TM ISL37101U-EVAL PRELIMINARY Data Sheet March 2002 File Number 8033 PRISM 3 11 Mbps Wireless Local Area Network USB The Intersil ISL37101U WLAN USB
(Note 1) is a complete wireless high speed Network Interface Card (NIC) utilizing the Intersil PRISM 3 Direct Sequence Spread Spectrum (DSSS) Wireless Transceiver chip set. It provides a complete PRISM 3 reference design evaluation platform of hardware and software to system providers or integrators requiring wireless data communications capability and is ideal for integration into computer platforms. Evaluation kits include a pair of WLAN USB cards designed to Intersils PRISM reference design, Microsoft Windows Driver, Local Area Network evaluation software, PRISM Transmitter Test Utilities (PTTU) software (Note 3) and documentation to get your evaluation started quickly. It supports the IEEE 802.11 network specification for DSSS signaling, providing data rates of 1, 2, 5.5 and 11Mbps. Access Points are available from a number of suppliers, enabling a total wireless network solution Typical operating ranges are shown in Table 1. TABLE 1. TYPICAL OPERATING RANGE (Notes 2,4) DATA RATE (Mbps) 11 5.5 2 1 INDOOR RANGE 120 feet (37 meters) 200 feet (61 meters) 240 feet (73 meters) 300 feet (91 meters) OUTDOOR RANGE 500 feet (152 meters) 800 feet (243 meters) 1300 feet (396 meters) 1750 feet (533 meters) Ordering Information PART NUMBER ISL37101U-EVAL ISL37101V-CD DESCRIPTION WLAN Evaluation Kit Reference Design CARDS/SET 2 NA Packaging Features
FCC Certified Under Part 15 to Operate in 2.4GHz ISM Band
Support for 11, 5.5, 2 and 1 Megabit Per Second (Mbps) Data Rates
Supports the lEEE 802.11 Direct Sequence Specification
Driver Supports Microsoft Windows 95, 98, 2000, CE and LINUX
Supports Dual Diversity Antennas
EVAL Kit Supplied With Left and Right PCB Mounted Dipole Antennas
Advanced RAKE Receiver Design with Decision Feedback Equalizer
Provides Wireless Data Communications at Full Ethernet Speed
Mini-USB design .1.57X2.3 uses miniture USB connector
Designed To Fully Support the VSB 1.1 Specification
Intelligent Power Control, Including Low Power Standby Mode
Complete Reference Design, the ISL37101U-CD is Available to Ensure Minimum Time-to-Market NOTES:
1. Throughout this document, all references to USB, WLAN adapter, adapter, or card refer to a card assembly conforming to the USB 1.1 Specification 2. The range will vary in different operating environments due to effects such as building construction. 3. At present, PTTU supports Windows 95, 98, 2000 and ME 4. Data taken using PCB mounted dipole antennas. PRISM is a registered trademark of Intersil Americas Inc. PRISM and design is a trademark of Intersil Americas Inc. Microsoft Windows and Microsoft Windows NT are registered trademarks of Microsoft Corporation. LINUS is a registered trademark of Linus Torvalds. 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2001, All Rights Reserved ISL37101U-EVAL Functional Overview The WLAN USB is designed to operate in the 2.4GHz ISM frequency band, channels 1 to 11, as specified by the FCC in the USA. The Card will also operate on channels 12 through 14, where permitted by local regulatory authorities. Radio equipment must be certified in a country prior to use. Refer to Table 3 for a list of countries and agencies that have approved the ISL37101U-EVAL for operation. The Intersil PRISM Chip Set allows for high level integration for reduced size, increased throughput, improved radio performance and faster time to market. The WLAN USB implements Direct Sequence Spread Spectrum DSSS technology providing superior noise and signal jamming immunity including less severe impact from unintentional radiators such as microwave ovens. The user can connect the USB in an ad-hoc peer to peer networking scheme, allowing for instant network setup in any office environment. By using an access point, the wireless LAN can be set up to allow for a greater number of users to interconnect, and to increase the coverage area. With a portal (i.e., Access Point), the wireless LAN can be easily connected into an existing wired LAN, allowing for easy expansion of the service. Compared to the PRISM II chip set, the PRISM 3 generation offers:
Low loss front end designed for maximum range
Higher level of chip integration and less peripheral components to reduce material costs (3-chip solution)
Support of optional IEEE 802.11 Short Preamble for significantly increased data throughput with room for additional user defined functions
Has a mini-USB interface A complete Reference Design for the ISL37101U is available to ensure minimum time-to-market. This information contains details for manufacturing a USB WLAN assembly, including Gerber PC board files, an accurate Bill of Material with component sourcing and complete mechanical drawings and a complete Radio Description and test plan. The ISL3871 Media Access Controller
(MAC) Protocol Handler The ISL3871 MAC/Baseband Processor and its firmware are responsiblefor running the IEEE 802.11 protocol in the WLAN card. This section describes the features of IEEE 802.11 that are implemented. The functions supported by the STA (station) Firmware are:
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) with Random Backoff
WEP Security
Short/Long Preamble with multirate
RTS/CTS Handshake (Ready To Send/Clear To Send) and NAV Management (Network Allocation Vector)
MAC Level Acknowledgments (Media Access Control)
Re-Transmission of Unacknowledged Frames
Duplicate Detection and Rejection
Broadcast and Multicast Frames
Fragmentation and Re-Assembly
Power Management (Planned)
Timestamp Synchronization
DCF (Distributed Coordination Function)
PCF (Point Coordination Function)
Beacon Generation in an Ad-Hoc Network
Probe Response Generation in an Ad-Hoc Network Card Information Structure The standard Intersil WLAN USB will be supplied with information embedded in the Plug and Play (PnP) shown in Table 2. It should be noted that in most systems this information is displayed when the card is inserted. Customization of the PnP for specific customer requirements is available upon request, to enable customer information to be displayed when the card is inserted. Plug Record Contents 401 407 TABLE 2. Usage Default Vendor/Product ID 09AA XXXX Bus/Self Powered Bus Powered
(value 8000) 2 ISL37101U-EVAL IEEE 802.11 International Agreement and Frequency Assignments The IEEE 802 LAN committee has forged an international agreement providing for wireless data communication standards for the frequency range of 2.4GHz to 2.4835GHz, as allocated by the FCC in the USA, and in the 2.471GHz to 2.497GHz frequency range, as specified by the regulatory authority in Japan. These standards are designed to focus the industry to develop highly integrated, low cost, interoperable WLAN equipment, of which the ISL37101U-EVAL is a prime example. In the U.S., there are 11 channels specified by the FCC in the 2.412GHz to 2.462GHz range. In Japan, channel 14 at 2.484GHz is authorized under ARIB STD-33 and channels 1-13 are authorized under ARIB STD-T66. The ETSl (European) regulatory body conforms to the USA (FCC) channel assignments with the exception that channels 12 and 13 are also allowed. Some countries in Europe, notably France and Spain have unique channel restrictions. Although information contained in Table 3 is deemed to be accurate, local regulatory authorities should be consulted before using such equipment. The available channels of operation in the 2.4GHz to 2.4835GHz and 2.471GHz to 2.497GHz ranges are as follows:
TABLE 3. IEEE 802.11 CHANNELS CHANNEL NUMBER CHANNEL FREQUENCY GEOGRAPHIC USAGE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 2412MHz 2417MHz 2422MHz 2427MHz 2432MHz 2437MHz 2442MHz 2447MHz 2452MHz US, CA, ETSI, MKK US, CA, ETSI, MKK US, CA, ETSI, MKK US, CA, ETSI, MKK US, CA, ETSI, MKK US, CA, ETSI, MKK US, CA, ETSI, MKK US, CA, ETSI, MKK US, CA, ETSI, MKK 2457MHz US, CA, ETSI, MKK, FR, SP 2462MHz US, CA, ETSI, MKK, FR, SP 2467MHz 2472MHz 2484MHz ETSI, FR, MKK ETSI, FR, MKK MKK KEY:
