W83627DHG Datasheet, PDF (33/268 Pages) Winbond – WINBOND LPC I/O

W83627DHG
5.11.6 GPIO-5 Interface
SYMBOL
PIN
I/O
GP50
I/O_12t
EN_GTL
77
IN_cu
WDTO#
O₁₂
GP51
75
I/OD_12t
RSMRST#
OD₁₂
GP52
SUSB#
73
I/OD_12t
IN_t
GP53
PSON#
72
I/OD_12t
OD₁₂
GP54
PWROK
71
I/OD_12t
OD₁₂
GP55
I/O_12t
EN_ACPI 70
IN_cd
SUSLED
GP56
PSIN#
GP57
PSOUT#
O₁₂
I/OD_12t
68
IN_tu
I/OD_12t
67
OD₁₂
DESCRIPTION
General-purpose I/O port 5 bit 0. (Default after strapping)
During VSB power reset (RSMRST), this pin is pulled high
internally and is defined as VID transition voltage level (GTL or
TTL), and the value is shown at CR2C bit 3. The PCB layout
should reserve space for a 1-kΩ resistor to pull down this pin if
TTL is the selected VID level.
Watchdog Timer output signal.
General-purpose I/O port 5 bit 1.
Resume reset signal output.
General-purpose I/O port 5 bit 2.
System S3 state input.
General-purpose I/O port 5 bit 3.
Power supply on-off output.
General-purpose I/O port 5 bit 4.
This pin generates the PWROK signal while 3VCC comes in.
General-purpose I/O port 5 bit 5. (Default)
During VSB power reset (RSMRST), this pin is pulled down
internally and is defined as EN_ACPI (enabling particular ACPI
functions), which provides the value for CR2C bit 4 (EN_ACPI).
The PCB layout should reserve space for a 1-kΩ resistor to pull
down this pin to ensure successful disabling of particular ACPI
functions, and a 1-kΩ resistor is recommended to pull the pin up if
wish to enable particular ACPI functions. (This pin function is both
for UBE and UBF version only)
Suspended LED output.
General-purpose I/O port 5 bit 6.
Panel Switch Input. This pin is active-low with an internal pulled-up
resistor.
General-purpose I/O port 5 bit 7.
Panel Switch Output. This signal is used to wake-up the system
from S3/S5 state.
5.11.7 GPIO-6 Interface
See 5.4 Serial Port & Infrared Port Interface
Publication Release Date: Aug, 22, 2007
-21-
Version 1.4