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PDF AT76C511 Data sheet ( Hoja de datos )
| Número de pieza | AT76C511 | |
| Descripción | Dual Ethernet to IEEE 802.11b WLAN Bridgeon-on-a-Chip(DEW-B) | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• Wireless Interface Following the IEEE 802.11b Standard
• Two Ethernet MAC Units (EMU) Interfaces with 10/100 Mbits Ethernet Physical Layer
Transceivers through Standard MII Ports
• Dual ARM7TDMI® RISC Processor Architecture
• Inter-networking ARM7TDMI (INWARM) with 16 Kbytes Program and Data Cache
Controls the Ethernet MAC Units and Provides the Bridging Functions between
Ethernet and Wireless Interfaces
• WLAN ARM7TDMI (WLANARM) with a Dedicated 32 Kbytes Program Memory
Coordinates the 802.11b MAC Functionality
• 802.11b MAC Unit with 512-byte Transmit and 128-byte Receive FIFOs
• SDRAM Interface Supporting up to 256 MBytes of External Memory Shared between
Both Processors
• 32-bit DMA Channels Are Used for Data Packet Transfers between the SDRAM and the
MAC Units
• Enciphering/Deciphering of Wireless Data On-the-fly Ensures Maximum Privacy of
Data
• SPI Interface and Eight GPIO Pins that Can Be Used As Slave-Select Pins
• A Bootstrap ROM Is Used in the Initialization Phase by the WLAN ARM® to Execute a
Code Downloading Procedure from an SPI Flash to Its Internal Program Memory
• UART with 16-byte Receive and Transmit FIFO and Programmable Baud Rate up to
921 Kbaud
• Supports 802.1f (IAPP) and Tap-Dance™ (Atmel proprietary roaming protocol)
• 2.5 V for Core and 3.3 V for I/O
• Different Packages, Depending on the Requirements
Block Diagram
Dual Ethernet to
IEEE 802.11b
WLAN Bridge-
on-a-Chip
(DEW-B)
AT76C511
Summary
Inter-networking
ARM Core
(INWARM)
Cache
Memory
External
Memory
Interface
Internal
Memory #1
WLAN
ARM Core
(WLANARM)
Decoder/Arbiter/
Bridge #2
UART
SPI
MAC
Support Unit
(MSU)
Decoder/Arbiter/
Bridge #1
Timers,
Interrupt
Controller #2
Ethernet
Processor 0
Ethernet
Processor 1
Timers,
Interrupt
Controller #1
2383BS–WLAN–01/04
Note: This is a summary document. A complete document
is available under NDA. For more information, please con-
tact your local Atmel sales office.
1 page | ||
| Páginas | Total 3 Páginas | |
| PDF Descargar | [ Datasheet AT76C511.PDF ] | |
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