AT76C509 Datasheet, PDF (1/3 Pages) ATMEL Corporation – Ethernet to Wireless Bridge Low-Cost Access Point

Features
• Integrates the IEEE 802.11 Physical Layer (Baseband) and the Medium Access
Controller (MAC) for Supporting Standard Rates up to 11 Mbps
• Supports Antenna Diversity Algorithm, Automatic Receive Gain Control, Transmit Gain
Control, Transmit Filter for Japanese Regulatory and Differential or Single-ended I- and
Q-Baseband Signals
• Integrates 160 KBytes of SRAM which are Organized in Five Banks of 32 KBytes each,
Offering the Flexibility for Individually Configuring Each of Them as Program or Data
Memory
• Zero Wait States for Program Execution
• Fast Data Transfers through DMA Channels
• Low Power ARM7TDMI^® RISC Processor
• Integrates a Bootstrap ROM Supporting Firmware Uploading from a Serial DataFlash^®
• Glueless Parallel Flash Memory Interface, Supporting up to 16 MBytes of Nonvolatile
Memory
• Glueless External SRAM Interface for all MAC Operations, Supporting up to 16 MBytes
of External Memory
• Wired Equivalency Privacy (WEP) in Hardware Supporting 64-bit and 128-bit Keys
• Hardware Implementation of TKIP
• Hardware Implementation of AES Encryption Supporting Various Modes
(CCM/CTR/CBC)
• The WLAN Functions Can Be Easily Changed or Updated to New Requirements Since
They are Implemented in Microcode
• Supports 11 Mbps Rates with Automatic Fallback to 5.5, 2 and 1 Mbps
• SPI Interface and 12 GPIO Pins
• Supports Two Extension Interfaces: A Full-Speed USB 2.0 Compliant Device and a
Slave PCI Device
• 208-ball LFBGA Package
• Low-voltage 1.8V Operation
Block Diagram
SPI
Interface
PCI/Mini PCI/USB
Extension Interface
Timers
Boot ROM
External
Memory
Interface
Internal
Memory
(SRAM)
Ethernet
Processor
ARM7TDMI
802.11b
Baseband
MAC Support
Unit (MSU)
Decoder/
Arbiter/
Bridge
Interrupt
Controller
Encryption/
Decryption
Block
Ethernet to
Wireless Bridge
Low-Cost
Access Point
AT76C509
Summary
2392AS–WLAN–01/04
Note: This is a summary document. A complete document
is available under NDA. For more information, please con-
tact your local Atmel sales office.