Compal NBLB2, Service Manual

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NBLB2 Service Manual
43
12.9.3 Deep Sleep

EC will enter deep sleep mode when system in S3/S4/S5 state to save
power consumption.

In deep sleep mode, EC will stop all device service function.

Enter deep sleep mode conditions.
Status
S3 S4 S5
AC only
V V V
Battery only
V
AC + Battery(full)
V V V

Wake up events
Status
S3 S4 S5
Wake up events
SLP_S3 SLP_S4 SLP_S5
Keyboard (if needed) PME PME
Touch pad (if needed) Power button Power button
PME AC_IN AC_IN
Power button WDT WDT
AC_IN CIR (if needed) CIR (if needed)
WDT
CIR (if needed)

The deep sleep cycle shows as below.
Wake 2 S
to read
total
battery
command
Delay
30ms
Deep
Sleep
500ms
Delay
30ms
Deep
Sleep
500ms
…
Delay
30ms
Deep
Sleep
500ms
Wake 2 S to
read total
battery
command
…
Deep Sleep Cycle 120 times=60 sec
12.10 Thermal Status Report and Fan Control
EC will control fan on/off function according to the CPU temperature (EC
will get temperature from PCH through SMBus). Fan will be off when
temperature below speed 1 speed down temperature, and if temperature
over EC Shutoff temperature five times, EC will auto turn off system to
protect CPU. The following table is detailed settings.
If system is failed to read CPU temperature from PCH, fan will be on for
30s when system is from S5/S4 to S0, and it will be on for 3s when
system is from S3 to S0.