Datasheet > LAN91C100FD_06

LAN91C100FD_06

更新时间： 2024-02-05 19:53:35

品牌	Logo	应用领域
SMSC		控制器以太网
页数	文件大小	规格书
67页	347K
描述
FEAST Fast Ethernet Controller with Full Duplex Capability

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中文翻译

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数据手册

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LAN91C100FD_06 数据手册

LAN91C100FD REV. B

FEAST Fast Ethernet Controller

with Full Duplex Capability

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

Built-in Transparent Arbitration for Slave Sequential

Access Architecture

Early TX, Early RX Functions

Flat MMU Architecture with Symmetric Transmit

and Receive Structures and Queues

MII (Media Independent Interface) Compliant MAC-

PHY Interface Running at Nibble Rate

MII Management Serial Interface

Seven Wire Interface to 10 Mbps ENDEC

EEPROM-Based Setup

Full Duplex Capability

128 Kbyte External Memory

GENERAL DESCRIPTION

The LAN91C100FD is designed to facilitate the implementation of first generation Fast Ethernet adapters and connectivity

products. For this first generation of products, flexibility dominates over integration. The LAN91C100FD is a digital device

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 the CPU to packet RAM data movement does not cause a bottleneck at 100

Mbps.

Total memory size is 128 Kbytes, equivalent to a total chip storage (transmit plus receive) of 64 outstanding packets. The

LAN91C100FD is software compatible with the LAN9000 family of products and can use existing LAN9000 drivers (ODI,

IPX, and NDIS) in 16 and 32 bit Intel X86 based environments.

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 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 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-based nodes on the basis of the aggregate traffic benefits.

Two different interfaces are supported on the network side. The first is a conventional seven wire ENDEC interface that

connects to the LAN83C694 for 10BASE-T and coax 10 Mbps Ethernet networks. The second interface follows the MII

(Media Independent Interface) specification draft standard, consisting of 4 bit wide data transfers at the nibble rate. This

interface is applicable to 10 Mbps or 100 Mbps networks. Three of the LAN91C100FD’s pins are used to interface to the

two-line MII serial management protocol. Four I/O ports (one input and three output pins) are provided for LAN83C694

configuration.

SMSC DS – LAN91C100FD REV. B

Rev. 01-20-06

12 3 4 5 6 7...67

中文翻译

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与LAN91C100FD_06相关器件

型号	品牌	获取价格	描述	数据表
LAN91C100FD_0601	SMSC	获取价格	FEAST Fast Ethernet Controller with Full Duplex Capability
LAN91C100FD-FD	MICROCHIP	获取价格	LAN91C100FD-FD
LAN91C100FD-FD-SS	SMSC	获取价格	Micro Peripheral IC
LAN91C100FD-FD-SS	MICROCHIP	获取价格	Micro Peripheral IC
LAN91C100FD-FDTQFP	SMSC	获取价格	Micro Peripheral IC
LAN91C100FDPQFP	SMSC	获取价格	LAN Controller, 1 Channel(s), 12.5MBps, CMOS, PQFP208, PQFP-208
LAN91C100FDQFP	SMSC	获取价格	LAN Controller, 2 Channel(s), 12.5MBps, CMOS, PQFP208, PLASTIC, QFP-208
LAN91C100FDREVB	SMSC	获取价格	FEAST FAST ETHERNET CONTROLLER WITH FULL DUPLEX CAPABILITY
LAN91C100FDREVD	SMSC	获取价格	FEAST FAST ETHERNET CONTROLLER WITH FULL DUPLEX CAPABILITY
LAN91C100-FD-SS	SMSC	获取价格	FEAST Fast Ethernet Controller with Full Duplex Capability

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