®
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 Duette™, 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
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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 Duette™ 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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