ISL3880 Datasheet, PDF (1/1 Pages) Intersil Corporation – Wireless LAN Integrated Medium Access Controller with Baseband Processor

®
PRELIMINARY
Data Sheet
Wireless LAN Integrated Medium Access
Controller with Baseband Processor
The Intersil ISL3880 Wireless LAN
Integrated Media Access Controller
with Baseband Processor is part of
the PRISM GTi™ radio chipset. The
ISL3880 directly interfaces with the Intersil’s ISL3680 Direct
Conversion Transceiver with AGC and synthesizer. Adding
Intersil’s ISL3090 10GHz VCO and Intersil’s ISL3980 Power
Amp completes an end-to-end WLAN Chipset solution for the
2.4GHz 802.11b/g standards. The 802.11Protocol is
implemented in firmware to provide for custom WLAN
solutions.
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
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 Multiplexing (OFDM)
modulated with BPSK, QPSK, 16 QAM, or 64 QAM and a
variety of convolutional coding rates provides 8 selectable
data rates. 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.
Built-in flexibility allows the ISL3880 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 ISL3880 is housed in a thin plastic BGA package
suitable for CardBus or Mini-PCI circuit card applications.
Simplified Block Diagram
A/D
March 2003
ISL3880
FN8054
Features
• Firmware implements the full IEEE 802.11b/g 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,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 from > 800ns
for 6 Mbps to > 100ns for 54Mbps
• Targeted for CCK Multipath Delay Spreads > 90ns at
11Mbps, >200 ns at 5.5 Mbps, and >360ns at 1 and
2Mbps
• Direct interface with the ISL3680 Direct Conversion
Transceiver
Applications
• High Data Rate Wireless LAN Systems Targeting the IEEE
802.11b/g Standards.
• Cardbus32 Wireless LAN Adapters
• Mini-PCI Wireless LAN Cards
• 3V PCI Wireless LAN Adapters
Ordering Information
PART
NUMBER
ISL3880IK
ISL3880IK-TK
TEMP.
RANGE (°C)
-40 to 85
-40 to 85
PACKAGE
256 Lead BGA
Tape and Reel
PKG. NO.
V256.17x17A
D/A
ISL3880
SRAM
1
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 © Intersil Americas Inc. 2002. All Rights Reserved, Microsoft® and Windows® are registered trademarks of Microsoft Corporation.,
PRISM GTi is a trademark of Intersil Americas Inc., PRISM and design is a trademark of Intersil Americas Inc.