FIC a440 Servicehandbuch
Software Functional Overview
3-20
FIC A440 Series Service Manual
State
Component
Component
Doze
Stand By
STR
STD/Soff
LCD Backlight
ON
Power down
Power Off
Power Off
Serial (UART1)
ON
Power down
Power down
Power Off
LAN
ON
Power down
Power down
Power Off
Modem
ON
Power down
Power down
Power down
Parallel
ON
Power down
Power Off
Power Off
Device Power Control Methodology During Stand by Mode
This section illustrates the control methodology of each device/component and its details
under Stand by mode.
Device
Power Down
Controlled by
Description
CPU
Hardware
Controlled by SUS_STAT1# pin
VT8601
Hardware
Controlled by SUS_STAT1# pin
VGA Chip
Software
Enter PCI PM D3 state
PCMCIA Controller
Software
Enter PCI PM D3 state
KBC Working
FDD
Software
FDD support power down command
HDD
Software
HDD support power down command
CD-ROM
Software
CD-ROM support power down command
Audio AMP
Software
Controlled by GPO[22] pin
Modem
Software
Enter PCI PM D3hot state
LAN
Software
Enter PCI PM D3hot state
LCD Backlight
Hardware
Controlled by VGA chip (FPBACK pin)
Clock Synthesizer
Hardware
Controlled by CPUSTP# and PCISTP# pin
PIC 16C62A
Working
MAX3243 (RS232
Transceiver)
Transceiver)
Software
Controlled by GPO[21] pin
L2 CACHE
Software
Controlled by GPO[3] pin
Device Power Control Methodology During Suspend to RAM Mode
This section illustrates the control methodology of each device/component and its details
under Suspend to RAM mode.
Device
Power Down
Controlled by
Description
VT8601
Hardware
Controlled by SUS_STAT1# pin
Super I/O
Hardware
Power off
VGA Chip
Software
Controlled by VT8501
HDD Hardware
Power
off
CD-ROM Hardware
Power
off.
PCMCIA Controller
Hardware
Controlled by PCI Bus.
Modem Software
Power
off