S E M I C O N D U C T O R
PRISM1BRD
OEM Wireless Local Area Network PC Card
TM
July 1997
Features
• FCC Certified Under Part 15 to Operate in 2.4GHz ISM
Band
• Support for 1 and 2 Megabit Per Second (MBPS) Data
Rates
• Supports the lEEE802.11 Direct Sequence Specifica-
tion
• Windows 95™ NDlS3 and Windows 3.1™ NDIS2 Net-
work Drivers Available (ODI Network Drivers Planned)
• Integrated Microstrip Antenna
• Microcode/BIOS are Contained in Programmable
Nonvolatile Flash Memory
• Radio Range of 300 Feet in an Indoor Environment
(Note 2)
• Completely Covered Assembly is Designed to Fully
Support PCMCIA’s Defined Mechanical and Environ-
mental Stress Conditions
• Intelligent Power Control, Including Low Power
Standby Mode.
Description
The Harris OEM WLAN PC Card
(Note 1) is a complete wireless
high speed modem utilizing the
Harris Prism
TM
Direct Sequence
Spread Spectrum Wireless Transceiver chip set. This card is
made available to OEM’s (Original Equipment Manufacturers)
intending to private label or integrate the product. It provides a
sophisticated turnkey solution of hardware and software to sys-
tem providers or integrators requiring wireless data communi-
cations capability and is ideal for integration into computer
platforms.
Supporting the IEEE 802.11 network specification for Direct
Sequence Spread Spectrum DSSS signaling the card is pack-
aged in a PCMCIA Type II extended cover set and sold in stan-
dard packs of 50 units. Radio design evaluation can be
conducted by using PRISM1KIT-EVAL (PCMCIA card with an
open cover set and SMA connector output, two cards per kit) or
network performance may be evaluated by using
WLANKITPR1-EVAL (PCMCIA card with cover set and inte-
grated antenna, 2 cards per kit). The card provides data rates
up to 2 MBPS. Outdoor line of sight range in excess of 1000
feet has been demonstrated and indoor range of 300 feet,
depending on environment, is achievable. Interoperable Access
Points are available from a number of suppliers, enabling a total
wireless network solution.
NOTES:
1. Throughout this document, all references to ‘PC Card’, ‘WLAN
adapter’, ‘adapter’, or ‘card’ refer to a covered card assembly con-
forming to the mechanical size specifications of the PCMCIA Stan-
dard Release 2.0, Type Il Extended (5.0mm) definition.
2. The range will vary in different operating environments due to effects
such as building construction.
Ordering Information
PART NUMBER
PRISM1BRD
WLANKITPR1-EVAL
DESCRIPTION
OEM WLAN PC CARD
OEM WLAN EVALUATION KIT
CARDS
PER
SET
50
2
Packaging
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
PRISM™ and the PRISM™ logo are trademarks of Harris Corporation.
1
Copyright
©
Harris Corporation 1997
File Number
4289
PRISM1BRD
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 and ETSI in Europe (refer to table 3). The
Card will also operate with reduced performance (due to fil-
ter selection) on channel 12, specified for use in Japan.
Radio Transmitters must be certified in a country prior to
use. Refer to table 4 for a list of countries and agencies that
have approved the PRISM1BRD for operation.
The Harris Prism Chip Set and AMD PCNet Mobile allows
for high level integration allowing 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 net-
working 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 por-
tal, the wireless LAN can be easily connected into an exist-
ing wired LAN, allowing for easy expansion of the service.
A good starting place for people who want to know what
IEEE802.11 is, should try Tech Brief TB337 “A Brief Tutorial
on Spread Spectrum and Packet Radio”. For a more detailed
description of radio operation, please refer to “PRISM
TM
2.4GHz Chip Set” datasheet File Number 4063 and
“PRISM
TM
DSSS PC Card Wireless LAN Description” Appli-
cation Note AN9624. For more specific software questions,
refer to AN3639 “Harris PRISM Wireless LAN Network Con-
nectivity and Utility SW” and AN9666 “Wireless LAN Evalua-
tion Kit SW Installation and Usage”.
