Software Functional Overview 3-23
Device PM Control/Stand By Mode
Device
Power Down
Controlled By
Description
MTXC/440BX
Hardware
Power Off
Super I/O Chip
Hardware
Power Off
VGA Chip
Hardware
Power Off
HDD
Hardware
Power Off
CD-ROM
Hardware
Power Off
PCMCIA Controller
Hardware
Power Off
Modem
Hardware
Supply Ring Power
FDD
Hardware
Power Off
Audio Chip
Hardware
Power Off
Audio AMP
Hardware
Power Off
IR Module
Hardware
Power Off
LCD Backlight
Hardware
Power Off
Clock Synthesizer
Hardware
Power Off
KBC
Hardware
Power Off
MAX3243(RS232
Transceiver)
Hardware
Power Off
L2 CACHE
Hardware
Power Off
PIC 16C62
Software
Controlled by PIC 16C62 power down command
ACPI
This section provides the ACPI software function of the notebook.
General Requirements
The BIOS must meet the following general Power Management requirements.
n
Refers to the portion of the firmware that is compatible with ACPI
specifications.
n
Support for Suspend-to-RAM (S3 state) and Suspend-to-Disk mode (S4
state).
n
Support the Wake up event from Modem Ring in S2~S5 state. This is
enabled by a CMOS Setup option.
n
Support the Wake up event from RTC Time/Date alarm in S2~S5 state.
This is enabled by a CMOS Setup option.
n
Power Management must not substantially affect or degrade system
performance.