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3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3.10.3 HKADC(House Keeping ADC)
The MSM6280 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 MSM6280 device has six analog input pins which are multiplexed to the input of the
internal HKADC.
Figure. MSM6280HKADC Block diagram
Table. HKADC channel table
PCB Version Check
PCB_Rev_ADC
HKADC4
ADC Reference voltage
REF_ADC
HKADC2
Ear jack Detection for TTY
TTY_ADC_DET
HKADC3
Battery Temperature Check
Battery voltage level
RF PAM Temperature Check
Note
Battery_THERM
VBATT_SENSE
AMUX_OUT
Signal
HKADC5
HKADC1
HKADC0
Channel
Содержание U990
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