FCC ID: YMX-ATS2853 Bluetooth Module

ATS2853 Bluetooth Module With ANT SPEC XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO., LTD. ATS2853BluetoothModuleWithANT SPEC Latest Version0.2 2023-11-27 ATS2853 Bluetooth Module With ANT SPEC List of Contents Features .................................................................................................................................... 1 Application Diagram ............................................................................................................ 2 Specifications ..........................................................................................................................3 Electrical Characteristics ...................................................................................................... 4 AUDIO Features ..................................................................................................................... 5 RF Characteristics .................................................................................................................. 8 Module Pin definitions ....................................................................................................... 11 Pin Configurations ............................................................................................................... 11 Module Package Information .......................................................................................... 14 Power-on sequence ............................................................................................................ 14 Recommended keepout area information ................................................................... 15 PCB antenna radiation pattern ........................................................................................ 17 Soldering recommendations ............................................................................................ 18 Version 0.2 Page 1 All rights reserved. ATS2853 Bluetooth Module With ANT SPEC 3COM4 COM , maximum 9SEG ATS2853 BT Module With ANT Bluetooth Audio Solution Wireless Audio Applications MMC/SD Card Audio Playback Bluetooth car audio unit Sound Bar Bluetooth V5.3 Features 32bit RISC processor Core, up to240MHz Internal 203KB RAM for data and program storage Internal 2MByte Nor flash Support 24MHz OSC with on-chip PLL Internal 32KHz RC oscillator 8-channel ordinary DMA, support for transmission in burst 8 mode Support Bluetooth V5.3, compatible with Bluetooth V5.0/4.2/4.2 LE/4.0/2.1 + EDR system Compatible with AVRCP Profile V1.6 Compatible with A2DP Profile V1.3 Compatible with HFP Profile V1.7 Built-in stereo 24bit sigma-delta DAC DAC supports sample rate of 8k/11.025k

/12k/16k/22.05k/24k/32k/44.1k/48k/88.2k/96 kHz Built-in stereo 20mW PA for headphone Built-in stereo 24bit sigma-delta ADC ADC supports sample rate of 8k/11.025k

/12k/16k/22.05k/24k/32k/44.1k/48k/88.2k/96 kHz Support 3 pairs input 0/1/2; each pair can be formed as mix or differential input. Support 2 DMIC input I2S TX&RX support master and slave mode separately, and support sample rate of 192k/96k/48k/44.1k/32k/24k/22.05k/16k/12k

/11.025k/8k Support SPDIF TX , SPDIF RX and CEC Rich Interfaces support:

SD,MMC/eMMC,USB2.0FS, 2xUART, 2xTWI, 1xSPI, IR RX, 9xPWM, support LCD with 8bit CPU interface, 1/3Bias, SEG_LCD Driver,7/8pin LED 24 Programmable GPIOs, and 10 analog IOs can also configure as GPIOs. PCB Dimension:

L270.1W140.1H25+0.1 mm Applications Wireless Audio Application MMC/SD Card Audio Playback Bluetooth car audio unit Sound Bar Version 0.2 Page 2 ATS2853 Bluetooth Module With ANT SPEC Application Diagram Specifications Operating Frequency Band 2.4GHz ~ 2.48GHz unlicensed ISM band Bluetooth Specification V5.3 Bluetooth Protocol A2DP,AVRCP,HFP Output Power Class Operating Voltage Class 1 Core :1.2V, IO:3.1V, BAT:3.4V~4.3V Operating temperate range

-20 ~ 70 External Interface UART,SPI,TWI,I2S TX/RX,IR,SD Card, USB,DMIC,SPDIF TX/RX Version 0.2 Page 3 ATS2853 Bluetooth Module With ANT SPEC Electrical Characteristics Absolute Maximum Ratings Parameter Temperature Symbol Storage temperature (Tstg) ESD Stress voltage VESD (Human body model) VCC/AVCC/SVCC Supply Voltage Input Voltage VD15 BAT 3.3V IO ONOFF Min