US = United States, CA = Canada, ETSI = European countries
(except France and Spain), FR = France, SP = Spain, MKK = Japan 3 The ISL37101U is shipped with USA-compliant firmware. In order to ensure regulatory-compliant channel usage in a particular country, special geographic-specific firmware is available for customer production assemblies which restricts channel usage. Examples include ETSI-compliant firmware, etc. Since the end user does not have the ability to alter this firmware, regulatory compliance is ensured. Agency and Regulatory Body Approvals The WLAN USB will comply to the standards shown in Table 4:
TABLE 4. COMPLIANCE STANDARDS COUNTRY APPROVAL NOTES USA FCC part 15, Sec. 15.247, Sec. 15.107 and 15.109 Canada ICAN RSS-210 Europe EN 60950 EN 301 489-1 V1.2.1 (2000-08) EN 301 489-17 V1.1.1 (2000-09) EN 300 328 Part 1 V1.2.2 (2000-07) EN 300 328 Part 2 V1.1.1 (2000-07) Approval pending for Intentional Radiators &
Computer Peripheral Designed for compliance Designed for compliance Japan ARIB STD-T66 ARIB STD-33 Designed for compliance FCC Information to User This product does not contain any user serviceable components and is to be used with approved antennas only. Any product changes or modifications will invalidate all applicable regulatory certifications and approvals. FCC Electronic Emission Notices 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 2. This device must accept any interference received, including interference that may cause undesired operation. FCC Radio Frequency Interference statement 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 when the equipment is operated in a commercial environment. 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. Operation of this equipment in a residential area may cause harmful interference in which case the user will be required to correct the interference at his own expense. ISL37101U-EVAL
[5] AN9829 Application Note, Intersil Corporation, Brief Tutorial on IEEE 802.11 Wireless LANs.
[6] AN9820 Application Note, Intersil Corporation, A Condensed Review of Spread Spectrum Techniques for ISM Band Systems.
[7] AN9665 Application Note, Intersil Corporation, PRISM Power Management Modes. Further information can be found in the following:
Intersil PRISM 3 Chip Set datasheets, web home page, http://www.intersil.com/design/prism/ser-p30-11mbps.asp
IEEE 802.11 Standards Project (available from the IEEE, New York, USA). 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. Export restrictions This product or software contains encryption code which may not be exported or transferred from the US or Canada without an approved US Department of Commerce export license. FCC Guidelines for Human Exposure CAUTION: To comply with FCC RF exposure compliance, a separation distance of at least 20 cm (8 inches) must be maintained between the antenna of this device and all persons The EIRP was measured for the lower, middle and highest frequencies used by the transmitter. The results in Table 5 are based on a safe distance between antenna and operator of 8 inches.The equipment therefore fulfills the requirements on power density for general population / uncontrolled exposure of 1.0 mW/cm2 and therefore complies with the requirements of FCC part 15.247 (b) (4) and FCC OET Bulletin 65 including supplements A, B and C. TABLE 5. POWER DENSITY CALCULATION Measured EIRP
(mW) Calculated Power Density (mW/cm2) Ch.1 97.96 0.08 Ch.6 95.72 Ch.11 91.42 0.08 0.07 WARNING! Any changes or modifications of equipment not expressly approved by Intersil could void the users authority to operate the equipment. References For Intersil documents available on the internet, see web site http://www.intersil.com/
[1] TB337 Tech Brief, Intersil Corporation, A Brief Tutorial on Spread Spectrum and Packet Radio.
[2] AN9861 Application Note, Intersil Corporation, ISL37101U-
EVAL PRISM 3 11 Mb USB Wireless LAN Radio Description
[3] TB382 Tech Brief, Intersil Corporation, Measurement of WLAN Receiver Sensitivity.
