FDC37M81 SMSC [SMSC Corporation], FDC37M81 Datasheet - Page 110

• Manufacturer Part Number: FDC37M81
• Description: PC98/99 Compliant Enhanced Super I/O Controller with Keyboard/Mouse Wake-Up
• Manufacturer: SMSC [SMSC Corporation]

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.
Table 45 - State of Floppy Disk Drive Interface Pins in Powerdown
DRVDEN[0:1]
nDSKCHG
FDD PINS
nWPROT
nWDATA
nWGATE
nRDATA
nHDSEL
nINDEX
nMTR0
nSTEP
nTRK0
nDS0
nDIR
OUTPUT PINS
Pins
INPUT PINS
STATE IN AUTO POWERDOWN
110
used for local logic control or part programming
are unaffected. Table 45 depicts the state of the
floppy disk drive interface pins in the powerdown
state.
Tristated
Tristated
Tristated
Tristated
Active
Active
Active
Active
Input
Input
Input
Input
Input