FCC ID: YZY-HT205 WIRELESS POWERED SUBWOOFER SPEAKER

by: Paradigm Electronics Inc latest update: 2010-12-01 model: HT205

One grant has been issued under this FCC ID on 12/01/2010 (this is the only release in 2010 for this grantee). Public details available include manuals, frequency information, and internal & external photos. some products also feature user submitted or linked troubleshooting guides, instructions, warrantee terms, password defaults, & drivers.

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1	Users Manual 1	Users Manual	pdf	1.25 MiB	/ January 12 2010
1	Users Manual 2	Users Manual	pdf	1.66 MiB	/ January 12 2010
1		Cover Letter(s)	pdf		/ January 12 2010
1		External Photos	pdf		/ January 12 2010
1		Internal Photos	pdf		/ January 12 2010
1		Cover Letter(s)	pdf		/ January 12 2010
1		ID Label/Location Info	pdf		/ January 12 2010
1		RF Exposure Info	pdf		/ January 12 2010
1		Test Report	pdf		/ January 12 2010
1		Test Setup Photos	pdf		/ January 12 2010
1		Operational Description	pdf		/ January 12 2010

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Users Manual 1

Users Manual

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DO4946- v1.4 DO5303 Squeak 1.5 5.8GHz WHAM2 HT-201/202 Datasheet Digital Wireless Audio Modules GENERAL DESCRIPTION The HT-201/202 is a complete high-performance wireless home theatre audio solution, capable of transmitting a Left/Right surround audio channel pair for wireless rear speakers (HT-202), or a single Low Frequency Effects (LFE) channel to a wireless subwoofer (HT-201) across a robust 2.4 GHz radio frequency link. The HT series of Wireless Hi-Fidelity Audio Modules

(WHAM) are highly-integrated module packages utilizing the revolutionary XInC2 wireless processor. Elevens proprietary adaptive frequency hopping protocol uses a narrow footprint in the 2.4 GHz band allowing seamless co-existence with other devices and offering unparalleled Quality of Service. Each module typically requires two well ltered power supply rails for operation. A Digital power rail to supply the XInC2 processor and an RF power rail to supply the 2.4 GHz radio. HT audio modules accept, and output digital audio information in I2S format. Interfacing to the module is possible through standard two-wire I2C protocol, or through the built-

in XInC Programming Debug (XPD) port using XInC2s Serial Peripheral Interface (SPI). The HT audio module series comes pre-programmed with a standard software feature set that is built into the HT Standard Application Firmware, which includes bi-directional data control channels, low-power sleep modes, remote volume, mute control and automatic RF Mating. ORDERING INFORMATION Item Description Catalog #

TX HT-201: Audio Modules RX TX HT-202: Audio Modules RX HT-201: PB3 Evaluation Kit TX RX HT-202: PB3 Evaluation Kit TX RX WH4946 WH4947 WH4948 WH4949 EV4946 EV4947 EV4948 EV4949 48 kHz, 16-bit digital, Stereo/Mono audio transmission FEATURES Digital I2S Audio Input/Output Digital volume control, manual mute Auto mute (when signal lost) High Quality of Service (QoS) Walking Frequency Diversity (WFD) Elevens 2.4 GHz wireless at 1.536 Mbps proprietary adaptive frequency hopping protocol. Standard Application Firmware - Includes a complete set of built-in wireless audio software features and interface control functions. Optional HPX audio codec delivers CD-quality sound with ultra low THD+N across the entire audible band. 15m indoor range Up to 4 transmitters in specied range area Low latency; rmware selectable 20 64 ms Bi-Directional Data Channel Small form factor Compatible with FCC/ETSI regulations Two-wire Serial Data Interface DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 1 of 47 Copyright 2008 Eleven Engineering Inc. (all rights reserved) HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE TABLE OF CONTENTS List of Tables Characteristics and Specications Absolute Maximum Ratings Transmitter Operating Conditions Receiver Operating Conditions RF Characteristics and Behavior Pin Description Audio Characteristics Functional Description Wireless System Description Audio Compression Codec Modes of Operation Firmware Loading Advanced Features RF Mating RF Mating: Add-a-Node Bi-Directional Data Channels Volume Control Modes Audio Level Standby Supported Audio Devices Control Port Interface I2C Interface Register Description Standard Bi-Directional Data Link Extended Bi-Directional Data Link 3

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..................................................................................................... 46 Appendix A: Audio Characteristic Charts Appendix B: Channel Table Appendix C: PB3 Reference Design Schematics Right Angle Slot Mount Edge Mount Package Dimensions Mounting Methods Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 2 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE LIST OF TABLES Table 1 TX Absolute Maximum Ratings Table 2 RX Absolute Maximum Ratings Table 3 TX Operating Conditions Table 4 RX Operating Conditions Table 5 RF Characteristics Table 6 TX/RX Pinouts Table 7 Audio Characteristics Table 8 RF Centre Frequencies 4

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............................ List of Figures Figure 1 I2C Write Procedure Figure 2 I2C Read Procedure Figure 4 Package Dimensions Figure 5 Right Angle Slot Mount Figure 6 Edge Mount Figure 9 FFT of Idle Tones (Noise Floor) Figure 10 FFT of 997 Hz at -1 dB FS Figure 11 Frequency Response at -1 dB FS Figure 12 THD+N vs. Frequency (HPX/PB3) Figure 13 Channel Isolation at 0 dB FS Figure 14 PB3 Tx Reference Schematic Figure 15 PB3 RX Reference Schematic

................................ ............................... .............................. .......................... ........................................... .............. .................... .......... ......... ................. ................ ................ 16 17 37 38 39 40 41 42 43 44 46 47 Contacting Technical Support For all product questions and inquiries visit Eleven Engineerings online support page at www.ElevenEngineering.com/support/ or contact an Eleven Sales Representative. To nd one near you visit www.ElevenEngineering.com/