• 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
• Probe Generation
• Beacon Generation in an Ad-Hoc Network
• Probe Response Generation in an Ad-Hoc Network
Card Information Structure
The standard Harris WLAN PC Card will be supplied with the
following information embedded in the CIS. It should be
noted that in most systems this information is displayed
when the card is inserted. Customization of the CIS for spe-
cific customer requirements is available upon request, to
enable customer information to be displayed when the card
is inserted.
TABLE 1.
FUNCTION NAME
Manufacturer’s ID
Function ID
Product Revision
Manufacturer
Product
00
Network Adapter
5
AMD
AM79C930
CONTENT
The MAC Protocol Handler
(AMD PCNetMobile) (AM79C930)
The PCNetMobile device (AM79C930) and its firmware are
responsible for running the 802.11 protocol in the WLAN
card. This section describes the features of IEEE 802.11 that
are implemented. Further information can be obtained from
the following documents:
1. AMD PCNetMobiIe WLAN Controller, Firmware Overview
(available from AMD)
2. Firmware Interface Specification for IEEE 802.11/D5
(available from AMD)
Contact AMD’s web site:
http://www.amd.com/products/npd/npd.html
select * Available Literature
or
* PCnet Family Drivers
The functions supported by the STA (station) Firmware are:
• DCF (Distributed Coordination Function)
• CSMA/CA (Carrier Sense Multiple Access with Collision
Avoidance)
• Random Backoff
PROG
LOT
Network Driver Software
The Harris OEM WLAN PC Card will be supplied with
NDlS2, NDIS3 and ODI network drivers. These drivers will
be tested with the following network operating systems:
TABLE 2. SOFTWARE COMPATIBILITY TESTING
MANUFACTURER
Microsoft
TITLE
Windows for Work
Groups
Windows 95
Windows NT
Netware
OS2
VERSION
3.11
DRIVER
NDlS2
Microsoft
Microsoft
Novel
IBM
NDlS3
NDlS3
ODI
ODI
Contact the factory for latest software status or visit our
PRISM web site: http://www.semi.harris.com/prism.html
2
PRISM1BRD
IEEE 802.11 International Agreement and
Frequency Assignments
The IEEE802 LAN committee has forged an international
agreement providing for wireless data communication stan-
dards for the frequency range of 2.4GHz to 2.4853GHz, 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, interoper-
able WLAN equipment, of which PRISM1BRD is a prime
example.
There are 11 channels specified by the FCC in the 2.4GHz
to 2.4853GHz range, and one channel in the 2.471GHz to
2.497GHz range, for operation in Japan. The ETSl (Euro-
pean) regulatory body conforms to the USA (FCC) channel
assignments with the exceptions of channels 1 and 2 as
shown in Table 3.
The available channels of operation in the 2.4GHz to
2.4853GHz and 2.471GHz to 2.497GHz ranges are as follows:
TABLE 3.
CHANNEL
ID
1
2
3
4
5
6
7
8
9
10
11
12
FCC CHANNEL
FREQUENCIES
2412MHz
2417MHz
2422MHz
2427MHz
2432MHz
2437MHz
2442MHz
2447MHz
2452MHz
2457MHz
2462MHz
N/A
ETSI CHANNEL
FREQUENCIES
N/A
N/A
2422MHz
2427MHz
2432MHz
2437MHz
2442MHz
2447MHz
2452MHz
2457MHz
2462MHz
N/A
JAPAN
FREQUENCY
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
2484MHz
Warranty
The Harris WLAN PC Card product is covered by a one year
manufacturing warranty. Operation of the WLAN PC Card
outside of the maximum ratings detailed above will make the
warranty void.
Agency and Regulatory Body Approvals
The WLAN PC Card will comply to the following standards:
TABLE 4.
