Conexant Systems 37400M 11Mbps Wireless Local Area Network PC Card User Manual ISL37400M eval Data Sheet
Conexant Systems Inc. 11Mbps Wireless Local Area Network PC Card ISL37400M eval Data Sheet
Extract of preliminary user manual
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TM
File Number
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
ISL37400M-EVAL
PRISM 2.5 11Mbps Wireless Local Area
Network PC Card
The Intersil ISL37400M WLAN PC
Card (Note 1) 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.
Evaluation kits include two WLAN PC cards designed to
Intersil’s 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.
Supporting the IEEE 802.11 network specification for Direct
Sequence Spread Spectrum DSSS signaling, the card is
packaged in a PCMCIA Type II extended cover set. The card
provides data rates of 1, 2, 5.5 and 11Mbps. Access Points
will be available from a number of suppliers, enabling a total
wireless network solution Typical operating ranges are
shown in Table 2..
Features
• FCC 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, 2000,
NT, CE and LINUX®
• Supports Dual Diversity Antennas
• Advanced RAKE Receiver Design with AGC
• Provides Wireless Data Communications at Full
Ethernet Speed
• Designed to Fully Support miniPCI Type 3A Defined
Mechanical and Environmental Stress Conditions
• Intelligent Power Control, Including Low Power
Standby Mode
• Complete Reference Design, the ISL37400M is
Available to Ensure Minimum Time-to-Market
NOTES:
1. Throughout this document, all references to ‘PC Card’, ‘WLAN
adapter’, ‘adapter’, or ‘card’ refer to a card assembly conforming
to the mechanical size specifications of the miniPCI Type 3A.
2. The range will vary in different operating environments due to
effects such as building construction.
3. At present, PTTU supports Windows 95 and 98. An upgrade is in
process which will add support for NT.
Packaging
TABLE 1. TYPICAL OPERATING RANGE (NOTE 2)
DATA RATE
(Mbps) INDOOR RANGE OUTDOOR RANGE
11 120 feet (37 meters) 400 feet (122 meters)
5.5 200 feet (61 meters) 600 feet (183 meters)
2 240 feet (73 meters) 750 feet (228 meters)
1 300 feet (91 meters) 1000 feet (305 meters)
Ordering Information
PART NUMBER DESCRIPTION CARDS/SET
ISL37400M-EVAL WLAN Evaluation Kit 2
Data Sheet June 2001
Authors: Douglas Kalcik & Ken Diaz
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Functional Overview
The WLAN PC 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 3 for a list of countries and agencies that have approved
the ISL37400M-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 PC 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 PC 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 first generation PRISM II chip set, the
PRISM 2.5 generation offers:
• 3.3V operation for reduced power dissipation
• Reduction in current drain for extended battery life
• Dual antenna’s for use with Diversity circuits to
improved multipath performance
• 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 ISL37400M is
available to ensure minimum time-to-market. This
information contains detailesfor manufacturing a miniPCI
WLAN assembly, including Gerber PC board files, an
accurate Bill of Material with component sourcing and
complete mechanical drawings.
Related Literature
To learn more about what the IEEE 802.11 is, refer to:
• Tech Brief TB337, Intersil Corporation, “A Brief Tutorial
on Spread Spectrum and Packet Radio”[1].
For a more detailed description of radio operation, please
refer to:
• Application Note AN9951, Intersil Corporation,
“ISL37400M-EVAL PRISM 2.5 11 Mb miniPCI Wireless
LAN Radio Description” [2]
The HFA3841 Media Access Controller
(MAC) Protocol Handler
The ISL3874 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)
• 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 PC Card will be supplied with
information embedded in the CIS shown in Table 2. It should
be noted that in most systems this information is displayed
when the card is inserted. Customization of the CIS for
specific customer requirements is available upon request, to
enable customer information to be displayed when the card
is inserted.
TABLE 2. CIS EMBEDDED INFORMATION
FUNCTION NAME CONTENT
Manufacturer’s ID 00
Function ID Network Adapter
Product Revision 1
Manufacturer Intersil Corporation
Product HFA3841
PROG
LOT
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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
ISL37400M-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 available channels of operation in the 2.4GHz to
2.4835GHz and 2.471GHz to 2.497GHz ranges are as follows:
The ISL37400M 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 PC Card will comply to the standards shown in
Table 4:
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 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
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, MKKFR, SP
11 2462MHz US, CA, ETSI, MKKFR, SP
12 2467MHz ETSI, FR
13 2472MHz ETSI, FR
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 ETSI 300.328 Nov 96
EMC prETS 300.826
Designed for compliance
Japan MKK Designed for compliance
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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
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 and therefore complies with the
requirements of FCC part 15.247 (b) (4) and FCC OET
Bulletin 65 incl. supplements A, B and C.
