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參數(shù)資料
| 型號： | SMC91C100 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | FEAST Fast Ethernet Controller |
| 中文描述： | 宴快速以太網(wǎng)控制器 |
| 文件頁數(shù)： | 1/83頁 |
| 文件大小： | 437K |
| 代理商： | SMC91C100 |
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SMC91C100
ADVANCE INFORMATION
FEAST
Fast Ethernet Controller
FEATURES
Dual Speed CSMA/CD Engine (10 Mbps and
100 Mbps)
Compliant with IEEE 802.3 100BASE-T
Specification
Supports 100BASE-TX, 100BASE-T4, and
10BASE-T Physical Interfaces
32 Bit Wide Data Path (Into Packet Buffer
Memory)
Support for 32 and 16 Bit Buses
Support for 32, 16 and 8 Bit CPU Accesses
Synchronous, Asynchronous and Burst DMA
Interface Mode Options
128 Kbyte External Memory
Built-in Transparent Arbitration for Slave
Sequential Access Architecture
Flat MMU Architecture with Symmetric
Transmit and Receive Structures and
Queues
MII (Media Independent Interface) Compliant
MAC-PHY Interface (Compliant with
Emerging MII Standard Interface)
MII Management Serial Interface
Seven Wire Interface to 10 Mbps ENDEC
(SMC83C694)
EEPROM-Based Setup
208 Pin QFP Package
GENERAL DESCRIPTION
The SMC91C100 FEAST is a high-speed network
controller designed to facilitate the implemetation of
Fast Ethernet adapters and connectivity products.
It contains a dual speed CSMA/CD engine that
implements the MAC portion of the CSMA/CD
protocol at 10 and 100 Mbps and couples it with a
lean and fast data and control path system
architecture to ensure data movement with no
bottlenecks at 100 Mbps.
efficient buffer utilization scheme, reducing software
tasks and relieving the host CPU from performing
these housekeeping functions. The total memory
size is 128 Kbytes (external), equivalent to a total
chip storage (transmit and receive) of 64
outstanding packets.
FEAST provides a flexible slave interface for easy
connectivity with industry-standard buses. The Bus
Interface Unit (BIU) can handle synchronous as well
Memory management is handled using a unique
MMU (Memory Management Unit) architecture and
a 32-bit wide data path. This I/O mapped
architecture can sustain back-to-back frame
transmission and reception for superior data
throughput and optimal performance. It also
dynamically allocates buffer memory in an
as asynchronous buses, with different signals being
used for each one. FEAST's bus interface supports
synchronous buses like the VESA local bus, as well
as burst mode DMA for EISA environments.
Asynchronous bus support for ISA is supported
even though ISA cannot sustain 100 Mbps traffic.
Fast Ethernet could be adopted for ISA-
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