[4] AN9850 Application Note, Intersil Corporation, Complementary Code Keying Made Simple. 4 ISL37101U-EVAL Absolute Maximum Ratings Supply Voltage . -0.3V to 5.5V (Max) Storage Temperature (Note 5). -20oC to 85oC Operating Conditions Temperature Range . 0oC TA 70oC Supply Voltage Range. 4.5V to 5.5V Caution: These are the absolute maximum ratings for the USB product. Exceeding these limits could cause permanent damage to the card. NOTE:
5. All temperature references refer to ambient conditions. Electrical Specifications Test Conditions: Supply Voltage (VCC) = 5.0V, Ambient Temperature (TA) = 25oC, Unless Otherwise Specified PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS CURRENT CONSUMPTION Initializatoin Current Average Current
(2% TX; 8% RX; 90% Standby) Continuous Transmit Mode Continuous Receive Mode IEEE 802.11 Power Save Mode USB suspend current miniUSB LOGIC LEVELS Differential 1 Differential 0 RF SYSTEM SPECIFICATIONS Transmitter Power Output (std Filter) EIRP - dipole antenna Receive Sensitivity (J2) Multipath Delay Spread using Naptali Model ICC ICC ICC ICC ICC ICC Pout mW Receiving Valid Packets Required at target connector input
(D+) - (D-) > 200mV and D+ > Vih
(D-) - (D+) > 200 mV and D- > Vih RX_S 1Mbps, 8% PER 2Mbps, 8% PER 5.5Mbps, 8% PER 11Mbps, 8% PER TDELAY 2Mbps, 8% PER 5.5Mbps, 8% PER 11Mbps, 8% PER Multipath Receive Sensitivity RX_SJTC 1Mbps, 8% PER, Office C using JTC Model 2Mbps, 8% PER,Commercial B 5.5Mbps, 8% PER, Commercial B 11Mbps, 8% PER, Commercial B Maximum Receive Level RX_MAX PER <8%
Third Order Intercept Point (Input) IIP3_90
-90 dBm input IIP3_25
-25 dBm input 5
-3
52 98 235 237 85 3.0 3.3 3.3 16.5 180
-93
-91
-90
-85
>290 200 105
-83
-81
-61
-77
+3
-5 25 55
280 260
4.0
mA mA mA mA mA mA V V dBm mW dBm dBm dBm dBm nSec nSec nSec dBm dBm dBm dBm dBm dBm dBm ISL37101U-EVAL Electrical Specifications Test Conditions: Supply Voltage (VCC) = 5.0V, Ambient Temperature (TA) = 25oC, Unless Otherwise Specified (Continued) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS Carrier Supression Image Rejection IF Rejection Adjacent Channel Rejection Data Rate (Physical Layer) NOTES:
TX_sup Test Mode PER <8%
PER <8%
PER <8% (Note 7) IR IFR ACR Rate
-41 NA ZIF NA ZIF 33 1, 2, 5.5 and 11
dB dB dB dB Mbps 6. Refer to Application Note PRISM Power Management Modes AN9665 [3]. 7. The adjacent channel measurement is carried out on two channels separated by 25MHz (5 channels). All Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporations quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com Sales Office Headquarters NORTH AMERICA Intersil Corporation 7585 Irvine Center Drive Suite 100 Irvine, CA 92618 TEL: (949) 341-7000 FAX: (949) 341-7123 Intersil Corporation 2401 Palm Bay Rd. Palm Bay, FL 32905 TEL: (321) 724-7000 FAX: (321) 724-7946 6 EUROPE Intersil Europe Sarl Ave. C - F Ramuz 43 CH-1009 Pully Switzerland TEL: +41 21 7293637 FAX: +41 21 7293684 ASIA Intersil Corporation Unit 1804 18/F Guangdong Water Building 83 Austin Road TST, Kowloon Hong Kong TEL: +852 2723 6339 FAX: +852 2730 1433 ISL37100P-EVAL 7