LG MG200 Service Manual page 32

VRDBB
VRIO
VRDBB
VRMEM
VRIO
VRRAM
VRMEM VRABB
VRRAM
VRSIM
VRABB
VRRTC
VRSIM
VRRTC
3.5.7 ADC Channels
ABB ADC block is composed of 4 internal ADC (Analog to Digital Converter) channels and 4
external ADC channel. This block operates charging process and other related process by reading
battery voltage and other analog values.
Resource
VCHG
Resource
VBAT
VCHG
ICHG
VBAT
VBACKUP
ICHG
ADIN1
VBACKUP
ADIN2
ADIN1
ADIN3
ADIN2
ADIN4
ADIN3
ADIN4
Table 3-5. LDO Output Table
Output Voltage
Table 3-5. LDO Output Table
1.5V
Output Voltage
2.8V
1.5V
2.8V
2.8V
2.8V
2.8V
2.8V
2.8V
2.85V
2.8V
1.5V
2.85V
1.5V
Table 3-6. ADC Channel Spec
ADC 8 Channel Spec
Table 3-6. ADC Channel Spec
NAME
ADC 8 Channel Spec
VCHG
NAME
VBAT
VCHG
ICHG
VBAT
VBACKUP
ICHG
JACK DETECT
VBACKUP
BATT_TEMP
JACK DETECT
TEMPSENSE
BATT_TEMP
HOOK_DETECT
TEMPSENSE
HOOK_DETECT
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3. H/W CIRCUIT DESCRIPTION
Usage
Digital Core of DBB
Usage
Peripheral devices
Digital Core of DBB
External memory
Peripheral devices
LCD & peripheral devices
External memory
Analog Block of ABB
LCD & peripheral devices
SIM card driver
Analog Block of ABB
RTC & 32KHz-crystal
SIM card driver
RTC & 32KHz-crystal
Description
Description
Charging Management
Charging Management
Backup Battery
Ear_mic set Jack detect
Backup Battery
Battery Detect
Ear_mic set Jack detect
Temperature Sensing
Battery Detect
HOOK_DETECT
Temperature Sensing
HOOK_DETECT