ISL3893 Datasheet, PDF (1/1 Pages) International Rectifier – Wireless LAN Integrated Medium Access Controller with Baseband Processor

®
PRELIMINARY
Data Sheet
June 2003
ISL3893
FN8062
Wireless LAN Integrated Medium Access
Controller with Baseband Processor
The Intersil ISL3893 Wireless
System on Chip (WiSOC™) is part of
the PRISM Duette™, Dual Band
radio chipset. The ISL3893 directly
interfaces with the Intersil’s ISL3690 Dual Band Direct
Conversion transceiver. Adding Intersil’s ISL3090 10GHz VCO
and Intersil’s ISL3990 Dual Band Power Amp completes an end-
to-end WLAN Chipset solution providing both 5 GHz 802.11a
and 2.4GHz 802.11b/g access point capability. The 802.11
protocol is implemented in firmware to allow custom WLAN
solutions.
Firmware implements the full IEEE 802.11 Wireless LAN
MAC protocol. It supports BSS under Distributed
Coordination Function (DCF). This allows the ISL3893 to
serve as a self hosted Access Point.
Orthogonal Frequency Division Multiplexing (OFDM)
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 4 additional selectable data rates at 2.4GHz.
Built-in flexibility allows the ISL3893 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 ISL3893 is housed in a thin plastic BGA package.
Simplified Block Diagram
A/D
BB
PROCESSOR
MAC
D/A
ISL3893
EXTERNAL MEMORY
INTERFACE
Features
• Firmware implements the full IEEE 802.11a/b/g Wireless
LAN MAC protocols
• Internal WEP Engine allows 64 or 128 bit Encryption
• AES Hardware Accelerator
• PC133 SDRAM Interface
• Asynchronous Flash Memory Interface
• On-Chip Boot ROM
• Instruction and Data Tightly Coupled Memory, Instruction
and Data Cache
• Firmware controlled antenna diversity
• Data Rates . . . . . . . . . . . 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36,
48, and 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.
• Two Medium Independent Interfaces (MII) for ethernet
use.
• Mini-PCI Host Capability.
Applications
• High Data Rate Wireless LAN Systems Targeting the IEEE
802.11a and g Standards.
• Wireless Routers.
• Self Hosted Access Point with the capability to host a mini-
PCI daughter card for additional functionality.
Ordering Information
PART
NUMBER
ISL3893IK
ISL3893IK-TK
TEMP. RANGE
(°C)
PACKAGE
-40 to 85 316 Lead BGA
-40 to 85 Tape and Reel
PKG. DWG.
#
V316.17x17
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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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.