-55 4000 2.7 1.0 3 2.7

Max

+150

3.6 1.7 5 VCC+0.2 5 Unit C V V V V V V Recommended Power Supply Supply Voltage BAT (Li) VCC/SVCC AVCC VD15 Min 3.3 3.0 2.9 1.2 Typ 3.8 3.1 2.95 1.5 Max 4.5 3.6 3.25 1.7 Unit V V V V Regulators Maximum Output Current Block Name Output Voltage Load Capacity VCC AVCC SVCC 3.1V 2.95V 3.1V 300mA 40mA 100mA Note: The output voltages are precisely within 2%. Version 0.2 Page 4 ATS2853 Bluetooth Module With ANT SPEC AUDIO Features Test Condition: Power BAT=3.8V, Analog audio output AOUTL/R, Load = 10K ohm, BW=20Hz ~ 20 KHz, Test equipment: AP2722. DAC/ADC audio output performance chart:

Line in Input Mode:

Line in Input player: 0KHz FFT 20Hz ~ 20 KHz Version 0.2 Page 5 ATS2853 Bluetooth Module With ANT SPEC Line in Input Player: Frequency Response 20Hz ~ 20 KHz Line in Input player: THD+N (A-Weighting) 20Hz ~ 20 KHz Version 0.2 Page 6 ATS2853 Bluetooth Module With ANT SPEC Bluetooth Player Music Mode:

Bluetooth A2DP Player: 0Hz FFT 20Hz ~ 20 KHz Bluetooth A2DP Player: Frequency Response 20Hz ~ 20 KHz Version 0.2 Page 7 ATS2853 Bluetooth Module With ANT SPEC Bluetooth A2DP Player: THD+N 20Hz ~ 20 KHz RF Characteristics BT Protocols A2DP/AVRCP/HFP Power Consumption A2DP HFP Sniff Standby NOTE1:Vbat = 3.8V,10K load, related to SDK. NOTE2:Vbat = 3.8V,BLE broadcast is on. NOTE3:Vbat = 3.8V. A2DP1.3.2 AVRCP1.6.2 HFP1.7 Typical : 18.1mA NOTE1 Typical : 20.8mA NOTE1 Typical : 2.1mA NOTE2 Typical : 20uA NOTE3 Version 0.2 Page 8 ATS2853 Bluetooth Module With ANT SPEC Basic Data Rate of Transmitter Parameter Condition Min. Typ. Max. Unit Maximum RF Transmit Power RF Power Control Range 20dB Bandwidth for Modulated Carrier Adjacent Channel Transmit

+2 MHz

-2 MHz

+3 MHz

-3 MHz Frequency Deviation f2max Maximum f1avg Maximum f1avg/f2avg Initial Carrier Frequency Tolerance Frequency Drift Frequency Drift Rate HD1 Packet HD3 Packet HD5 Packet 4 2

140 115 0.8

-75

-25

-40

-40

-20 5.5 4 928

164.35 149 1.1 10 10 10 10 3.8 Enhanced Data Rate of Transmitter Parameter Condition Min. Typ. Max. Relative Transmit Power

/4 DQPSK max carrier frequency stability |0|

/4 DQPSK max carrier frequency stability |i|

/4 DQPSK max carrier frequency stability |0+i |

8DPSK max carrier frequency stability|0|

8DPSK max carrier frequency stability|i|

8DPSK max carrier

-4

-10

-75

-75

-10

-75

-75

-1.5 3 5 4 3 5 5 6.8 dBm 8 dB

-20

-20

-40

-40 175

75 25 40 40 20 KHz dBm dBm dBm dBm KHz KHz

KHz KHz KHz KHz KHz/50us Unit dB KHz 1 10 75 KHz 75 KHz 10 KHz 75 75 KHz KHz Version 0.2 Page 9 frequency stability|0+i|

/4 DQPSK Modulation Accuracy In-band spurious emissions ATS2853 Bluetooth Module With ANT SPEC RMS DEVIN 99% DEVM Peak DEVM F > F0 + 3MHz F < F0 - 3MHz F = F0 + 3MHz F = F0 - 3MHz F = F0 + 2MHz F = F0 - 2MHz F = F0 + 1MHz F = F0 - 1MHz

