3. TECHNICAL BRIEF
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3.10.2.4. 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 sensing
HKADC1 VBATT_SENSE Battery voltage level sensing
HKADC2 HDET1 RF WCDMA PAM Power Level sensing
HKADC3 RMT_ADC_MSM Headset remote key detection
HKADC4 PCB REVISION MAIN PCB Revision checking
HKADC5 VBAT_TEMP Battery Temperature sensing
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