User Guide

Software Functional Overview
FIC M785 Service Manual 3-33
3.7.4 AC Adapter
When plug in the AC adapter, the system will do the following action:
- The charger will charge the Main Battery, if remaining capacity is not full.
- The Battery Charging Indicator will turn on if the battery is in changing mode.
3.8 PMU08
The embedded controller PMU08 acts as a supplement for power management control. It
supports a lot of functions via SMBus interface.
3.8.1 The System EC RAM With PMU08
Embedded Controller Command Set
The EC I/F command set allows the OS to communicate with the PMU08.
For detail information refer to ACPI 1.0B specification.
EC I/F
Command
Command
Byte
Encoding
Byte
Register
R
/
W
Description Interrupt
#1 EC_SC W Command byte
Header
Interrupt on
IBF=0
#2 EC_DA
TA
W Address byte to
read
No Interrupt
Read Embedded
Controller
(RD_EC)
0x80
#3 EC_DA
TA
R Read data to host Interrupt on
OBF=1
#1 EC_SC W Command byte
Header
Interrupt on
IBF=0
#2 EC_DA
TA
W Address byte to
write
Interrupt on
IBF=0
Write Embedded
Controller
(WR_EC)
0x81
#3 EC_DA
TA
W Data to write Interrupt on
IBF=0
#1 EC_SC W Command byte
Header
No Interrupt Burst Enable
Embedded
Controller
(BE_EC)
0x82
#2 EC_DA
TA
R Burst
acknowledge byte
Interrupt on
OBF=1
Burst Disable
Embedded
Controller
(BD_EC)
0x83 #1 EC_SC W Command byte
Header
Interrupt on
IBF=0
#1 EC_SC W Command byte
Header
No Interrupt Query
Embedded
Controller
(QR_EC)
0x84
#2 EC_DA
TA
R Query value to
host
Interrupt on
OBF=1
3.8.2 PMU08 EC RAM List
The micro controller PMU08 acts as a supplement for power management control. It supports
the following functions via SMBus Command ( 0x80 , 0xC0 )
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com