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ISL3871IK18-TK

更新时间: 2024-11-24 11:11:59
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英特矽尔 - INTERSIL 控制器无线无线局域网
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1页 24K
描述
Wireless LAN Integrated Medium Access Controller with Baseband Processor

ISL3871IK18-TK 数据手册

  
ISL3871IK18, ISL3871IN18  
®
Data Sheet  
Ma rc h 2003  
FN8040.1  
Wireles s LAN Integrated Medium Acces s  
Controller with Bas eband Proces s or  
Features  
• USB host interface supports USB V1.1 at 12Mbps.  
The Intersil ISL3871 Wireless LAN  
Integrated Medium Access Controller  
with Integrated Baseband Processor  
• New Start up modes allow the PCMCIA 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  
is part of the PRISM® 2.4GHz radio chipset. The ISL3871  
directly interfaces with the Intersil’s Zero-IF  
QMODEM(ISL3684). Adding Intersil’s Power Amp (ISL3984)  
offers the designer a complete end-to-end WLAN chipset  
solution. Protocol and PHY support are implemented in  
firmware, thus supporting customization of the WLAN  
solution.  
• 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  
• Improved performance of internal WEP engine  
• Improvements to debug mode support tracing execution  
from on chip memory  
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.  
• 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  
• Available in two packages:  
- Ultra small BGA package. . . . . . . . . . . . . . . 14 x 14mm  
- Large LQFP flat pack for easy board layout  
• Modulation methods . . . . . . . .DBPSK, DQPSK, and CCK  
• Supports full or half duplex operations  
• On-chip A/D and D/A converters for I/Q data, AGC, and  
adaptive power control  
The ISL3871 has on-board A/D’s and D/A for analog I and Q  
inputs and outputs, for which the ISL3684 Zero-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.  
• Targeted for multipath delay spreads 100ns at 11Mbps,  
250ns at 5.5Mbps  
• Supports short preamble and antenna diversity  
Applications  
• PC Card Wireless LAN Adapters  
• USB Wireless LAN Adapters  
• PCN / Wireless PBX / Wireless Local Loop  
Built-in flexibility allows the ISL3871 to be configured  
through a general purpose control bus, for a range of  
applications. The ISL3871 is housed in either a thin plastic  
BGA package or a TQFP flat pack suitable for PCMCIA  
board applications.  
• 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  
• ISA, ISA PnP WLAN Cards  
The ISL3871 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 PCMCIA and USB.  
Ordering Information  
TEMP.  
PACKAGE  
PACKAGE  
PART #  
o
PART NUMBER RANGE ( C) DESCRIPTION  
ISL3871IK18  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
192 BGA  
V192.14x14  
ISL3871IK18-TK  
ISL3871IN18  
Tape and Reel 1000 Units /Reel  
208 LQFP Q208.28x28A  
Tape and Reel 500 Units/Reel  
ISL3871IN18-TS  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright © Intersil Americas Inc. 2003. All Rights Reserved  
PRISM® is a registered trademark of Intersil Americas Inc. PRISM and design is a trademark of Intersil Americas Inc.  

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