WARNING! Any changes or modifications of equipment not expressly
approved by Intersil could void the user’s authority to operate the equipment.
3.3V miniPCI Interface Standard
CAUTION: This assembly is designed to operate with a
supply voltage of 3.3V in laptop computers supporting the
dminiPCI standard. As such, it is mechanically keyed to
prevent improper insertion in laptops. Do not therefore force
engagement of the card in the miniPCI slot of the laptop.
Permanent damage may occur if operated outside of the
specified limits listed in this document.
References
For Intersil documents available on the internet, see web site
http://www.intersil.com/
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] AN9951 Application Note, Intersil Corporation,
“ISL37400M-EVAL PRISM 2.5 11 Mb miniPCI Wireless
LAN Radio Description”
Further information can be found in the following:
• Intersil PRISM 2.5 datasheets, 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).
TABLE 5. Power Density Calculation
Ch.1 Ch.6 Ch.11
Measured EIRP
(mW
66.1 67.6 64.6
Calculated Power
Density (mW/cm2)
0.052 0.053 0.051
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Absolute Maximum Ratings Operating Conditions
Supply Voltage..........................-0.3Vto4.0V(Max)
StorageTemperature(Note4).................. -20
oCto85
oC
TemperatureRange........................ 0
oC≤ TA≤70oC
Supply Voltage Range . .........................3.0Vto3.6V
Caution: These are the absolute maximum ratings for the PC Card product. Exceeding these limits could cause permanent damage to the card.
NOTE:
4. All temperature references refer to ambient conditions.
Electrical Specifications Test Conditions: Supply Voltage (VCC) = 3.3V, Ambient Temperature (TA)=25
oC,
Unless Otherwise Specified
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
CURRENT CONSUMPTION
Initializatoin Current ICC - 145 180 mA
Average Current
(With Power Saving Mode) (Note 5)
ICC -TBD - mA
Continuous Transmit Mode ICC - 325 380 mA
Continuous Receive Mode ICC Receiving Valid Packets - 200 225 mA
Standby (Note 5) ICC -TBD - mA
PC CARD LOGIC LEVELS
Input HIGH Voltage VIH VCC=Max, Min 0.7VCC -- V
Input LOW Voltage VIL VCC=Min, Max - - 0.3VCC V
Output HIGH Voltage VOH OL =2mA,V
CC=Min 0.9VCC 2.6 - V
Output LOW Voltage VOL IOL =2mA,V
CC=Min - 0.05 0.1VCC V
Input Leakage Current IIVCC=Max, Input=0V or VCC 0.100 1.0 µA
PC CARD LOADING CAPACITANCE
Input Capacitance CIN - 5 10 pF
Output Capacitance COUT - 5 10 pF
ENVIRONMENTAL SPECIFICATIONS
Vibration Vib 10 to 2000Hz, VCC =0 - - 15 G
Shock Shock - - 50 G
Drop Drop - - 75 cm
Torque T 10oMax - - 1.236 N-m
ESD ESD Non-Operating - - 1500 V
X-RAY X-RAY - - 10 Roentgen
UV UV Wavelength 254nm - - 15K µW/cm2
Humidity RH Method 106E Mil-Std 202 - - 98 %
EMI EMI - - 1K Oersted
RF SYSTEM SPECIFICATIONS
Transmitter Power Output Pout - +11.5 - dBm
EIRP EIRP @ -30 dB Side Lobes - 16 - 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. How-
ever, 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
Receive Sensitivity RX_S 5.5Mbps, 8% PER - -88 - dBm
11Mbps, 8% PER - -84 - dBm
Maximum Receive Level RX_MAX PER <8% -4 - - dBm
Third Order Intercept Point (Input) IIP3_90 -90 dBm input - TBD - dBm
IIP3_25 -25 dBm input - TBD - dBm
Carrier Supression TX_sup Test Mode - -42.5 - dB
Image Rejection IR PER <8% - 60 - dB
IF Rejection IFR PER <8% 60 66.5 - dB
Adjacent Channel Rejection ACR PER <8% (Note 6) - 60 - dB
Data Rate (Physical Layer) Rate - 1, 2, 5.5
and 11
- Mbps
NOTES:
5. Refer to Application Note “PRISM Power Management Modes” AN9665 [5].
6. The adjacent channel measurement is carried out on two channels separated by 25MHz (5 channels).
Electrical Specifications Test Conditions: Supply Voltage (VCC) = 3.3V, Ambient Temperature (TA)=25
oC,
Unless Otherwise Specified (Continued)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS