ISL3877IK Intersil Corporation, ISL3877IK Datasheet

ISL3877IK

Manufacturer Part Number

ISL3877IK

Description

Manufacturer

Intersil Corporation

Datasheet

1.ISL3877IK.pdf (1 pages)

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Wireless LAN Integrated Medium Access

Controller with Baseband Processor

The ISL3877 directly interfaces with the Intersil’s ISL3787

1.2GHz IF converter with AGC and synthesizer. Adding

Intersil’s ISL3687 5GHz RF/IF converter with integrated

synthesizer and a Power Amp completes an end-to-end WLAN

Chipset solution for the 802.11a 5GHz standard. Protocol and

PHY support are implemented in firmware thus, supporting

custom WLAN solutions.

Firmware implements the full IEEE 802.11a 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

handled 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.

Orthogonal Frequency Division Multiplex (OFDM) combined

with BPSK through 64 QAM modulation of the individual

carriers and a variety of convolutional coding rates provides

8 selectable data rates.

Built-in flexibility allows the ISL3877 to be configured for a

range of applications. The MAC is based on the ARM 946E

processor core that offers a wide variety of code

development support tools.

The ISL3877 is housed in a thin plastic BGA package

suitable for CardBus or Mini-PCI circuit card applications.

Simplified Block Diagram

ISL3877

A/D

D/A

The Intersil ISL3877 Wireless LAN

Integrated Media Access Controller

with Baseband Processor is part of

the PRISM® 5, 5GHz radio chipset.

IFFT

FFT

SRAM

Data Sheet

PRISM® is a registered trademark of Intersil Americas Inc., PRISM and design is a trademark of Intersil Americas Inc.

1-888-INTERSIL or 321-724-7143

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Features

• Firmware implements the full IEEE 802.11a Wireless LAN

• Internal WEP Engine allows 64 or 128 bit Encryption

• Start Up Modes Allow the PCI Configuration Registers or

• On chip SRAM Memory

• Low Frequency Crystal Oscillator to Maintain Time and

• Complete OFDM Baseband Processor and 802.11a MAC

• Firmware controlled antenna diversity

• Data Rates . . . . . . . . 6, 9, 12, 18, 24, 36, 48, and 54Mbps

• RF Modulation Method. . . . . . . . . . . . . . . . . . . . . . .OFDM

• Baseband modulations. . BPSK, QPSK, 16 QAM, 64 QAM

• Convolutional coding and interleaving on all rates

• Targeted for Multipath Delay Spreads 100nS at 6Mbps

• Direct interface with the ISL3787 IF Converter

• Balanced differential interconnects to TX and RX

Applications

• High Data Rate Wireless LAN Systems Targeting the

• Cardbus32 Wireless LAN Adapters

• Mini-PCI Wireless LAN Cards

• 3V PCI Wireless LAN Adapters

Ordering Information

ISL3877IK

ISL3877IK-TK

MAC protocol

the Card Bus Card Information Structure to be Initialized

from a small external Serial EEPROM. This allows

Firmware to be Downloaded from the Host

Allow High Frequency Clock Source to Power off During

Sleep Mode

and 100ns at 54Mbps

IEEE 802.11a Standard

NUMBER

PART

Intersil (and design) is a registered trademark of Intersil Americas Inc.

April 2003

TEMP. RANGE

-40 to 85

(°C)

Tape and Reel

192 Lead BGA

PACKAGE

ISL3877

FN8004.1

V192.14x14

PKG. NO.

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