FDC37B78X View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37B78X

Enhanced Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR

SMSC -> Microchip 

FDD Interface Pins

All pins in the FDD interface which can be

connected directly to the floppy disk drive itself

are either DISABLED or TRISTATED.

Pins used for local logic control or part

programming are unaffected. TABLE 50 depicts

the state of the floppy disk drive interface pins in

the powerdown state.

TABLE 50 - STATE OF FLOPPY DISK DRIVE INTERFACE PINS IN POWERDOWN

FDD PINS

STATE IN AUTO POWERDOWN

INPUT PINS

nRDATA

Input

nWPROT

Input

nTR0

Input

nINDEX

Input

nDSKCHG

Input

OUTPUT PINS

nMTR0

Tristated

nDS0

Tristated

nDIR

Active

nSTEP

Active

nWDATA

Tristated

nWGATE

Tristated

nHDSEL

Active

DRVDEN[0:1]

Active

114

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