37C67X datasheet(11/194 Pages) SMSC

11 / 194 page

FIGURE 1 - FDC37C67x BLOCK DIAGRAM

nDSR1, nDCD1, nRI1, nDTR1

TXD1, nCTS1, nRTS1

nINIT, nALF

HOST

CPU

MULTI-MODE

PARALLEL

PORT/FDC

MUX

16C550

COMPATIBLE

SERIAL

PORT 1

16C550

COMPATIBLE

SERIAL

PORT 2 WITH

INFRARED

CONFIGURATION

REGISTERS

INTERFACE

CONTROL BUS

ADDRESS BUS

DATA BUS

nIOR

nIOW

AEN

SA[0:12] (nCS)

SD[O:7]

DRQ[1:3]

nDACK[1:3]

IRQ[3:7,10:12] *

RESET_DRV

CLOCK

GEN

ICLOCK

(14.318)

nINDEX

nTRK0

nDSKCHG

nWRPRT

nWGATE

DENSEL

nDIR

nSTEP

nHDSEL

nDS0,1

nMTR0,1

RDATA

RCLOCK

WDATA

WCLOCK

nWDATA nRDATA

TXD2(IRTX), nCTS2, nRTS2 *

RXD2(IRRX)*

nDSR2, nDCD2, nRI2, nDTR2 *

RXD1

PD0-7

BUSY, SLCT, PE,

nERROR, nACK

nSTB, nSLCTIN,

SMSC

PROPRIETARY

82077

COMPATIBLE

VERTICAL

FLOPPYDISK

CONTROLLER

CORE

DIGITAL

DATA

SEPARATOR

WITH WRITE

PRECOM-

PENSATION

IOCHRDY

IRRX, IRTX*

DRVDEN0

DRVDEN1

SERIAL

IRQ

SER_IRQ *

PCI_CLK *

SA[13-15]

8042

KCLK

KDATA

MCLK

MDATA

GATEA20, KBDRST

P12, P16 *

IRR3/Mode*

SMI

Vcc

Vss

nSMI

WDT

* Denotes Multifunction Pins

37C67X Datasheet(PDF) 11 Page - SMSC Corporation

37C67X Datasheet(HTML) 11 Page - SMSC Corporation

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