LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
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3.11.3 HKADC(House Keeping ADC)
The MSM6275 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 MSM6275 device has six analog input pins which are multiplexed to the input of the
internal HKADC.
Figure. MSM6275 HKADC Block diagram
Table. HKADC channel table
ADC Ch#
Signal Name
Note
HKADC0
AMUX_OUT
RF PAM Temperature Check
HKADC1
VBATT_SENSE
Battery voltage level
HKADC2
HDET1
RF PAM Power Level Detector
HKADC3
TTY_ADC_DET
Ear jack Detection for TTY
HKADC4
PCB_Rev_ADC
PCB Version Check
HKADC5
CHARGER_THERM
Battery Temperature Check
Содержание TU550
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