99

100

EDR Differential Phase Encoding

99 100 20

35

-40

-40

-40

-40

-20

-20

-26

-26

Basic Data Rate of Receiver Parameter Condition Min. Typ. Max. Sensitivity at 0.1% BER Maximum Input Power at 0.1% BER Adjacent Channel Selectivity C/I F = F0 + 1MHz F = F0 - 1MHz F = F0 + 2MHz F = F0 - 2MHz F = F0 + 3MHz F = Fimage

-90

-20

0 0

-30

-30

-40

-9

dBm dBm dBm dBm dBm dBm dB dB

Unit dBm dBm dB dB dB dB dB dB Enhanced Data Rate of Receiver Parameter Sensitivity at 0.01%

BER Maximum Input Power at 0.1% BER Condition

/4 DQPSK 8DPSK

/4 DQPSK 8DPSK Min. Typ. Max.

-20

-20

-90

-82

Unit dBm dBm dBm dBm Version 0.2 Page 10 ATS2853 Bluetooth Module With ANT SPEC Module Pin definitions ATS2853 Module Pin Configurations PIN NO. 1 NAME GND TYPE Power ground Ground FUNCTION Version 0.2 Page 11 ATS2853 Bluetooth Module With ANT SPEC 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 GND GPIO13 GPIO12 GPIO0 GPIO1 GPIO2 GPIO14 GPIO15 GPIO16 GPIO17 GPIO28 GPIO20 GPIO21 GPIO22 GPIO23 GPIO24 GPIO25 GPIO26 GPIO27 GND USB_DP USB_DM ONOFF VCC BAT GND ANGD AVCC INPUT1R INPUT1L INPUT0R INPUT0L INPUT2R INPUT2L VRO VRO_S AOUTR Power ground Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Ground General Purpose Input Output 13 General Purpose Input Output 12 General Purpose Input Output 0 General Purpose Input Output 1 General Purpose Input Output 2 General Purpose Input Output 14 General Purpose Input Output 15 Bi-directional General Purpose Input Output 16 Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Power ground Bi-directional Bi-directional Input General Purpose Input Output 17 General Purpose Input Output 28 General Purpose Input Output 20 General Purpose Input Output 21 General Purpose Input Output 22 General Purpose Input Output 23 General Purpose Input Output 24 General Purpose Input Output 25 General Purpose Input Output 26 General Purpose Input Output 27 Ground USB D+

USB D-

All-purpose hardware switch Power for Peripherals, typical voltage:3.1V Battery Voltage input Power input Ground Power ground Analog ground Ground for Analog circuit Power output Power output Power for Analog module, typical voltage:2.95V INPUT1 Right channel input INPUT1 Left channel input INPUT0 Right channel input INPUT0 Left channel input INPUT2 Right channel input INPUT2 Left channel input Analog input Analog input Analog input Analog input Analog input Analog input Analog output Direct drive mode bias Analog output Direct drive mode bias Analog output Right channel output Version 0.2 Page 12 ATS2853 Bluetooth Module With ANT SPEC AOUTL GPIO9 GPIO8 GPIO6 GPIO5 SVCC WIO1 WIO0 Analog output Bi-directional Bi-directional Bi-directional Bi-directional Power output Input Input Left channel output General Purpose Input Output 9 General Purpose Input Output 8 General Purpose Input Output 6 General Purpose Input Output 5 Power Supply for Hosc Wake up IO1 and LRADC2 input Wake up IO0 and LRADC1 input 39 40 41 42 43 44 45 46 Circuit Diagram Version 0.2 Page 13 ATS2853 Bluetooth Module With ANT SPEC Module Package Information ATS2853 Module Module Dimension (Top View) Version 0.2 Page 14 ATS2853 Bluetooth Module With ANT SPEC Recommended PCB layout Power on sequence Version 0.2 Page 15 ATS2853 Bluetooth Module With ANT SPEC Recommended keepout area information

