ATMEL AT76C510

Features
• Wireless Interface Following the IEEE 802.11b Standard
• Ethernet MAC Unit (EMU) Interfaces with 10/100-Mbit Ethernet Physical through a
Standard MII Port
• Inter-networking Unit (INWARM) with Integrated ARM7TDMI® RISC Processor Provides
the Bridging Functions between Ethernet and Wireless Interfaces
• WLAN MAC Unit with a Second ARM7TDMI RISC Processor and Integrated 128-byte
Transmit and 128-byte Receive FIFOs, for Wireless MAC Layer Functions
• Glueless SRAM Interface for all MAC Operations, Supporting up to 16M Bytes of
Common External Memory Shared between Both Processors
• Integrated 2 x 6K x 32-bit Internal SRAM Memory Banks, Used for Each Processor’s
•
•
•
•
•
•
Program Code and Data Space
Glueless Flash Memory Interface, Supporting up to 16M Bytes of Nonvolatile Memory
for Permanent Storage of Program Code
Enciphering/Deciphering of Wireless Data On-the-fly Ensures Maximum Privacy
of Data
The Integrated Physical Attachment Interface (PAI), Fully Supports Direct Sequence
Spread Spectrum and Frequency Hopping Spread Spectrum (2 Mbps) Physical-layer
Interfaces
The WLAN and Inter-networking Functions Can Be Changed and Updated Easily to
New Requirements Since They are Implemented in Microcode
3.3V for Core and I/O
128-lead Plastic Quad Flat Pack (PQFP) or Thin Quad Flat Pack (TQFP) Package
Block Diagram
Internal
Memory #2
External
Memory
Interface
Internal
Memory #1
WLAN
ARM Core
(WLANARM)
Decoder/Arbiter/
Bridge #2
AT76C510
VNET-B
Summary
Timers,
Interrupt
Controller #2
Ethernet
Processor
Common Memory
Interface Controller
Inter-networking
ARM Core
(IWARM)
Ethernet to
Wireless
Bridge-on-aChip
Wireless Physical
Attachment
Interface
(WPAI)
Decoder/Arbiter/
Bridge #1
Timers,
Interrupt
Controller #1
Rev. 1650DS–WLAN–01/03
Note: This is a summary datasheet. A complete document is
available under NDA. For more information, please contact your
local Atmel Sales office.
1
Overview
Wireless to Ethernet Bridge (VNET-B) is the Inter-networking device for interconnecting
a Wireless LAN with other Wireless LANs (WLAN) and legacy LANs.
VNET-B based bridges act as Access Points (AP) to the WLAN and communicate packets that are destined outside the WLAN using IP over Ethernet. In case the WLAN user
is mobile, roaming functions are also supported at the VNET-B bridges.
The data transactions over this unified environment are categorized according to the
type of end-to-end devices.
End Stations
Transactions
When two end stations communicate (irrespective to the type of network they belong)
the inter-networking between the different networks should be transparent.
Inter-networking Device
Transactions
The VNET-B device implements all necessary communication protocols for supporting
inter-networking functions, implements logical grouping of users independent of their
physical location and provides secure links by implementing encryption algorithms.
2
AT76C510
1650DS–WLAN–01/03
Atmel Headquarters
Atmel Operations
Corporate Headquarters
Memory
2325 Orchard Parkway
San Jose, CA 95131
USA
TEL 1(408) 441-0311
FAX 1(408) 487-2600
2325 Orchard Parkway
San Jose, CA 95131
TEL 1(408) 441-0311
FAX 1(408) 436-4314
RF/Automotive
Theresienstrasse 2
Postfach 3535
74025 Heilbronn, Germany
TEL (49) 71-31-67-0
FAX (49) 71-31-67-2340
Microcontrollers
Europe
2325 Orchard Parkway
San Jose, CA 95131
TEL 1(408) 441-0311
FAX 1(408) 436-4314
Atmel Sarl
Route des Arsenaux 41
Case Postale 80
CH-1705 Fribourg
Switzerland
TEL (41) 26-426-5555
FAX (41) 26-426-5500
La Chantrerie
BP 70602
44306 Nantes Cedex 3, France
TEL (33) 2-40-18-18-18
FAX (33) 2-40-18-19-60
Asia
Room 1219
Chinachem Golden Plaza
77 Mody Road Tsimshatsui
East Kowloon
Hong Kong
TEL (852) 2721-9778
FAX (852) 2722-1369
ASIC/ASSP/Smart Cards
Japan
9F, Tonetsu Shinkawa Bldg.
1-24-8 Shinkawa
Chuo-ku, Tokyo 104-0033
Japan
TEL (81) 3-3523-3551
FAX (81) 3-3523-7581
1150 East Cheyenne Mtn. Blvd.
Colorado Springs, CO 80906
TEL 1(719) 576-3300
FAX 1(719) 540-1759
Biometrics/Imaging/Hi-Rel MPU/
High Speed Converters/RF Datacom
Avenue de Rochepleine
BP 123
38521 Saint-Egreve Cedex, France
TEL (33) 4-76-58-30-00
FAX (33) 4-76-58-34-80
Zone Industrielle
13106 Rousset Cedex, France
TEL (33) 4-42-53-60-00
FAX (33) 4-42-53-60-01
1150 East Cheyenne Mtn. Blvd.
Colorado Springs, CO 80906
TEL 1(719) 576-3300
FAX 1(719) 540-1759
Scottish Enterprise Technology Park
Maxwell Building
East Kilbride G75 0QR, Scotland
TEL (44) 1355-803-000
FAX (44) 1355-242-743
e-mail
literature@atmel.com
Web Site
http://www.atmel.com
© Atmel Corporation 2003.
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. No licenses to patents or other intellectual property of Atmel are granted
by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical
components in life support devices or systems.
ATMEL ® is the registered trademarks of Atmel.
ARM7TDMI ® is the registered trademark ARM, Ltd.
Other terms and product names may be the trademarks of others.
Printed on recycled paper.
1650DS–WLAN–01/03
xM