LG CU920 Manual page 66

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3. TECHNICAL BRIEF
3.10.3 HKADC(House Keeping ADC)
The MSM6281 device has an on-chip 8-bit analog-to-digital converter (HKADC) which is tended to
digitize DC signals corresponding to analog parameters such as battery voltage, temperature, and RF
power levels. The MSM6281 device has six analog input pins which are multiplexed to the input of the
internal HKADC.
Channel
Signal
HKADC0
AMUX_OUT
HKADC1
VBATT_SENSE
HKADC2
TTY_ADC_DET
HKADC3
REMOTE_ADC
HKADC4
PCB_Rev_ADC
HKADC5
Battery_THERM
LGE Internal Use Only
Figure. MSM6281HKADC Block diagram
Note
RF PAM Temperature Check
Battery voltage level
Ear jack Detection for TTY
Do not use
PCB Version Check
Battery Temperature Check
Table. HKADC channel table
- 68 -
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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