The Intersil HFA3842A Wireless LAN Medium Access Controller is part of the PRISM® 2.4GHz radio chip set. The HFA3842A directly interfaces with the Intersil HFA386x family of Baseband Processors, offering a complete end-to-end chip set solution for wireless LAN products. Protocol and PHY support are implemented in firmware to allow custom protocol and different PHY transceivers.

Features
• IEEE802.11 Standard Data Rates: 1, 2, 5.5 and 11Mbps
• Part of the Intersil PRISM Wireless LAN Chip Set
• Full Implementation of the MAC Protocol Specified in IEEE Standards 802.11-1999 and 802.11b
• PCMCIA Host Interface Supports Full 16-Bit Implementation of PC Card 16 (1995), also ISA PNP with Additional Chip
• Host Interface Provides Dual Buffer Access Paths
• External Memory Interface Supports up to 4M bytes RAM
• Internal Encryption Engine Executes IEEE802.11 WEP
• Low Power Operation; 25mA Active, 8mA Doze, <1mA Sleep
• Operation at 2.7V to 3.6V Supply
• 5V Tolerant Host Interface Input/Outputs
• 128 Pin LQFP Package Targeted for Type II PC Cards
• IEEE802.11 Wireless LAN MAC Protocol Firmware and Microsoft® Windows® Software Drivers
• Pin for Pin Replacement for the HFA3841 Supporting all Functions and operations of the HFA3841

Applications
• High Data Rate Wireless LAN
• PC Card Wireless LAN Adapters
• USB Wireless LAN Adapters
• PCI Wireless LAN Cards (Using Ext. Bridge Chip)
• Wireless LAN Modules
• Wireless LAN Access Points
• Wireless Bridge Products
• Wireless Point-to-Multipoint Systems
• ISA, ISA PNP WLAN Cards