IMPORTANT NOTICE Eleven Engineering Incorporated (Eleven) makes no representations or warranties with respect to the accuracy, utility or completeness of the contents of this publication and reserves the right to make changes to specications and product descriptions at any time without notice. No license, express or implied, by estoppel or otherwise, to any patents or other intellectual property rights is granted by this document. Particular uses or applications may invalidate some of the specications and/or product descriptions contained herein. The customer is urged to perform its own engineering review before deciding on a particular application. Eleven assumes no liability whatsoever, and disclaims any warranty (express or implied), relating to sale and/or use of Eleven products. Eleven products are not designed for use in medical, life saving, or life sustaining applications. If this document is Advance, its contents describe a product that is under development and all specications are subject to change without notice. If this document is Preliminary, its contents are based on early testing and measurements, although typical data is representative of the product it is still subject to change without notice. If this document is Final, its contents are based on a characterized product and it is believed to be accurate at the time of publication. Final Datasheets supersede all previous versions. Information labeled as pertaining to WHAM2-D in this document is preliminary and subject to change without notice. XInC, XInC2, Squeak, HPX, MPX, WHAM2, WHAM2-D, WFD, XPD and their associated families and logos are trademarks of Eleven. Multiple patents and patents pending. Other logos, designs, titles or phrases may be trademarks of Eleven or other entities. Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 3 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 1 CHARACTERISTICS AND SPECIFICATIONS 1.1 ABSOLUTE MAXIMUM RATINGS All Min/Max characteristics and specications are guaranteed over the specied operating conditions. Typical performance characteristics and specications are derived from measurements taken at typical supply voltages. TA=25C. GND = 0 V, all voltages with respect to 0 V. Transmitter Parameter Symbol RFM Power Digital Power Digital Input Pin Absolute Maximum Input Voltage Operating Temperature Storage Temperature RFVCC VCC GPIOx, ID_DATA, ID_CLCK, / RESET, MISO0, MOSI, CS0 TA TS Value 3.6 3.63 3.63 50 90 Unit V V V C C Table 1 TX Absolute Maximum Ratings Receiver Parameter Symbol RFM Power Digital Power Digital Input Pin Absolute Maximum Input Voltage Operating Temperature Storage Temperature RFVCC VCC GPIOx, ID_DATA, ID_CLCK, / RESET, MISO0, MOSI, CS0 TA TS Value 3.6 3.63 3.63 50 90 Unit V V V C C Table 2 RX Absolute Maximum Ratings Note IO Inputs are not 5 V Tolerant. Note IO Inputs are not 5 V Tolerant. Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 4 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 1.2 TRANSMITTER OPERATING CONDITIONS Parameter POWER CONSUMPTION Digital Power Supply RF Power Supply Digital Current RF Current RF Current Duty Cycle Audio Level Standby Current LOGIC THRESHOLDS Input Low Voltage Threshold Input High Voltage Threshold Output Low Voltage Threshold Output High Voltage Threshold Input Leakage Current TEMPERATURE Operating Temperature Storage Temperature Standard Data Channel Tx I2C Interface Max Output Rate*

Tx Data Channel Latency**

Extended Data Channel Tx I2C Interface Max Output Rate*

Tx Data Channel Latency**

Min 3.0 3.0 2.0 2.4

-10 0

-20 Conditions VCC = 3.3 V VCC = 3.3 V Transmit Mode:

Receive Mode:

Average Draw VCC = 3.3 V VCC = 3.3 V VCC = 3.3 V VCC = 3.3 V VCC = 3.3 V All Power Ranges Tx to Rx Tx to Rx Tx to Rx Tx to Rx Table 3 TX Operating Conditions

*Data rates averaged over 10 seconds

**Latency dependent on number of retransmissions Typical Max Unit 3.3 3.3 53 130 92 8 50 1 1 11 30 6 3.6 3.6 0.8 0.4 10 60 90 V V mA mA

mA V V V V A C C kbps ms kbps ms Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 5 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 1.3 RECEIVER OPERATING CONDITIONS Parameter POWER CONSUMPTION Digital Power Supply RF Power Supply Digital Current RF Current RF Current Duty Cycle Sleep Mode Current Consumption LOGIC THRESHOLDS Input Low Voltage Threshold Input High Voltage Threshold Output Low Voltage Threshold Output High Voltage Threshold Input Leakage Current TEMPERATURE Operating Temperature Storage Temperature Standard Data Channel Rx I2C Interface Max Output Rate*

Rx Data Channel Latency**

Extended Data Channel Rx I2C Interface Max Output Rate*

Rx Data Channel Latency**

Min 3.0 3.0 2.0 2.4

-10 0

-20 Conditions VCC = 3.3 V VCC = 3.3 V Transmit Mode:

Receive Mode:

Average Draw VCC = 3.3 V VCC = 3.3 V VCC = 3.3 V VCC = 3.3 V VCC = 3.3 V All Power Ranges Rx to Rx Rx to Tx Rx to Tx Rx to Tx Table 4 RX Operating Conditions

*Data rates averaged over 10 seconds

**Latency dependent on number of retransmissions Typical Max Unit 3.3 3.3 42 65 4 96 30 1 1 6 3.6 7 3.6 3.6 0.8 0.4 10 60 90 V V mA mA

mA V V V V A C C kbps ms kbps ms Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 6 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 1.4 RF CHARACTERISTICS AND BEHAVIOR The HT Series audio module RF characteristics are described below paying special attention to include information pertinent to FCC and ETSI regulations. HT rmware operates by selecting a palette (or group) of random channels out of the total 38. Any channels with poor transmission rates are replaced with better channels from the remaining unused channels. The switching pattern from channel to channel is a random pattern. The table below describes some important aspects of the channel-hopping algorithm:

Conditions Parameter RF CHARACTERISTICS Transmission Method Raw Data Rate Channel Width Total Channels Hopping Channels RF Coexistence TX Output Power DETAILED BANDWIDTH CHARACTERISTICS Hopping Rate Frequency Dwell Time Audio TX: RF Transmit Time Audio RX: RF Transmit Time Frequency Range (Total) 20 dB Channel BW Distance to upper ISM band limit Distance to lower ISM band limit Distance to lower ISM band limit Antenna Impedance RF RANGE Indoor Range (Note 1) Open Field Range (Note 2) In Specied Radius Tx Node Per Each Rx Node FCC Test Method FCC Test Method ZAnt Min Typical Max Unit ARQ with Adaptive FHSS 14 2.40197