. It is recommended to place it at the end of the printed circuit board

. Clearance area size: the distance is greater than 2.5mm Do not place metal objects in front, left, right, up and down positions Version 0.2 Page 16 ATS2853 Bluetooth Module With ANT SPEC PCB antenna radiation pattern Version 0.2 Page 17 ATS2853 Bluetooth Module With ANT SPEC Version 0.2 Page 18 ATS2853 Bluetooth Module With ANT SPEC Version 0.2 Page 19 ATS2853 Bluetooth Module With ANT SPEC Soldering recommendations Document History Revision V0.1 V0.2 Date 2023-6-13 2023-11-27 History First release Second release Version 0.2 Page 20 FCC Statement:

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

Integration instructions for host product manufacturers according to KDB 996369 D03 OEM Manual v01

2.2 List of applicable FCC rules CFR 47 FCC PART 15 SUBPART C has been investigated. It is applicable to the modular transmitter 2.3 Specific operational use conditions This module is stand-alone modular. If the end product will involve the Multiple simultaneously transmitting condition or

differentoperationalconditionsforastand-alonemodulartransmitterinahost,hostmanufacturerhavetoconsultwithmodule

manufacturerfortheinstallationmethodinendsystem. 

2.4 Limited module procedures Not applicable 2.5 Trace antenna designs Not applicable 2.6 RF exposure considerations This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. T 2.7 Antennas This radio transmitter ATS2853 has been approved by Federal Communications Commission to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain indicated for any type listed are strictly prohibited for use with this device. Antenna No. Antenna 1 Operate frequency band 2402MHz~2480MHz Antenna Type PCB Antenna Maximum antenna gain

-0.58dBi 2.8 Label and compliance information The final end product must be labeled in a visible area with the following" Contains FCC ID: YMX-ATS2853 ". 2.9 Information on test modes and additional testing requirements Host manufacturer is strongly recommended to confirm compliance with FCC requirements for the transmitter when the module is installed in the host. 2.10 Additional testing, Part 15 Subpart B disclaimer Host manufacturer is responsible for compliance of the host system with module installed with all other applicable requirements for the system such as Part 15 B. 

THE END!

XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO., LTD Agent Authorization Letter 2023-11-15 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern:

We, the undersigned, hereby authorize Shenzhen Most Technology Service Co., Ltd. to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Name:

Position:

Company Name:

Address:

Tel / Fax E-Mail:

Pengfei Cui Safety Engineer XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO., LTD

(5/F) NO.168, QIANPU ROAD, SIMING DISTRICT, XIAMEN, CHINA

+86-592-7266925/ +86-592-5532788 cpf.cui@easepal.com.cn

XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO., LTD. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 11.10, 2023 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: FCC ID:YMX-ATS2853

[XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO., LTD.] certifies that the equipment for which authorization is sought is notcovered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Rev 11/10/2023 XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO., LTD. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 03.21, 2023 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID:YMX-ATS2853

[XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO., LTD.] certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. Sincerely, Rev 11/10/2023

XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO., LTD Long Term Confidentiality Request Letter 2023-11-15 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR (FCC ID:YMX-ATS2853) To Whom It May Concern:

This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the

required to be submitted with this application be permanently withheld from public review. e.g. Block diagram e.g. SCH e.g. Operational Description The above documents are company proprietary information that could never get into the possession of your competition. Please contact me if there is any information you may need. Sincerely, Name:

Position:

Company Name:

Address:

Tel / Fax E-Mail:

Pengfei Cui Safety Engineer XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO., LTD

