LPC47M140-NC SMSC [SMSC Corporation], LPC47M140-NC Datasheet - Page 96

• Manufacturer Part Number: LPC47M140-NC
• Description: 128 PIN ENGANCED SUPER I/O CONTROLLER WITH AN LPC INTERFACE AND USB HUB
• Manufacturer: SMSC [SMSC Corporation]

Table 48 gives the state of the interface pins in the powerdown state. Pins unaffected by the powerdown are labeled
“Unchanged.”
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 49 depicts the state of the floppy disk drive interface pins in the powerdown state.
SMSC DS – LPC47M14X
Table 49 – State of Floppy Disk Drive Interface Pins in Powerdown
Table 48 – State of System Pins in Auto Powerdown
SYSTEM PINS
PCI_RESET#
DRVDEN[0:1]
LFRAME#
SER_IRQ
nWRTPRT
nDSKCHG
PCI_CLK
FDD PINS
LAD[3:0]
LPCPD#
nWDATA
nWGATE
nRDATA
LDRQ#
nHDSEL
nINDEX
nMTR0
nSTEP
nTRK0
nDS0
nDIR
OUTPUT PINS
INPUT PINS
STATE IN AUTO POWERDOWN
Page 96
STATE IN AUTO POWERDOWN
Tristated
Tristated
Tristated
Tristated
Active
Active
Active
Active
Input
Input
Input
Input
Input
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Rev. 03/19/2001