Conexant Systems 37300XU Wireless LAN transmitter User Manual
Conexant Systems Inc. Wireless LAN transmitter
Manual
1
TM
File Number FNXXXX
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
PRELIMINARY
ISL37300XU-EVAL
PRISM 2.5 11Mbps Wireless Local Area
Network USB Card
The Intersil ISL37300XU WLAN USB-
card is a complete wireless high speed
Network Interface Card (NIC) utilizing the
Intersil PRISM® 2.5 Direct Sequence
Spread Spectrum Wireless Transceiver chip set. It provides a
complete PRISM 2.5 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.
The Evaluation kit (ISL37300XU-EVAL) includes two WLAN
USB-cards designed to Intersil’s Prism reference design, Microsoft
Windows® Driver, Local Area Network evaluation software,
Prism Test Utilities (PTU) (note 1) software and documentation to
complete the evaluation. It supports the IEEE 802.11b network
specification for Direct Sequence Spread spectrum DSSS
signaling, providing data rates of 1, 2, 5.5, and 11 Mbps.
Evaluation kit software updates are available on the Intersil Web
Site.
In addition to the evaluation kit, a complete PRISM chipset
WLAN reference design package (ISL37300XU-CD) is available.
It contains all the documentation needed for manufacturing of the
Prism 2.5 USB wireless network card including: Cadence/Allegro
Layout, Gerber files, Concept schematic, Bill of Materials,
assembly and mechanical drawings, test plan, and even a copy of
the application for FCC equipment authorization. Customers who
license the reference design also receive password access to FCC
Intersil’s Premier Web site for up to the minute updates on
hardware and software.
Features
• Certified Under Part 15 to Operate in 2.4GHz ISM Band
(Approval Pending)
• 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, 98SE, 2000,
NT and ME
• Supports Dual Diversity Antennas
• Advanced RAKE Receiver Design with Decision Feedback
Equalizer combats multipath fading
• Provides Wireless Data Communications at Full Ethernet Speed
• Designed to Fully Support USB specification 1.1 Defined
Mechanical and Environmental Stress Conditions
• Intelligent Power Control, Including IEEE 802.11 Power Save
Mode
• Complete Reference Design, the ISL37300XU CD is available
to ensure Minimum Time-to-Market
NOTES:
1. At present, PTU supports Windows 95, 98 and 98SE. An upgrade is in
process which will add support for NT.
2. The range will vary in different operating environments due to effects
such as building construction
Packaging
Ordering Information
PART NUMBER DESCRIPTION CARDS/SET
ISL37300XU-EVAL WLAN Evaluation Kit 2
Data Sheet September 2001
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Access Points will be available from a number of suppliers,
enabling a totally wireless network solution. Typical operating
ranges are shown in Table 1..
Functional Overview
The WLAN USB-Card 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 4 for a list of countries and
agencies that have approved the ISL37300XU-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-card 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-card 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 2.5 generation
offers:
•Low loss front end designed for maximum range
•Higher level of chip integration and less peripheral components
to reduce material costs
•Support of optional IEEE 802.11 Short Preamble for
significantly increased data throughput
A complete Reference Design for the ISL37300XU is available to
ensure minimum time-to-market. This information contains details
for manufacturing a USB-card WLAN assembly, including Gerber
PC board files, a Bill of Material with component sourcing,
mechanical drawings, a detailed Radio Description with debug
directions and a test plan.
The ISL3873 Media Access Controller (MAC)
Protocol Handler
The ISL3873 MAC/Baseband Processor and its firmware are
responsible for 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)
•Beacon Generation in an Ad-Hoc Network
•Probe Response Generation in an Ad-Hoc Network
Card Information Structure
The standard Intersil WLAN USB-card will be supplied with
information embedded in the PDA for use in enumeration. Table 2
shows the Plug Record and the default information. Customization
of the enumeration values can be performed by modifying the
PDA plug records and reflashing the PDA, Primary, and
Secondary. Please refer to the Prism Driver Programmers Manual
for more information.
TABLE 1. TYPICAL OPERATING RANGE (NOTE 2 )
DATA RATE
(Mbps) INDOOR RANGE OUTDOOR RANGE
11 120 feet (37 meters) 500 feet (152 meters)
5.5 200 feet (61 meters) 800 feet (243 meters)
2 240 feet (73 meters) 1300 feet (396 meters)
1 300 feet (91 meters) 1750 feet (533 meters)
TABLE 2.
Plug Record
Contents Usage Default
401 Vendor/Product
ID
XXXX XXXX
407 Bus/Self Powered Bus Powered
(value XXXX)
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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 ISL37300XU-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, one channel at 2.484GHz
is authorized. 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 ISL37300XU is shipped with FCC-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
The available channels of operation in the 2.4GHz to 2.4835GHz and
2.471GHz to 2.497GHz ranges are as follows:
.
Agency and Regulatory Body Approvals
The WLAN USB-card will comply to the standards shown in
Table 4:
TABLE 3. IEEE 802.11 CHANNELS
CHANNEL
NUMBER CHANNEL
FREQUENCY GEOGRAPHIC
USAGE
1 2412MHz US, CA, ETSI, MKK
2 2417MHz US, CA, ETSI, MKK
3 2422MHz US, CA, ETSI, MKK
4 2427MHz US, CA, ETSI, MKK
5 2432MHz US, CA, ETSI, MKK
6 2437MHz US, CA, ETSI, MKK
7 2442MHz US, CA, ETSI, MKK
8 2447MHz US, CA, ETSI, MKK
9 2452MHz US, CA, ETSI, MKK
10 2457MHz US, CA, ETSI, MKK, FR, SP
11 2462MHz US, CA, ETSI, MKK, FR, SP
12 2467MHz ETSI, FR, MKK
13 2472MHz ETSI, FR, MKK
14 2484MHz MKK
KEY:
US = United States, CA = Canada, ETSI = European countries
(except France and Spain),
FR = France, SP = Spain, MKK = Japan
TABLE 4. COMPLIANCE STANDARDS
COUNTRY APPROVAL NOTES
USA FCC part 15,
Sec. 15.247,
Sec. 15.107 and 15.109
Approval pending
for Intentional
Radiators &
Computer
Peripheral
Canada ICAN RSS-210 Designed for
compliance
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)
Designed for
compliance
Japan ARIB STD-T66
ARIB STD-33
Designed for
compliance
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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.
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.
References
For Intersil documents available on the internet, see web site
http://www.intersil.com
or
Intersil AnswerFAX (321) 724-7800.
[1] TB337 Tech Brief, Intersil Corporation, “A Brief Tutorial on
Spread Spectrum and Packet Radio”, AnswerFAX document
No. 82337.
[2] TB382 Tech Brief, Intersil Corporation, “Measurement of
WLAN Receiver Sensitivity”
[3] AN9850 Application Note, Intersil Corporation,
“Complementary Code Keying Made Simple”
[4] TB395, Tech Brief, Intersil Corporation, “RF Probing of the
ISL37300P and the ISL37300XU”
[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”
Further information can be found in the following:
•Intersil PRISM 2.5 data sheets, web home page,
http://www.intersil.com/design/prism/ser-p25-11mbps.asp
•IEEE 802.11 Standards Project (available from the IEEE,
New York, USA).
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Absolute Maximum Ratings Operating Conditions
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 5.5V (Max)
Storage Temperature (Note 3). . . . . . . . . . . . . . . . . . . . . . . . -20oC to 85oC
Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC ≤ TA ≤ 70oC
Supply Voltage Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
Caution: These are the absolute maximum ratings for the USB-card product. Exceeding these limits could cause permanent damage to the card.
NOTE:
3. 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
Initialization Current ICC -- - mA
Average Current
(2% TX; 8% RX; 90% Power Save)
ICC -- - mA
Continuous Transmit Mode ICC -346 - mA
Continuous Receive Mode ICC Receiving Valid Packets - 237 - mA
Current in IEEE 802.11 Power Save Mode ICC -TBD - mA
USB LOGIC LEVELS
Required at target connector input
Differential “1”(D+) - (D-) > 200mV and D+ > Vih 3.3 V
Differential “0”(D-) - (D+) > 200mV and D- > Vih 3.3 V
RF SYSTEM SPECIFICATIONS
Transmitter Power Output Pout Using Murata probe
(MXGS83RK3000) at J1 and series
blocking capacitor
- 16 - dBm
EIRP EIRP @ -30 dB 1st Side Lobes - 18.7 - dBm
Receive Sensitivity RX_S 1Mbps, 8% PER - -93 - dBm
2Mbps, 8% PER - -90 - dBm
5.5Mbps, 8% PER - -89 - dBm
11Mbps, 8% PER - -85 - dBm
Multipath Delay Spread
using Naftali Model
(TDelay) 2Mbps, 8% PER TBD nSec
5.5Mbps, 8% PER TBD nSec
11Mbps, 8% PER TBD nSec
Multipath Receive Sensitivity
using JTC models (note 5)
RX_SJTC 1Mbps, 8% PER, Office C
Delay spread = 450ns
TBD dBm
2Mbps, 8% PER, Commercial B
Delay spread = 150ns
TBD dBm
5.5Mbps, 8% PER, Commercial B
Delay spread = 150ns
TBD dBm
11Mbps, 8% PER, Commercial B
Delay spread = 150ns
TBD dBm
Maximum Receive Level RX_MAX PER <8% (11 Mbps) >10 dBm
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All Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at website 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 web site www.intersil.com
Sales Office Headquarters
NORTH AMERICA
Intersil Corporation
2401 Palm Bay Rd.
Palm Bay, FL 32905
TEL: (321) 724-7000
FAX: (321) 724-7240
EUROPE
Intersil SA
Mercure Center
100, Rue de la Fusee
1130 Brussels, Belgium
TEL: (32) 2.724.2111
FAX: (32) 2.724.22.05
ASIA
Intersil Ltd.
8F-2, 96, Sec. 1, Chien-kuo North,
Taipei, Taiwan 104
Republic of China
TEL: 886-2-2515-8508
FAX: 886-2-2515-8369
Third Order Intercept Point (Input) IIP3_HG High gain mode -10 dBm
IIP3_LG Low gain mode TBD dBm
Carrier Suppression TX_sup Test Mode -51 -41 -35 dB
Image Rejection IR PER <8% 45 dB
IF Rejection IFR PER <8% >84 dB
Adjacent Channel Rejection ACR PER <8%, 11Mbps signal w/ 11 Mbps
jammer 25 MHz offset (Note 4)
46 47 49 dB
Data Rate (Physical Layer) Rate 1, 2, 5.5
and 11
Mbps
4. The adjacent channel measurement is carried out on two channels separated by 25MHz (5 channels).
5. The jammer signal is a continuos DSSS 11 Mbps waveform with -40dBc first sidelobes
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
FNXXX
Addendum 1 to ISL37300XU-eval datasheet
CAUTION:
To comply with FCC RF exposure compliance
requirements, a separation distance of at
least 20 cm must be maintained between the
antenna of this device and all persons.