LPC47M172 SMSC Corporation, LPC47M172 Datasheet - Page 28

• Manufacturer Part Number: LPC47M172
• Description: ADVANCED I/O CONTROLLER WITH MOTHERBOARD GLUE LOGIC
• Manufacturer: SMSC Corporation

Advanced I/O Controller with Motherboard GLUE Logic
Datasheet
SMSC/Non-SMSC Register Sets (Rev. 02-27-04)
nSLP_S3
nSLP_S5
nRSMRST
PWRGD_3V
nPCIRST_OUT
nPCIRST_OUT2
GP10-GP15
GP16
FAN_TACH1
GP17
FAN_TACH2
SMB_CLK_M
SMB_CLK_R
SMB_DAT_M
SMB_DAT_R
DDCSDA_5V
GP20
DDCSCL_5V
GP21
DDCSDA_3V
GP22
DDCSCL_3V
GP23
TEST_EN
SIGNAL NAME
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
PWR WELL
-
-
-
-
Out – low
Out – low
-
-
Hi-Z
-
Hi-Z
Hi-Z
-
Hi-Z
-
Hi-Z
-
Hi-Z
-
Hi-Z
-
Hi-Z
-
-
PCI RESET
DATASHEET
-
-
-
-
Out – low
Out – low
-
-
Hi-Z
-
Hi-Z
Hi-Z
-
Hi-Z
-
Hi-Z
-
Hi-Z
-
Hi-Z
-
Hi-Z
-
-
Page 28
VCC POR
Input
Input
Out – low
Out – low
Out – low
Out – low
Input
Input
Hi-Z
Input
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Input
VTR POR
The GPIO and FAN_TACH
functions are multiplexed on
the same pin with GPIO as the
default function.
The DDC and GPIO functions
are multiplexed on the same
pin with DDC as the default
function. DDC function
requires external pull-up to
VCC5V.
The DDC and GPIO functions
are multiplexed on the same
pin with DDC as the default
function. DDC function
requires external pull-up to
VCC.
Test Mode pin. This pin has
internally pull-down to VSS.
External pull-up required to
enable the test mode.
NOTES
SMSC LPC47M172