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(R)
ISL3886
Data Sheet July 2003 FN8070
Wireless LAN Integrated Medium Access Controller with Baseband Processor
The Intersil ISL3886 Wireless LAN Integrated Media Access Controller with Baseband Processor is part of the PRISM DuetteTM, Dual Band radio chipset. The ISL3886 directly interfaces with Intersil's ISL3692 Dual Band Direct Conversion transceiver. Adding Intersil's ISL3092 10GHz VCO and Intersil's ISL3992 Dual Band Power Amp completes an end-to-end WLAN Chipset solution compliant with 802.11a/b/g/h/i/j standards. The 802.11 protocol is implemented in firmware supporting custom WLAN solutions. Software 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). 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 Multiplexing (OFDM) of 52 sub-carriers modulated with BPSK, QPSK, 16QAM or 64QAM and a variety of convolutional coding rates provides 8 selectable data rates at 2.4GHz and 5GHz. Differential phase shift keying modulation schemes, DBPSK and DQPSK with data scrambling capability along with Complementary Code Keying provide an additional 4 selectable data rates at 2.4GHz. Built-in flexibility allows the ISL3886 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 ISL3886 is housed in a thin plastic BGA package suitable for CardBus or Mini-PCI circuit card applications.
Features
* Firmware implements the full IEEE 802.11a/b/g/h/i/j Wireless LAN MAC protocols * Internal WEP Engine allows 64 or 128 bit Encryption * AES Hardware Accelerator * Start-up modes allow the PCI configuration registers or the Card Bus card information structure to be Initialized from a small external serial EEPROM. This allows firmware to be downloaded from the host. * On-chip SRAM memory * A low frequency crystal oscillator can maintain time, which allows the high frequency clock source to be powered off during sleep mode. * Firmware controlled antenna diversity * Data Rates: 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48, & 54Mbps * Modulation . . OFDM with BPSK, QPSK, 16QAM, 64QAM DBPSK, DQPSK, CCK * Convolutional coding and interleaving on all OFDM rates * Targeted for OFDM Multipath Delay Spreads >800ns for 6Mbps, and >100ns for 54Mbps * Targeted for CCK Multipath Delay Spreads >90ns at 11Mbps, >200ns at 5.5Mbps and >360ns at 1 and 2Mbps * Direct interface with the ISL3690 Direct Conversion transceiver * High Data Rate Wireless LAN Systems targeting the IEEE 802.11a and b/g standards. * Cardbus32 Wireless LAN Adapters * Mini-PCI Wireless LAN Cards * 3V PCI Wireless LAN Adapters
Simplified Block Diagram
A/D
Ordering Information
PART NUMBER ISL3886IK ISL3886IK-TK TEMP. RANGE (C) -40 to 85 -40 to 85 PACKAGE 256 Lead BGA Tape and Reel PKG. DWG. # V256.17x17A
BB PROCESSOR MAC
D/A
SRAM ISL3886
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 registered trademark of Intersil Americas Inc. Copyright (c) Intersil Americas Inc. 2003. All Rights Reserved. PRISM(R) is a registered trademark of Intersil Americas Inc. PRISM DuetteTM and PRISM and design are trademarks of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owner.
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