FDC37M81 View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37M81

PC98/99 Compliant Enhanced Super I/O Controller with Keyboard/Mouse Wake-Up

SMSC -> Microchip 

SER_IRQ

PCI_CLK

nIOR

nIOW

AEN

*

SA[0:12] (nCS)

*

SA[13-15]

SD[O:7]

*

DRQ[1:3]

*

nDACK[1:3]

TC

RESET_DRV

IOCHRDY

nPME

SMI

PME

WDT

SERIAL

IRQ

DATA BUS

ADDRESS BUS

MULTI-MODE

PARALLEL

PORT/FDC

MUX

PD0-7

BUSY, SLCT, PE,

nERROR, nACK

nSTB, nSLCTIN,

nINIT, nALF

HOST

CPU

INTERFACE

VTR Vcc Vss

CONFIGURATION

REGISTERS

CONTROL BUS

16C550

COMPATIBLE

SERIAL

PORT 1

TXD1, nCTS1, nRTS1

RXD1

nDSR1, nDCD1, nRI1, nDTR1

WDATA

WCLOCK

SMSC

PROPRIETARY

82077

COMPATIBLE

VERTICAL

FLOPPYDISK

CONTROLLER

DIGITAL

DATA

SEPARATOR

WITH WRITE

PRECOM-

PENSATION

CORE

RCLOCK

RDATA

CLOCK

GEN

CLOCKI

14MHz

nINDEX DENSEL nDS0

nTRK0 nDIR nMTR0

nDSKCHG

nSTEP

nWDATAnRDATA

DRVDEN0

nWRPRT nHDSEL DRVDEN1*

nWGATE

16C550

COMPATIBLE

SERIAL

PORT 2 WITH

INFRARED

IRRX, IRTX

TXD2(IRTX), nCTS2, nRTS2*

RXD2(IRRX)*

nDSR2, nDCD2, nRI2, nDTR2*

8042

KCLK

KDATA

MCLK

MDATA

GATEA20, KRESET

P12*, P16*

*Denotes Multifunction Pins

FIGURE 1 - FDC37M81x BLOCK DIAGRAM

11

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