PAC2514x Users Guide Preview
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Rev. 1.3 12 December 2023 © 2023 Qorvo US, Inc.
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In order to measure each independent voltage, the VADC multiplexer must be configured to
select the cell which will be connected into the VADC converter. The VBMUXSEL value can be
configured by writing a number from 0d to 19d to the SOC.VADCTL.VBMUX register.
Alternatively, the same multiplexer allows the voltage conversion of the Battery Over Voltage
DAC by selecting multiplexer entry 20d.
To start a VADC Conversion, the SOC.VADCCTL.ADCSTART bit must be set to 1d. The read
only bit SOC.VADCCTL.VADCBUSY bit will set to 1d during the conversion and set to 0d when
completed. The VADCBUSY bit signal is also routed to the MCU PB4 GPIO, which can be
configured to generate an interrupt based on the VADCBUSY signal. The 16-bit Cell Voltage
conversion can be obtained by reading the SOC.VADCRESHI and SOC.VADCRESLO
registers.
Reading cell voltages can be achieved concurrently while the current ADC operates and convert
current values.
7.4.11 AFE MUX
The CAFE also contains the AFE MUX that can be used to sample the internal power supply
rails on the device, internal die temperature, and other signals.
The AFE MUX select can be controlled from the SOC bus or via the EMUX. The output of the
AFE MUX is connected to the 12-bit ADC on the MCU so it may be sampled by the auto-
sequencer.
The MUX channels that are available are:
•
VCORE
–
1.9V Core Logic LDO
•
VCC33
–
3.3V Analog LDO
•
VCCIO
–
3.3V Digital I/O LDO
•
VSYS
–
5V System Supply
•
VP
–
DC/DC Output
•
AIO0A
–
AIO0 Analog Output
•
BAT
–
Battery Stack Input
•
PACK+ - Charger Supply Input
•
VCP
–
Charge Pump Output
•
VREF
–
2.5V Voltage reference
•
FUSE
–
FUSE output
•
CHG
–
CHG FET gate driver signal
•
DSG
–
DSG FET gate driver signal
•
VPTAT
–
Internal Temperature Sensor
•
LOADDET
–
Load monitoring signal
•
SCPDAC
–
Short Circuit Protection DAC output
•
OCCDAC
–
Over Current Charge DAC output
•
OCDDAC
–
Over Current Discharge DAC output
•
VIN
–
Main Input Supply Voltage