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ISL3874 Scheda tecnica(PDF) 1 Page - Intersil Corporation

Il numero della parte ISL3874
Spiegazioni elettronici  Wireless LAN Integrated Medium Access Controller with Baseband Processor with Mini-PCI
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Produttore elettronici  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL3874 Scheda tecnica(HTML) 1 Page - Intersil Corporation

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1
TM
File Number
8010
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
ISL3874
Wireless LAN Integrated Medium Access
Controller with Baseband Processor with
Mini-PCI
The Intersil ISL3874 Wireless LAN
Integrated Medium Access Controller
with Integrated Baseband Processor
is part of the PRISM® 2.4GHz radio
chip set. The ISL3874 directly interfaces with the Intersil’s IF
QMODEM (HFA3783). Adding Intersil’s RF/IF Converter
(ICW3685) and Intersil’s Power Amp (HFA3983/4/5) offers
the designer a complete end-to-end WLAN Chip Set
solution. Protocol and PHY support are implemented in
firmware thus, supporting customization of the WLAN
solution.
Firmware implements the full IEEE 802.11 Wireless LAN
MAC protocol. It supports BSS and IBSS operation under
DCF, and operation under the optional Point Coordination
Function (PCF). Low level protocol functions such as
RTS/CTS generation and acknowledgment, fragmentation
and de-fragmentation, and automatic beacon monitoring are
handed without host intervention. Active scanning is
performed autonomously once initiated by host command.
Host interface command and status handshakes allow
concurrent operations from multi-threaded I/O drivers.
Additional firmware functions specific to access point
applications are also available.
The ISL3874 has on-board A/Ds and D/A for analog I and Q
inputs and outputs, for which the HFA3783 IF QMODEM is
recommended. Differential phase shift keying modulation
schemes DBPSK and DQPSK, with data scrambling
capability, are available along with Complementary Code
Keying to provide a variety of data rates. Both Receive and
Transmit AGC functions with 7-bit AGC control obtain
maximum performance in the analog portions of the
transceiver.
Built-in flexibility allows the ISL3874 to be configured
through a general purpose control bus, for a range of
applications. The ISL3874 is housed in a thin plastic BGA
package suitable for mini PCI board applications.
The ISL3874 is designed to provide maximum performance
with minimum power consumption. External pin layout is
organized to provide optimal PC board layout to all user
interfaces including mini PCI.
Features
• Start up modes allow the mini PCI Card Information
Structure to be initialized from a serial EEPROM. This
Allows Firmware to be Downloaded from the Host,
Eliminating the Parallel Flash Memory Device
• Firmware Can Be Loaded from Serial Flash Memory
• Zero Glue Connection to 16-Bit Wide SRAM Devices
• Low Frequency Crystal Oscillator to Maintain Time and
Allow Baseband Clock Source to Power Off During Sleep
Mode
• High Performance Internal WEP Engine
• Debug Mode Support Tracing Execution from On-Chip
Memory
• Programmable MBUS Cycle Extension Allows Accessing
of Slow Memory Devices without Slowing the Clock
• Complete DSSS Baseband Processor
• RAKE Receiver with Decision Feedback Equalizer
• Processing Gain. . . . . . . . . . . . . . . . . . . . .FCC Compliant
• Programmable Data Rate . . . . . . . 1, 2, 5.5, and 11Mbps
• Ultra Small Package. . . . . . . . . . . . . . . . . . 14mm x 14mm
• Single Supply Operation . . . . . . . . . . . . . . . . 2.7V to 3.6V
• Modulation Methods . . . . . . . . DBPSK, DQPSK, and CCK
• Supports Full or Half Duplex Operations
• On-Chip A/D and D/A Converters for I/Q Data (6-Bit,
22MSPS), AGC, and Adaptive Power Control (7-Bit)
• Targeted for Multipath Delay Spreads 125ns at 11Mbps,
250ns at 5.5Mbps
• Supports Short Preamble and Antenna Diversity
Applications
• Enterprise WLAN Systems
• PCI Card Wireless LAN Adapters
• PCN / Wireless PBX / Wireless Local Loop
• High Data Rate Wireless LAN Systems Targeting IEEE
802.11b Standard
• Wireless LAN Access Points and Bridge Products
• Spread Spectrum WLAN RF Modems
• TDMA or CSMA Packet Protocol Radios
Ordering Information
PART
NUMBER
TEMP.
RANGE (oC)
PACKAGE
PART
NUMBER
ISL3874IK
-40 to 85
192 BGA
V192.14x14
ISL3874IK96
-40 to 85
Tape and Reel 1000 Units/Reel
Data Sheet
March 2001
[ /Title
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with
Baseba
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with
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/Autho
/Keyw
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PRISM® is a registered trademark of Intersil Americas Inc. PRISM and design is a trademark of Intersil Americas Inc.


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