AT76C520 Datasheet, PDF (1/4 Pages) ATMEL Corporation – Network Processor

Features
• Routing Functions Running on ARM946ES^™ Interworking Processor with 8K Data
Cache and 8K Instruction Cache Memory
• Two Ethernet 10/100T-Base MAC Units with MII Interface to External PHY
• Maximum Sustainable Wired Bandwidth: 200Mbs (Half Duplex) or 400 Mbs (Full
Duplex)
• WLAN ARM7TDMI^™ with Direct Access to Communication Peripherals
• WLAN Hardware MAC Block (WHMB) Controlled by ARM7^®, Supports 802.11a/b/g MAC
Functions and Provides Serial or Parallel Interface to External 802.11 PHYs
• Atmel Common Memory Bus Architecture (COMBA) Guarantees No Bottleneck when
All Communication Peripherals are Concurrently Used
• Hardware Security Accelerators Attached to the Common Bus Offer Instantaneous
Encryption/Decryption and Authentication Support for the Following Algorithms:
– CCM/CTR/CBC Modes of Advanced Encryption Standard (AES)
– IPSEC Block Supports DES/3DES and Hash Functions (MD5, SHA-1)
– TKIP
– RC-4, WEP 64/128 Bit-Key (Part of the WHMB)
• PCI Bus Interface (Master/Slave) Compliant with PCI v 2.2
• SPI Master/Slave Interface, UART, and Watchdog Timer Interface
• UTOPIA Level 1 or 2 Interface Supporting up to 3 PHYs
• Two USB Full-speed (12 Mbps) Ports
• 24 GPIOs Can Be Configured to Provide Specific Functions such as UART Interface
wWith Full Modem Control Signaling or 8-bit SRAM/ Flash Interface
• 32-bit SDRAM Interface
• 32-bit SRAM Interface
• 1.8 Volt Core Voltage Supply
• 3.3 Volt I/O Voltage Supply
• 324-pin BGA package
Network Processor Interfaces
PCI/Cardbus
Master/Slave
GPIOs
USB
(Host)
Network
Processor
AT76C520
Summary
802.11
(a/g/b)
PHY
AT76C520
SPI Connection
UART Connection
ETH
PHY
PCMCIA
Host
SRAM/
Flash
Utopia
L1/2
SDRAM
5643AS–WLAN–12/04
Note: This is a summary document. A complete document is
available under NDA. For more information, please contact
your local Atmel sales office.