W83627DHG-PT Nuvoton Technology Corporation of America, W83627DHG-PT Datasheet - Page 187

• Manufacturer Part Number: W83627DHG-PT
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG-PT

• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

This chapter describes how the W83627DHG-P implements its ACPI function via these power control
pins: PSIN# (Pin 68), PSOUT# (Pin 67), SUSB# (i.e. SLP_S3#; Pin 73) and PSON# (Pin 72). The
following figure illustrates the relationships.
15.1.1 PSON# Logic
15.1.1.1.
The PSOUT# signal will be asserted low if the PSIN# signal is asserted low. The PSOUT# signal is
held low for as long as the PSIN# is held low. The South Bridge controls the SUSB# signal through the
PSOUT# signal. The PSON# is directly connected to the power supply to turn on or off the power.
Figure 15.2 shows the power on and off sequences.
The ACPI state changes from S5 to S0, then to S5
15.1 Power Control Logic
48 / 24 MHz
48 / 24 MHz
48 / 24 MHz
48 / 24 MHz
IOCLK
IOCLK
IOCLK
IOCLK
PSIN#
PSIN#
PSIN#
PSIN#
Normal Operation
3VCC
3VCC
3VCC
3VCC
W83627DHG
W83627DHG-P
W83627DHG
W83627DHG-P
3VSB/VBAT
3VSB/VBAT
3VSB/VBAT
3VSB/VBAT
SUSB#
SUSB#
SUSB#
SUSB#
Figure 15-1 Power Control Mechanism
PSON#
PSON#
PSON#
PSON#
PSOUT#
PSOUT#
PSOUT#
PSOUT#
W83627DHG-P/W83627DHG-PT
-177-
PWRBTN#
PWRBTN#
PWRBTN#
PWRBTN#
South Bridge
South Bridge
South Bridge
South Bridge
SLP_S3#
SLP_S3#
SLP_S3#
SLP_S3#
Publication Release Date: July 09, 2009
Power
Power
Power
Power
Supply
Supply
Supply
Supply
PSON#
PSON#
PSON#
PSON#
VCC ON
VCC ON
VCC ON
VCC ON
VCC ON
VCC ON
Version 1.94