(5/F) NO.168, QIANPU ROAD, SIMING DISTRICT, XIAMEN, CHINA

+86-592-7266925/ +86-592-5532788 cpf.cui@easepal.com.cn

Modular Approval Request FCC (KDB 996369 D01 & Part 15.212) FCC ID: ____YMX-ATS2853_______________ Items to be covered by Single modular transmitters. 1. The modular transmitter must have its own RF shielding. Answer from applicant Yes 2. 3. 4. 5. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with Part 15 requirements under conditions of excessive data rates or over-modulation. The modular transmitter must have its own power supply regulation. The modular transmitter must comply with the antenna requirements of Section 15.203 and 15.204(b)(c). The antenna must either be permanently attached or employ a unique antenna coupler (at all connections between the module and the antenna, including the cable). The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing. This is intended to demonstrate that the module is capable of complying with Part 15 emission limits regardless of the device into which it is eventually installed. 6. The modular transmitter must be equipped with either a permanently affixed label or must be capable of electronically displaying its FCC identification number in accordance with 15.212 (a)(1)(vi)(A) / (B). 7. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these instructions must be included in the application for equipment timing authorization. For example, requirements that must be met before a transmitter is authorized for operation under Section 15.231. For instance, data transmission is prohibited, except for operation under Section 15.231(e), in which case there are separate field strength level and timing requirements. Compliance with these requirements must be assured. there are very strict operational and 8. The modular transmitter must comply with any applicable RF exposure requirements. For example, FCC Rules in Sections 1.1310, 2.1091, 2.1093, and specific Sections of Part 15, including 15.319(i), 15.407(f), 15.253(f) and 15.255(g), require that Unlicensed PCS, UNII and millimeter wave devices perform routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectrum transmitters operating under Section 15.247 are required to address RF Exposure compliance. Modular transmitters approved under other Sections of Part 15, when necessary, may also need to address certain RF Exposure concerns, typically by providing specific installation and operating instructions for users, installers and other interested parties to ensure compliance. Yes Yes Yes Yes Yes Yes Yes Items to be covered by Split modular transmitters. 1. The modular transmitter must comply with all requirements of a single modular transmitter except for items (1) & (5) of the above single modular approval requirements. Answer from applicant 2. Only the radio front end must be shielded. The physical crystal and tuning capacitors may be located external to the shielded radio elements. The interface between the split sections of the modular system must be digital with a minimum signalling amplitude of 150 mV peak-to-peak. 3. Control information and other data may be exchanged between the transmitter control elements and radio front end. 4. The sections of a split modular transmitter must be tested installed in a host device(s) similar to that which is representative of the platform(s) intended for use. 5. Manufacturers must ensure that only transmitter control elements and radio front end components that have been approved together are capable of operating together. The transmitter module must not operate unless it has verified that the installed transmitter control elements and radio front end have been authorized together. Manufacturers may use means including, but not limited to, coding in hardware and electronic signatures in software to meet these requirements, and must describe the methods in their application for equipment authorization. Note: A limited modular approval (LMA) may be granted for single or split modular transmitters that comply partially with the requirements above. Name: Pengfei Cui Position:Safety Engineer Company Name:XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO., LTD Address:(5/F) NO.168, QIANPU ROAD, SIMING DISTRICT, XIAMEN, CHINA Tel / Fax+86-592-7266925/ +86-592-5532788 E-Mail: cpf.cui@easepal.com.cn

Attestation Statements TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for (FCC ID:YMXATS2853)

(XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO.,LTD.), the undersigned, hereby authorize (Cozzia USA LLC) to act as our designated U.S. agent for service of process, (XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO.,LTD.) accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commissionrelated proceeding involving the equipment.

(Cozzia USA LLC) accepts the responsibility to act as designated U.S. agent for service of process, provides an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commissionrelated proceeding involving the equipment. Applicant Information Company name:XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO.,LTD. Contact Name:Cui Pengfei Address:5/FNO.168, QIANPU ROAD,SIMING DISTRICT,XIAMEN,Fujian CHINA Telephone No:18059250350 Email:cpf.cui@easepal.com.cn RFN:0020057428 U.S. Agent Information:

Company Name:Cozzia USA LLC Address:861 S. Oak Park RoadCovina, CA 91724 Contact Name:Jimmy Lo Telephone No:8779770656 Email:jimmy@cozziausa.com FRN0025490376 Applicant Signature: Cui Pengfei Agent Signature:

Applicant printed name:

(if the agent is different from the applicant) Agent printed name: