LPC47M14X datasheet(96/205 Pages) SMSC

tên linh kiện	LPC47M14X

Giải thích chi tiết về linh kiện	128 PIN ENGANCED SUPER I/O CONTROLLER WITH AN LPC INTERFACE AND USB HUB

PDF	205 Pages

Scroll/Zoom	100%

nhà sản xuất	SMSC [SMSC Corporation]

Trang chủ	http://www.smsc.com

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96 / 205 page

SMSC DS – LPC47M14X

Page 96

Rev. 03/19/2001

System Interface Pins

Table 48 gives the state of the interface pins in the powerdown state. Pins unaffected by the powerdown are labeled

“Unchanged.”

Table 48 – State of System Pins in Auto Powerdown

SYSTEM PINS

STATE IN AUTO POWERDOWN

LAD[3:0]

Unchanged

LDRQ#

Unchanged

LPCPD#

Unchanged

LFRAME#

Unchanged

PCI_RESET#

Unchanged

PCI_CLK

Unchanged

SER_IRQ

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.

Table 49 – State of Floppy Disk Drive Interface Pins in Powerdown

FDD PINS

STATE IN AUTO POWERDOWN

INPUT PINS

nRDATA

Input

nWRTPRT

Input

nTRK0

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

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