AT76C503A ATMEL Corporation, AT76C503A Datasheet

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AT76C503A

Manufacturer Part Number
AT76C503A
Description
Manufacturer
ATMEL Corporation
Datasheet

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Features
Block Diagram
IEEE 802.11b-compliant Wireless Standard
Wireless LAN MAC Unit with ARM7TDMI
Integrated 128-byte Transmit and 128-byte Receive FIFOs, for Wireless MAC Layer
Functions
Delivers Standard Wireless Networking to Any Host that Supports a Full-speed
(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
External Memory
Internal Memory
Interface
WEP
USB Interface
RISC Processor
Timers
ARM7TDMI
Wireless Physical
Attachment Interface
Controller
Interrupt
Note: This is a summary document. A complete document is
available under NDA. For more information, please contact your
local Atmel sales office.
Decoder/
Arbiter/
Bridge
Universal Serial
Bus 11-megabit
WLAN Media
Access
Controller
AT76C503A
Summary
Rev. 1949CS–WLAN–06/02
1

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AT76C503A Summary of contents

Page 1

... 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 Block Diagram WEP USB Interface External Memory ...

Page 2

... Universal Serial Bus (USB) specification and can control a variety of wireless physical interfaces. The AT76C503A chip contains a USB interface, a MAC control unit, and a PAI. The PAI supports 5.5- and 11-Mbit WLAN physical interfaces and the IEEE 802. Mbps) direct-sequence spread spectrum and frequency-hopping spread spectrum physical interfaces, providing flexibility to end users ...

Page 3

... Atmel Corporation 2002. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein ...

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