<2 20 16 187.5 5.333 4.594 0.219 78.057 1.94 3.476 1.967 50 1.536 38 4 18 2.48002 15 180 Mbps MHz Ch Ch sets dBm Hz ms ms ms GHz MHz MHz MHz MHz m m Notes:

1. Typical home/office environment (estimated) 2. Actual open eld line of sight testing results. Table 5 RF Characteristics Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 7 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 1.5 PIN DESCRIPTION Pin#

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Tx Pin Function RFVCC GND GND VCC

/RESET PB1 MISO0 MOSI0 SCK0 SDA SCL Bond0 LED Bond1 LED RF-Mate Vol. Down MCLK Vol. Up Mute LRCK ADC Reset GND SDIO0 BCLK GND

(no connect) Rx Pin Function RFVCC GND GND VCC

/RESET PB1 MISO0 MOSI0 SCK0 SDA SCL Mute LED Bond LED PC4 Mute MCLK Amp Disable Vol. Down LRCK Vol. Up Button GND SDIO0 BCLK GND

(no connect) Description RF Voltage Power Input RF Ground Digital Ground Digital Power Input Reset input (active low) SPI0 Chip Select (CS0) PB1 SPI0 Master Data Input MISO0, or GPIO port PG0 SPI0 Master Data Output MOSI0, or GPIO port PG1 SPI0 Clock output SCK0, or GPIO port PG2 Two Wire Serial Data Two Wire Serial Clock Bond0 / Mute LED Bond LED RF-Mate Push Button / GPIO PC4 Volume Down / Mute Push Button Master Clock Output Volume Up Push Button/ Amp Disable Pin Volume Down/ Mute Push Button Left-Right Clock (LRCK) ADC Reset Pin / Volume Up Push Button Ground Serial DASI Data input/output SDIO0 Serial DASI Bit Clock output BCLK Ground n/a Table 6 Tx/Rx Pinout Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 8 of 47 251HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 1.6 AUDIO CHARACTERISTICS Parameter Signal to Noise Ratio:

A-weighted Un-weighted Signal to Noise Ratio:

A-weighted Un-weighted Line THD+N, Left Channel Line THD+N, Right Channel Audio Bandwidth Pass Band Ripple Symbol SNR Conditions Left Channel, 997 Hz Right Channel, 997Hz SNR THD+N 997 Hz @ -1 dB FS THD+N 997 Hz @ -1 dB FS BW 10

@-1 dB FS

-1 dB FS 20 Hz - 20 kHz Table 7 Audio Characteristics Min Typical

>95

>92

>95

>92 Max 0.063 0.063 20000 0.2 Unit dB FS dB FS dB FS dB FS

Hz dB Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 9 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 2 FUNCTIONAL DESCRIPTION 2.1 WIRELESS SYSTEM DESCRIPTION Frequency Hopping Spread Spectrum (FHSS) A frequency hopping spread spectrum (FHSS) system works by hopping from one frequency channel to another in a known sequence out of a select group of channels. The HT system frequency hops between 20 channels. The group of 20 channels is selected out of a total of 38 hopping channels in the ISM band. If it is determined that one of the 20 hopping channels is found to be noisy or poor due to other RF interference, then a new channel is selected from the 18 unused channels (i.e. 38 - 20 = 18) and the one noisy channel is released to the unused group. This repeats whenever a noisy or poor channel is detected. The master dwells on a single hopping channel and transmits a data packet to the slave Rx. When the slave Rx receives a good data packet from a Tx, the Rx sends an acknowledgment back to the Tx. Once the slave Rx has responded to the master Tx, then both the Tx and Rx units each hop to the next frequency channel and the process is repeated. However, when the Rx receives a corrupted data packet from a Tx, the Rx transmits a resend request back to the Tx. The Tx responds by re-transmitting the last packet of audio data. In this way the Rx can maintain a high quality of service (QoS) by replacing bad audio data with good audio data before the data is decoded and output to the speaker. This technique is known as data buffering. A large data buffer size provides higher QoS than with a low buffer size, however a large data buffer size has higher system latency (i.e. up to 64 ms) compared to the latency of a small 20 ms buffer. If a Tx and Rx receive channel interference from another Tx-Rx system, or from other RF interference on the same hopping channel, then the Tx and Rx units have an opportunity to request for the data to be re-transmitted. This re-transmission scheme provides a time delay for the interfering Tx and Rx to change channels again before the re-transmission occurs. Thus a Tx-Rx audio data packet would have a higher probability to get successfully transmitted and received when a re-transmission occurs. FHSS frequency hopping allows multiple systems and other RF devices to coexist in the same area, since each system selects a different pseudo random group of 20 hopping channels. Also, each system hops from channel to channel in a different 20 channel sequence from other systems. This allows multiple systems to coexist with minimal channel contention and interruption from nearby RF interference. Indoor vs. Open Field Range Open Field range is experimentally determined in an outdoor environment with no obstructions between the transmitter unit and the receiver unit, no other RF devices in the area and no multipath-creating objects aside from the earth itself. Indoor range can only be estimated because it is dependent on the type of physical obstructions such as building materials, building construction, obstacles, human body obstacles, and the presence of other RF devices in the same area, all of which vary from location to location. Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 10 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 2.2 AUDIO COMPRESSION CODEC The HT wireless audio system is a digital audio system that operates at 1.536 Mbps of data transfer from the Tx unit to the Rx unit; therefore, the system must use data compression-decompression software to lower the amount of data to be transferred from the Tx unit to the Rx unit. The audio codec compresses the 16-bit digitally sampled data, sampled at 48 kSps (kilo-Samples-per-second) from the analog-to-digital converter, down to 5-bit digital data. This 5-bit data is then transmitted from the Tx unit to the Rx unit(s). When each Rx unit receives the 5-bit data, it decompresses the data from 5-bits back to 16-bits of digital-audio data. The Rx then uses the digital-to-

