LAN91C100FD datasheet(10/68 Pages) SMSC

10 / 68 page

SMSC DS – LAN91C100FD REV. B

Page 10

Rev. 05/31/2000

Table 1 - LAN91C100FD Pin Requirements

FUNCTION

PIN SYMBOLS

NUMBER OF PINS

System Address Bus

A1-A15, AEN, nBE0-nBE3

System Data Bus

D0-D31

System Control Bus

RESET, nADS, LCLK, ARDY,

nRDYRTN, nSRDY, INTR0-

INTR3, nLDEV, nRD, nWR,

nDATACS, nCYCLE, W/nR,

nVLBUS

Serial EEPROM

EEDI, EEDO, EECS, EESK,

ENEEP, IOS0-IOS2

RAM Data Bus

RD0-RD31

RAM Address Bus

RA2-RA16

RAM Control Bus

nROE, nRWE0-nRWE3,

RCVDMA, RDMAH

Crystal Oscillator

XTAL1, XTAL2

Power

VDD, AVDD

Ground

GND, AGND

External ENDEC 10 Mbps

TXEN, TXD, CRS, COL, RXD,

TXC, RXC, LBK, nLNK,

nFSTEP, AUISEL, MIISEL

Physical Interface 100 Mbps

TXEN100, CRS100, COL100,

RX_DV, RX_ER, TXD0-TXD3,

RXD0-RXD3, MDI, MDO, MCLK

Clocks

TX25, RX25

Miscellaneous

nCSOUT, nRXDISC

TOTAL

205

FIGURE 1 - LAN91C100FD BLOCK DIAGRAM

BUS

INTERFACE

UNIT

ARBITER

MEMORY

MANAGEMENT

UNIT

DIRECT

MEMORY

ACCESS

MEDIA

ACCESS

CONTROL

SERIAL

EEPROM

FIFO

Address

Data

Control

RAM

25 MHz

10 Mb

Interface

100

Media

Independent

Interface

LAN91C100FD Datasheet(PDF) 10 Page - SMSC Corporation

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