at76c505a ATMEL Corporation, at76c505a Datasheet

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at76c505a

Manufacturer Part Number
at76c505a
Description
802.11b Media Access Controller Mac And Baseband With Usb Interface
Manufacturer
ATMEL Corporation
Datasheet
Features
Block Diagram
Integrates the IEEE 802.11b Physical Layer (Baseband) and the Media 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 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
Integrates a Bootstrap ROM Supporting Device Firmware Upgrade (DFU) Protocol and
USB Chapter 9 Compatibility
The Bootstrap Code Supports External SPI EEPROM for the Custom Configuration
Parameters Used during the Device Enumeration Phase as well as Default Parameters
for First Time EEPROM Programming
Glueless Parallel Flash Memory Interface, Supporting up to 128 KBytes of Nonvolatile
Memory
Glueless External SRAM Interface for All MAC Operations, Supporting up to
128 KBytes 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 9 GPIO Pins
144-ball LFBGA Package
Low-voltage 1.8V Core Operation
Boot ROM
Interface
Memory
(SRAM)
External
Memory
Internal
SPI Interface
®
RISC Processor
MAC Support
Unit (MSU)
ARM7TDMI
Baseband
802.11b
Interface
USB
Note: This is a summary document. A complete document is available
under NDA. For more information, please contact your local Atmel sales
office.
Controller
Encryption/
Decryption
Decoder/
Interrupt
Timers
Arbiter/
Bridge
Block
802.11b
Media Access
Controller
(MAC) and
Baseband with
USB Interface
AT76C505A
Summary
Rev. 2389BS–WLAN–07/03
1

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at76c505a Summary of contents

Page 1

... Encryption/ 802.11b Decryption Baseband Block Note: This is a summary document. A complete document is available under NDA. For more information, please contact your local Atmel sales office. 802.11b Media Access Controller (MAC) and Baseband with USB Interface AT76C505A Summary Rev. 2389BS–WLAN–07/03 1 ...

Page 2

... The AT76C505A is a single-chip baseband controller that can handle IEEE 802.11b standard compliant data rates Mbps and provides all processing and func- tionality needed for the MAC protocol of IEEE 802.11b. The AT76C505A is a full speed USB 2.0 compliant device that can support up to four configurable Endpoints (EP) plus one Control EP ...

Page 3

... Fax: (81) 3-3523-7581 Disclaimer: 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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