audio converter (DAC) to translate the 16-bit digital audio back to an analog audio signal. Disclosure Prevention/ Data Scrambling The disclosure of the original audio data stream from the wireless audio system is prevented by data scrambling. Data scrambling is achieved using a proprietary multi-predictor compression algorithm that has been developed by Eleven Engineering. Each audio sample is compressed using the multi-predictor codec algorithm before the Tx transmits it over the wireless link. Once the data is received at the Rx unit, each audio sample is decompressed, again using Eleven's multi-predictor codec algorithm. If the data stream is read by another device its data content is undecipherable. In addition, each customer is assigned a "License ID" number. Upon accepting the Software License Agreement, each customer agrees to incorporate their license ID number into their Tx and Rx rmware versions. Once the ID is imbedded in the rmware, then only Rx products with the customer's specic license ID can receive and decode the digitized audio. 2.3 MODES OF OPERATION There are several modes of operation for the HT Standard Application Firmware. Each mode is described in further detail in the paragraphs below. For more information on how to congure the HT module into each mode, refer to Section 4.2. The modes of operation include:

- Reset

- Module Standby

- Normal Bond Search

- Sleep

- Bonded

- Bonded & looking for additional receivers

- RF Mating

- Add-A-Node Reset:

All of the Digital Logic in the HT module can be held in a reset state by using the Reset pin on the Edge connector. In this state all of the Digital I/O on the HT module will be set to inputs. The HT module can be placed into standby mode by setting the standby bit of the Command0 register accessed by the 2 wire serial interface. In standby mode the module is in a low power state. The RF module is turned off so no bond can be established with another device, but commands on the 2 wire serial interface are received. In this state, the audio clocks are disabled. Normal Bond Search:

This is the normal mode that the module uses to acquire a link (bond) with another HT device. In this mode the Tx will send out poll requests looking for responses from an Rx. The Rx listens for Tx poll requests before it transmits a response. Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 11 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE Sleep:

On the Rx, this mode is entered after a congurable amount of time has passed with no bond to a Tx. In this mode, the Rx will still attempt to bond to a Tx, but will alternate between bond search and module standby to conserve power. On the Tx this mode can be entered by using the audio level detection algorithm. (See the noise gate conguration in the 2 wire serial interface section). If the audio level is below a certain threshold for a congurable amount of time, then sleep mode can be entered. In this mode the normal bond search mode is entered only after the audio level goes above the congurable threshold Bonded:

This is normal operation mode where the Tx and Rx are bonded and audio is transferred across the link. RF Mating:

This mode is used to RF Mate a transmitter to a receiver. (Refer to Section 4.2) Add-A-Node:

This mode is similar to RF Mating, however the existing Mating ID of the system will be retained and copied to the new node added to the system. (Refer to Section 3.3 for details). 2.4 FIRMWARE LOADING The Standard Application Firmware package will allow the developer to take full advantage of many useful features that have already been built into the HT Application, and to ensure easier integration into the nal product motherboards. The process below will describe how to download and update rmware to the HT audio module. XPD Programming Module Eleven strongly recommends for customers to include pins 3, 4, 5, 6, 7, 8 and 9 of the HT module edge connector in their design layout, and connect these pins to an 8x1x0.1" header. This 8x1x0.1" connector is the XInC Programming Debug (XPD) port used to download rmware hex les to the modules. To do this, an XPD Programming Module, at ribbon cable, programming cable, RS232 cable, and the XInC Development Environment (XDE) program are required. During rmware development, this XPD port is required to download rmware into the Tx and Rx modules. For mass production, customers can reduce part costs by not populating the 8x1x0.1" programming connector if it is not required. Customers can purchase an XPD Programming Module and ribbon cables from Eleven Engineering, or build their own based on the Schematic, BOM, Assembly Drawing, and Gerber les, which are all available from Eleven without charge. The XDE download program is also available from Elevens website without charge. Downloading Firmware using the XinC2 Development Environment Download the XInC Development Environment (XDE) program from Elevens website. The XPD program is used to download hex les to the HT modules. Save and run the XDE.exe le. An XPD Programming module is required. Follow this rmware le download procedure:

(1) Connect the at ribbon cable to the XPD Programmer Module on Port 3. The black line on the ribbon cable

(2) Connect the ribbon cable to the XPD port on the Tx. The black line must be positioned at pin 1.

(3) Run the XDE program, select the FILE heading, and open the Master .hex le.

(4) Click Download in the menu. Select the correct computer serial COM port and click download. Click the reset button on the Tx unit (or turn the power to the Tx Off, then On again) and the program will begin to download. must be positioned at pin 1 of Port 3. Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 12 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE

(5) Wait 5 seconds after the download has been completed for the EEPROM to be fully programmed. This is so that the XInC2 processor has enough time to completely transfer the rmware into the EEPROM from the XPD module. (Note: This is an important step, dont skip it!) must be positioned at pin 1 of Port 3. is the 3.3V pin.

(6) Repeat this procedure for the Rx, except using the Slave .hex le. Downloading Firmware using the XinC Loader The XInC Loader program is another utility used to download hex les and parameters to the HT modules. An XPD Programming module is required. Follow the le download procedure outlined below:

(1) Connect the at ribbon cable to the XPD Programmer Module on Port 3. The black line on the ribbon cable

(2) Connect the ribbon cable to the XPD port on the Tx module. The black line must be positioned at pin 1 which

(3) Open XinCLoader.exe.

(4) Select the appropriate COM port from the drop down menu.

(5) Ensure the checkboxes Unlock and Erase are checked.

(6) Check the Load Firmware check box and Drag and Drop, or Browse for the Firmware hex le you wish to

(7) If loading Parameter pages, Check the Load Squeak Parameter Page or Load Audio Parameter Page. Drag

(8) Click Start and press the reset button on the unit (or turn the power off, then on). Then download will begin.