COUNTRY
USA
APPROVAL
FCC part 15,
Sec. 15.247,
Sec. 15.107 and
15.109
ICAN RSS-210
ETSI 300.328 Nov 96
EMC prETS 300.826
NOTES
Approved for
Intentional Radiators
Computer Peripheral
Canada
Europe
Approved
Planned
NOTES:
1. The Harris FCC Identification Number is: MRF13316C2
2. The IC Approval Number is: CAN2722102478
3
PRISM1BRD
Absolute Maximum Ratings
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.0V (Max)
Storage Temperature (Note 3) . . . . . . . . . . . . . . . . . . -20
o
C to 65
o
C
NOTE:
3. All temperature references refer to ambient conditions.
Caution: These are the absolute maximum ratings for the PC Card product. Exceeding these limits could cause permanent damage to the card.
Operating Conditions
Operating Temperature Range . . . . . . . . . . . . . . . . 0
o
C
≤
T
A
≤
55
o
C
Supply Voltage Range. . . . . . . . . . . . . . . . . . . . . . . . 4.75V to 5.25V
Electrical Specifications
PARAMETER
CURRENT CONSUMPTION
Test conditions supply voltage: 5V
±5%,
T
A
= 25
o
C
SYMBOL(UNIT)
MIN
TYP
MAX
COMMENTS
Average Current
(Without Power Saving Mode) (Note 4)
Average Current
(With Power Saving Mode) (Note 4)
Continuous Transmit Mode
Continuous Receive Mode
Standby (Note 4)
PC CARD LOGIC LEVELS
Input HIGH Voltage
Input LOW Voltage
Output HIGH Voltage
Output LOW Voltage
I
CC
(mA)
I
CC
(mA)
I
CC
(mA)
I
CC
(mA)
I
CC
(mA)
-
290
-
2% Transmit 98% Receive
-
60
-
2% TX 90% Standby 8% RX
-
-
-
488
287
30
-
-
-
Estimated
V
IH
(V)
V
IL
(V)
V
OH
(V)
V
OL
(V)
2.4
0.0
2.8
-
-
-
-
-
-
-
-
-
V
CC
+0.2
0.8
V
CC
0.45
0.45
0.45
-0.4mA lLOAD
4mA ILOAD
12mA lLOAD
24mA ILOAD
PC CARD LEAKAGE CURRENT
Input Leakage Current
PC CARD LOADING CAPACITANCE
Input Capacitance
Output Capacitance
ENVIRONMENTAL SPECIFICATIONS
Vibration
Drop
Torque
ESD
XRAY
UV
Humidity
EMI
NOTE:
4. Refer to Application Note “PRISM™ Power Management Modes” AN9665.
(G)
(cm)
(Lb/Ft
2
)
(V)
(Roentgen)
(µW/cm)
RH(%)
(Oersted)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
55
65
15
75
11
1500
10K
15K
Wavelength 254nm
10
o
Max
Non-Operating
10 to 2000Hz, V
CC
= 0
C
IN
(pF)
C
OUT
(pF)
-
-
-
-
12
12
L
IN
(µA)
-10
-
10
4
PRISM1BRD
Electrical Specifications
PARAMETER
RF SYSTEM SPECIFICATION
Antenna Gain
ElRP
Receive Sensitivity
Maximum Receive Level
Third Order Intercept Point (Input)
Image Rejection
IF Rejection
Adjacent Channel Rejection
(dBi)
(dBm)
(dBm)
(dBm)
(dBm)
(dB)
(dB)
(dB)
-
-
-
-
-
-
-
-
2.5
20
-88
0
-24
65
80
63
(Note 5)
8
1 and 2
1.3
-
-
-
-
-
-
-
-
PER <8%
PER <8%
PER <8%
8% PER, 2mB/s
PER <8%
MAX
Test conditions supply voltage: 5V
±5%,
T
A
= 25
o
C
(Continued)
SYMBOL(UNIT)
MIN
TYP
MAX
COMMENTS
Noise Figure RF Front End
Data Rate (Physical Layer)
Data Rate (PC to PC)
NOTE:
(dB)
(Mb/s)
(Mb/s)
-
-
-
-
-
-
DQPSK 2Mb mode
5. The adjacent channel measurement is carried out on two channels specially separated by 25MHz (5 channels).
5
京公网安备 11010802033920号
EEWORLD
