Adc Channels; Switch On/Off; Memories - LG T5100 Service Manual

2. TECHNICAL BRIEF
E. 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.
ADC 8 channels
Resource
VCHG
VBAT
ICHG
VBACKUP
ADIN1
ADIN2
ADIN3
ADIN4
F. Switch ON/OFF
T5100 Power State : Defined 4cases as follow
- Power-ON : mobile is powered by main battery or backup battery.
- Power-OFF : mobile isn't powered by any battery.
- Switch-ON : mobile is powered and waken up from switch-off state.
- Switch-OFF : mobile is powered to maintain only the permanent function(ULPD).
To enter into Switch-ON state, one of following 4 condition is satisfied.
- PWR-ON pushed after a debouncing time of 30ms.
- ON_REMOTE : After debouncing, when a falling edge is detected on RPWON pin.
- IT_WAKE_UP : When a rising edge is detected on RTC_ALARM pin.
- CHARGER_IC :When a charger voltage is above VBAT+0.4V on VCHG.
G. Memories
- 192Mbit Flash + 64Mbit Pseudo-SRAM
- 16 bit parallel data bus (ADD01 ~ ADD22)
Table 7. ADC Channel Spec.
Name
VCHG
VBAT
ICHG
VBACKUP
USB_DETECT.
BATT_TEMP
TEMPSENSE
HOOK_DETECT
Description
Charging Management
Backup Battery
USB Detect
Battery Detect
Temperature Sensing
Jack & Hook Detect
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