(9) Repeat this procedure for the Rx, using the Slave .hex le. load. and Drop, or Browse to the appropriate Parameter Page hex les you with to Load Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 13 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 3 ADVANCED FEATURES Standard functions in Application Firmware have been developed to accommodate a variety of different design options. A summary of some useful software features are outlined below:

3.1 RF MATING Following power on, the Tx and Rx nodes search for each other and then establish a link (called a Bond). Mating occurs when a unique number is used to distinguish all of the Tx and Rx nodes in a system. Bonding requires that the Tx and Rx units have the same Mating ID (exact match). Matingis typically done only once in the whole life of the system. Usually, it is done in the plant before the nal product goes into packaging. However, the HT Standard Application Firmware features an automatic Mating procedure called RF Mating that can be performed if necessary. RF Mating is the procedure of matching the 16-bit ID of the transmit node (Tx) to 1 or more receive nodes (Rx) using a single button on the Tx. After an Rx node has been RF mated it will not connect to any other Tx until it sees a Tx node in RF mating mode. Currently, the RF system supports up to 4 Rx nodes. The Node topology of the system is congured at the same time as the RF Mating procedure. When rst power on, the Tx node will fetch its 16 bit Mating ID from the EEPROM on the module and use this value until the RF Mating button has been pressed for more than 3 seconds or the RF Mating has been initiated using the 2 wire interface. When RF Mating has been initiated a 16 bit random number is generated and used for the new Mating ID. This Mating ID is stored in the EEPROM only if a connection is established with an RX node. If the RF Mating procedure times out without Mating to any RX nodes it will terminate RF Mating mode and revert back to the previous Mating ID. The number of Rx nodes that RF Mate to the Tx will dene the new topology after the RF Mating has timed out or completed. The operating procedure is dened below:

1. Turn off Rx devices 2. Turn on Tx device. Tx will start to look for an RX device with the same Mating ID 3. Initiate RF Mating using one of two methods:

Press the RF Mating Button for greater then 3 seconds Set the RF Mating Bit using the 2 wire interface. The Bond0 Led on the TX will begin to ash once RF Mating has begun 4. Power on Rx. The Rx device will begin a cycle of looking for a Tx with its current Mating ID for 3 seconds and then switch to looking for any Tx in RF Mating Mode for 3 seconds. The Rx device will continue this cycle indenitely until it bonds with a Tx with the same Mating ID or it RF Mates to a new Tx. 5. The RF Mating procedure will terminate if no Rx node mates before the congured timeout. The Tx will use the original 16 bit Mating ID and will enter normal bond search mode. 6. When the RF Mating procedure times out after at least one Rx node has RF Mated, the number of Rx nodes bonded will dene the Node topology until the RF Mating algorithm is repeated. 3.2 RF MATING: ADD-A-NODE This RF mating mode is triggered by either a quick press of the RF mate button or by setting bit 4 in register 0x1E

(Refer to Section 4.2 for more information). In this mode the mating ID will not be changed and a normal RF Mate operation will be triggered. After the slave bonds up the node topology will be incremented up to the Max Nodes

(reg 0x02) setting and the connection will be reset. Using this mode any number of slaves may be added to a system, only the number of slaves specied by the node topology (reg 0x02) may be bonded at one time. The operating procedure is dened below:

1. Press the RF mate button for less than 3 seconds 2. Cycle the power on the Rx Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 14 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 3.3 BI-DIRECTIONAL DATA CHANNELS HT Series Audio Modules are able to transfer non-audio user data over two bi-directional data channels. The Standard Data Channel has a data transfer rate of 1 kbps maximum from the Tx to Rx and 1 kbps from the Rx to the Tx. The Standard Data Channel can be used to pass control information or digital data between the Tx and Rx units, such as commands for Play, Pause, Stop, Fast Forward, Rewind, Volume, Mute, disk and track information, remote power off, or any type of data the designer wishes to transfer between devices. In the event that a higher data rate is required, an Extended Data Channel is also available to transmit a larger amount of data from the Tx to one Rx at a rate of 30 kbps from Tx to Rx and 6 kbps from Rx to Tx. 3.4 VOLUME CONTROL MODES HT audio modules are able to function in two different volume control modes depending on the nature of the product and the requirements of the designer. When set to Global Volume Mode, an absolute system wide volume on the master is stored. Upon bond up, the master sends the current system volume to a newly bonded slave. A change on the master is sent to all slaves and a change from a slave is sent to the master where it is distributed to all other slaves. When congured for Local Volume Mode, each slave stores it's own absolute volume level. The Master will not send changes across the link and each slave will ignore any incoming volume changes received from the system. 3.5 AUDIO LEVEL STANDBY HT Series audio modules have sleep mode functionality built into Standard Application Firmware. Once in sleep mode, the modules will enter a low power mode when not active. On the Tx, this mode is known as audio level standby. In this mode, the Tx can be congured to enter a low powered sleep state after a congureable amount of time that the audio signal is below a specied threshold. Once in sleep mode, both the Tx and Rx will enter a low powered sleep state until the audio signal at the transmitters audio inputs goes above this threshold. The Rx also has a separate low power sleep mode that can be entered given a certain amount of time that has passed without bond to a Tx. In this mode, the Rx will wake up periodically to look for its mated Tx. If none are found, it will return to the low power sleep state. Once a Tx is found, then the Rx will wake up fully and operate normally. 3.6 SUPPORTED AUDIO DEVICES HT audio modules support a wide variety of industry standard audio devices for easy compatibility. System rmware can be congured to initiate the devices to a default state, eliminating the need for an external micro-

controller. Eleven recommends choosing an external audio device from the list below to ensure maximum compatibility with the HT audio module. Device Name PCM1803 PCM1808 CS5341 CS8421 CS4341 CS4L51 PCM1770 STA308 TAS5010/TAS5012 TAS5086 TAS5504 Type ADC ADC ADC SRC DAC DAC/Class Amp DAC/HP Amp Audio Processor Audio Processor Audio Processor Audio Processor Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 15 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 4 CONTROL PORT INTERFACE HT wireless audio modules feature a built in 2 wire serial interface port. This interface serves three main purposes:

1. HT Parameter Conguration 2. Bi-Directional data link interface 3. Control of external devices such as ADC,DAC, and other devices. The rst is to provide a conveient method for external devices to congure HT system parameters. Parameter conguration using I2C is not a requirement for operation but provides benets for developers. Examples of the parameters that can be congured are Mating ID, number of receiver nodes, audio mode for each slave (stereo, mono), latency, and volume. (Refer to Section 4.2 for a list of control registers) The second purpose is for external devices to access the bi-directional data link that is provided by the HT RF Link protocol in addition to the audio link. (Refer to Section 4.3 for a description of the data channel registers) The third purpose is to allow the HT System to congure external audio devices or other types of devices such as LCDs, etc. (Refer to Section 4.3 ) In Slave Mode, the communication follows Standard I2C protocol. See the I2C-Bus Specication Version 2.1 for more information on the standard read and write protocol (also described below). The I2C slave address can be set to any 7-bit value. The address can only be changed using the XPD interface. The default 7-bit slave address of the HT system is 0x12. This slave address is fully congurable to ensure that an address collision can be easily avoided in systems where the bus has many devices on it. The I2C address can be programmed using the same utilities that the customer would use to set up their default parameters. 4.1 I2C INTERFACE HT control registers can be congured via the I2C Two-Wire serial interface, which consists of a control data line

(SDA) and a serial control clock (SCL). The procedures outlined below describe the operation of writing to, or reading from the HT Control registers. I2C Write 1) Initiate a START condition on the I2C bus. 2) Write the HT I2C Slave address byte (0x12 by default). The 8th bit of the address byte is the R/W bit, set low. 3) Wait for an acknowledge (ACK), then write the control register address to be written. 4) Wait for an acknowledge (ACK), then write the desired data to the specied register. 5) Repeat the previous step until all the desired registers are written. 6) Initiate a STOP condition to the bus. Figure 1 I2C Write Procedure Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 16 of 47 1234101000000SCLSDASTARTHT Slave Address (0x12)ACKInternal Register AddressACKA0A1A2A3R/WA4A5A6A71234Write Register DataACKD0D1D2D3D4D5D6D7STOP5678956789123456789HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE I2C Read 1) Initiate a START condition to the I2C bus. 2) Write the HT I2C Slave address byte (0x12 by default). The 8th bit of the address byte is the R/W bit, set low. 3) Wait for an acknowledge (ACK), then write to the control register address to be read. 4) Initiate a Repeated START condition to the I2C bus. 5) Write the HT I2C Slave address byte. The 8th bit of the address byte is the R/W bit, set high (0x13). 6) Wait for an acknowledge (ACK), then read data from the specied register. 7) Repeat the previous step until all the desired registers are read. 8) Initiate a STOP condition to the bus. Figure 2 I2C Read Procedure Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 17 of 47 1234101000000SCLSDASlave Address (0x12)ACKInternal Register AddressACKA0A1A2A3R/WA4A5A6A71234Read Register DataD0D1D2D3D4D5D6D7STOP11100000Slave Address (0x13 [R/W high])ACKR/WSTARTSTOP567895678912340SCL1234567895678SDASTARTNA9HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 4.2 REGISTER DESCRIPTION A description of the HT control registers available for conguration are outlined below. All defaults are 0 unless otherwise specied. Mating ID Upper Byte (Address: 0x00) Size: 8 bit Access: R/W 7 6 5 4 3 2 1 0 Mating ID Upper Byte Function:

Bit 7..0 - Mating ID - Upper Byte (Master/Slave):

Manually Congure the Lower Byte of the Mating ID. In order for the Master and Slave modules to establish a connection, the Mating IDs on both must be identical. Mating ID Lower Byte (Address: 0x01) Size: 8 bit Access: R/W 7 6 5 4 3 2 1 0 Mating ID Lower Byte Function:

Bit 7..0 - Mating ID - Lower Byte (Master/Slave):

Manually Congure the Lower Byte of the Mating ID. In order for the Master and Slave modules to establish a connection, the Mating IDs on both must be identical. Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 18 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE RF Conguration (Address: 0x02) Size: 8 bit Access: R/W 7

5 4 3 2 Max RX Nodes Mate Mode 1 0 Number of Slaves 7

Bit 5..4 - Max Nodes 1 Rx Node 2 Rx Nodes 3 Rx Nodes 4 Rx Nodes 5 0 0 1 1 4 0 1 0 1 3 Bit 3..2 - Mating Mode Bit 1..0 - Number of Slaves RF Mating Random ID RF Mating Static ID 0 0 0 0 2 1 0 0 Static ID 1 x 1 1 1 0 1 Rx Node 2 Rx Nodes 3 Rx Nodes 4 Rx Nodes 1 0 1 Function:

Bit 1..0 - Number of Slaves (Master Only):

Bit 3..2 - Mating Mode (Master/Slave):

Bit 5..4 - Max Nodes (Master Only):

The number of RX nodes the TX will search for upon power up. If the number of unbonded RX nodes in the area is higher than the value set in Number of Slaves, the TX will bond to the rst ones it sees until the number is reached, ignoring the remainder. Species if the TX/RX will acquire its Mating ID automatically through the RF Mating process, or by manually by conguring matching Static IDs in the Mating ID control registers. RF Mating can be congured to automatically generate a new Random 16-bit Mating ID when initiated (0,0), or acquire a new slave with the existing Mating ID currently programmed in the transmitter (1,0) Max Nodes is used during RF Mating Mode. This setting is used by the TX node to determine the maximum number of RX devices to attempt to RF Mate with. Once RF Mating has been completed, the number of Slaves that the Master has successfully Mated with re-denes the new overall system topology and becomes the new value of Number of Slaves for normal operation. Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 19 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE Buffer Size (Address: 0x03) Size: 8 bit Access: R/W 7

5 4 3 2 1 0 Buffer Size Function:

Buffer Size (Master Only):

This register dens the size of the Audio Buffer. A larger audio buffer allows more time for packet retransmissions, but increases the latancy between the TX and RX nodes. Latency = 6.248 ms + (1.33 ms * Buffer Size) Valid range is 6 to 42 (0x2A). Default is 10 (0xA) = 20 ms The 6.248 ms xed latency is broken up as follows:

5.330 ms = Audio Compression + Audio Decompression 0.918 ms = Packetization + Framing Bond Status (Address: 0x04) Size: 8 bit Access: R 7 6 S3 Bond Bond

5 4 3 2 1 0 S2 Bond S1 Bond S0 Bond Bit 5..4 - Slot3 Bond Stat Bit 5..4 - Slot2 Bond Stat Bit 3..2 - Slot1 Bond Stat Bit 3..2 - Slot0 Bond Stat 5 4 Nothing Bonded 0 0 Left Channel Audio Right Channel Audio 1 0 1 0 Stereo Audio 1 1 3 2 Nothing Bonded 0 0 Left Channel Audio 0 Right Channel Audio 1 x 1 Stereo Audio 1 1 1 0 Nothing Bonded 0 0 Left Channel Audio Right Channel Audio 0 1 1 0 Stereo Audio 1 1 7 6 Nothing Bonded 0 0 Left Channel Audio Right Channel Audio 0 1 1 0 Stereo Audio 1 1 Function:

Bond Status (Master/Slave):

The Bond Status register can be read at any time to determine the current connection status of each node in the system. On the Master, 2 bits are allocated for each of the 4 possible Slave connection slots which can be read to determine whether or not there is a connection on a specic slot, and the properties of that connection (stereo, left,right). On the Slave side, the bond state is reported on bit 7 of the Bond Status control register. Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 20 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE Bit 7- Slave Bond Stat. 7 1 0 Bonded Unbonded 6

5 4 3 2 1 0

General Cong 0 (Address: 0x06) Size: 8 bit Access: R/W 7

5 Stby Mute 3 4 Stby Disable Sleep Disable 2 Mute Invert 1 Int 0

Function:

Bit 0 - Reserved Bit 1 - Interrupt Enable (Master/Slave):

Bit 2 - Mute Invert (Slave Only):

Bit 3 - Mute Invert (Slave Only):

Bit 4 - Audio Level Sleep Disable (Master Only):

Bit 5 - Audio Sleep Mute Only (Master Only):

Bit 6 - Reserved Bit 7 - Reserved If this bit is set then squeak will generate a GPIO interrupt to indicate new data from the RF has been received. If this bit is clear then the IO pin is left unused. RF mating must be disabled to use this feature. If this bit is clear then the Mute/AmpDisable pin (Pin 17) will be an active low output. If this bit is set then the Mute/AmpDisable pin will be an active high output. On the Slave this feature that will de-assert the Mute/AmpDisable pin after a bond is lost (Reg 0x08) and then put the Slave to sleep

(Reg 0x09). If this bit is clear then sleep mode is enabled, if this bit is set then sleep mode is disabled. This feature will put the system to sleep when no audio is present for an amount of time set in the Audio Level Attack Time register (Reg 0x16 and 0x17). The threshold for detecting audio presence is set in the Audio Level Threshold 0 register (Reg 0x12 and 0x13). If this bit is clear then the audio level sleep feature will sleep the system when the timeout is reached. If this bit is set then the system will remain bonded when the audio level sleep timeout is reached and the slave will be muted. Mute/Amp Disable Time Cong (Address: 0x08) Size: 8 bit Access: R/W 7 6 5 4 3 2 1 0 Mute Configuration Bit 7..0 Mute/Amp Disable Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 21 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE Function:

Mute/Amp Disable (Slave Only):

This is used to congure the delay after a bond is lost before the Mute/AmpDisable pin is asserted. Writing 0 will disable this feature. This value must be set lower than the Sleep time in Register 0x09 for proper operation. Time = Mute Time * 1 second. Default = 0 (disabled). Sleep Time Cong (Address: 0x09) Size: 8 bit Access: R/W 7 6 5 4 3 2 1 0 Sleep Time Configuration Bit 7..0 Sleep Time Config Function:

Sleep Time Cong (Slave Only):

This is used to configure the time until the module enters sleep mode after no bond has been established. Writing 0 will disable this feature. Time = Sleep Time * 1 second. Default = 0 (disabled). RF Mating Timeout (Address: 0x0A) Size: 8 bit Access: R/W 7 6 5 4 3 2 1 0 RF Mating Timeout Bit 7..0 RF Mating Timeout Function:

RF Mating Timeout (Master Only):

This is used to configure the timeout for the RF Mating algorithm. Time = RF Mating Timeout * 1 second. Default = 60. Note: 0 is invalid and will restore value to default. Audio Cong (Address: 0x0E) Size: 8 bit Access: R/W 7

2 3 4 Move Buttons Volume Mode 1 0 Audio Mode Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 22 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 7 6

Bit 4- Move Buttons Default 4 5 Modied 0 1 Bit 3..2 - Volume Mode Bit 1..0 - Audio Mode 3 2 Global Mode 0 0 Local Mode 1 0 1 0 Stereo Audio 0 0 Left Channel Audio Right Channel Audio 0 1 1 0 Function:

Bit 1..0 - Audio Mode (Slave Only):

Bit 3..2 - Volume Mode (Slave Only):

Can be used to configure each slave to output two channel stereo, Left Channel only, or Right channel only. When set to Left/Right Channel only, both Left and Right channels will output the channel of audio specified in Audio Mode Configures the Volume behavior used by each Slave. Global Volume Mode - An absolute system wide volume is stored by the master. On bond up the master sends the current system volume to the newly bonded slave. A change on the master is sent to all slaves and a change from a slave is sent to the master where it is distributed to all other slaves. Local Volume Mode - Each slave stores it's own absolute volume. It does not send changes across the link and ignores any incoming volume changes from the system. Bit 3..2 - Move Volume Buttons (Slave Only):

If this bit is clear then the volume buttons are in the default locations; Vol- = pin 18, Vol+ = pin 20. If this bit is set then the volume buttons replace the I2C Int and Mute Button; Vol- = PC4 (pin 14), Vol+ = PC5 (pin 15). This will allow volume control for the standard digital module. (currently this feature is not functional) Left Channel Audio Volume (Address: 0x10) Size: 8 bit Access: R/W 7 6 5 4 3 2 1 0 Mute DAC Attenuation Function:

Bit 6..0 - DAC Attenuation (Master/Slave):

Bit 6..0 - Mute (Master/Slave):

Set this bit to mute the DAC. Attenuation setting written to the DAC. Valid range is 0 to 70. Max volume = 0 (0dB of attenuation); Min volume = 70 (70dB of attenuation). On the Slave the Volume Mode must be set to Global (0) in order for the volume register on the Master to operate. Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 23 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE Right Channel Audio Volume (Address: 0x11) Size: 8 bit Access: R/W 6 5 7 Mute 3 2 4 DAC Attenuation 1 0 Attenuation setting written to the DAC. Valid range is 0 to 70. Max volume = 0 (0dB of attenuation); Min volume = 70 (70dB of attenuation). On the Slave the Volume Mode must be set to Global (0) in order for the volume register on the Master to operate. Function:

Bit 6..0 - DAC Attenuation (Master/Slave):

Bit 6..0 - Mute (Master/Slave):

Audio Level Threshold 0 - Lower Byte (Address: 0x12) Size: 8 bit Access: R/W Set this bit to mute the DAC. 7 6 5 4 3 2 1 0 Audio Level Thresh0 - Lower Byte Bit 7..0 - Audio Level Threshold 0 - Lower Byte Audio Level Threshold 0 - Upper Byte (Address: 0x13) Size: 8 bit Access: R/W 7 6 5 4 3 2 1 0 Audio Level Thresh0 - Upper Byte Bit 7..0 Audio Level Threshold 0 - Upper Byte Function:

Audio Level Threshold (Master Only):

This threshold is used for the audio level sleep feature When the Audio Level Standby is enabled, this is the threshold level that will trigger the TX to awake from sleep and begin behaving normally. and Default = 15 (0xF) Audio Level Attack Time 0 - Lower Byte (Address: 0x16) Size: 8 bit Access: R/W 7 6 5 4 3 2 1 0 Audio Level Thresh0 - Upper Byte Bit 7..0 Audio Level Threshold 0 - Upper Byte Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 24 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE Function:

Audio Level Threshold (Master Only):

Function:

Bit 0 - Reset (Master/Slave):

Bit 1 - Standby (Master/Slave):

Bit 2 - Clear Data (Master/Slave):

Bit 3 - RF Mate (Master Only):

Bit 4 - Add Single Node (Master Only):

Bit 5 - Audio Sleep Mute Only (Master Only):

Bit 6 - Reserved Bit 7 - Reserved 5 Audio Standby 3 4 2 Add Node RF Mate Clear Data 0 1 StdBy Reset Setting this bit will trigger a hard reset of the local device Set this bit to put the device into a standby state. Clear this bit to bring the device back out of standby. While in standby the I2C bus is active in standby mode. Any changes made to registers during standby mode will be implemented on exiting standby with the exception of the Command0 register, where Reset and Standby will be executed. Setting this bit will clear all stored register data and reset it to default values. Clearing data will be followed by a reset of the unit. Setting this bit will trigger a RFmate operation as described in section 0900. The number of slave connections desired should be set up in the RF Config register before initiating a RFmate operation. Clear this bit cancel the RFmate operation. Setting this bit will trigger a RFmate add single node operation as described in section 0900 This is an indicator bit only. If this bit is set then the system has entered standby due to an absence of audio for the time indicated in Audio Level Threshold 0 (reg 0x12 and 0x13). Note that to save code space this bit is not refreshed if overwritten. Actions in this register will trigger an exit from the standby state. Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 25 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE 4.3 STANDARD BI-DIRECTIONAL DATA LINK The Bi-directional Data Link interface will allow for the transmission of non-audio user data across the wireless link from a Tx to an Rx, or from an Rx to a Tx. The procedure outlined below demonstrates the how to send information from a Tx module to an Rx module via the I2C interface. Procedure:

On the Tx:

Connect to the I2C pins on the TX. 1. Write to Outgoing Data Channel Data Register (Address 0x8C)

-This is the data we want to send over the link (1 byte in this case, but can be as high as 46 bytes). We will write a value of 0xAA to this register that will sent to the other side 2. Write to Outgoing Data Channel Control0 Register (Address 0x8B)

-Write a value of 0x11. This will address our data to be sent to the slave bonded on Slot0. This will also set the New Data bit which will trigger the new data to be sent. When the transfer is complete, the ACK bit will be set in this register. On the Rx:

Connect to the I2C pins on the Rx. 1. Read from Incoming Data Channel Data Register(Address 0x8E). Should get a value of 0xAA that was sent from the Tx. TX Standard Outgoing Data Channel Standard Outgoing Data Control (Address: 0x8B) Size: 8 bit Access: R/W 7 S3 6 S2 5 S1 4 S0 3 2

# of Resends 1 ACK 0 NEW Function:

Set this bit to indicate that new data is ready to be sent. This bit is cleared to indicate a finished transfer This bit is set when the transfer is complete if an ACK was received from all addressed slaves. If this bit is clear when the transfer finished then one or more of the addressed slaves did not report an ACK. This indicates the number of times that squeak will try to resend the data Bit 0 New Data Bit Bit 1 - ACK Bit 2..3 Number of resends Bit 4 S0 Bit 5 S1 Bit 6 S2 Bit 7 S3 Set this bit to address the slave connected on slot 0 Set this bit to address the slave connected on slot 1 Set this bit to address the slave connected on slot 2 Set this bit to address the slave connected on slot 3 Copyright 2008 Eleven Engineering Inc. (all rights reserved) DO4946 - HT-201/202 Datasheet (rev. 1.4) 2008-12-20 Page 26 of 47 HT HT 201/202 DATASHEET - DIGITAL WIRELESS AUDIO MODULE Standard Outgoing Data Lower Byte (Address: 0x8C) Size: 8 bit Access: R/W 7 6 5 4 3 2 1 0 Lower Byte of Data Function:

Bit 0..7 Lower byte of data This is the lower byte, bits 0..7, of the data to be sent Standard Outgoing Data Lower Byte (Address: 0x8D) Size: 8 bit Access: R/W 7