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(12 Mbps) USB Interface
Glueless SRAM Interface for All MAC Operations, Supporting up to 1M Byte of External
Memory
Integrated 6K x 32-bit Internal SRAM, Used for Fast Program Code Execution and
Temporary Storage of Data
Glueless Flash Memory Interface, Supporting up to 1M Bytes of Nonvolatile Memory
for Permanent Storage of Program Code
Wired Equivalent Privacy (WEP) in Hardware Supporting 64-bit and 128-bit Encryption
The Integrated Physical Attachment Interface (PAI) Fully Supports Direct-sequence
Spread Spectrum and Frequency-hopping Spread Spectrum Physical-layer Interfaces
The WLAN and Inter-networking Functions can be Changed and Updated Easily to New
Requirements Since They are Implemented in Micro Code
Supports 11 Mbps Data Rate with Automatic Fallback to 5.5, 2 and 1 Mbps
128-lead, 14 x 14 mm TQFP Package
Low-voltage Operation (3.3V)
Internal ROM Contains Hardwired USB Control Software for Automatic Configuration
when Card is Inserted in the USB Slot
Device Firmware Upgrade is also Included in the Internal ROM for Downloading
Firmware into Internal SRAM
Offers SPI Interface and Five GPIO Pins
AT76C503A Offers the Option to Download the Whole Code from SPI Flash
Universal Serial
Bus 11-megabit
WLAN Media
Access
Controller
AT76C503A
Summary
Block Diagram
WEP
USB Interface
Wireless Physical
Attachment Interface
External Memory
Interface
Internal/External Memory
Interface Controller
ARM7TDMI
Decoder/
Arbiter/
Bridge
Internal Memory
Timers
Interrupt
Controller
Rev. 1949CS鈥揥LAN鈥?6/02
Note: This is a summary document. A complete document is
available under NDA. For more information, please contact your
local Atmel sales office.
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ATMEL
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