Power Application Controller
®
-23-
Copyright 2020 © Qorvo, Inc.
Rev 1.2
– Jan 17, 2019
6.2
ADC MUX
The ADC MUX is an 8-channel MUX local to the ADC on MCU that is directly controlled by
either by registers in the MCU, or automatically by the ADC DTSE.
To configure the ADC for manual mode, set
ADCCTL.MODE
to 00b. When the ADC is in
manual mode,
ADCCTL
may be used to enable and configure the ADC, including selecting the
MUX channel that is used for sampling.
To configure the ADC for DTSE mode, set
ADCCTL.MODE
to 01b. In DTSE mode, the
operation of the ADC and ADC MUX are done automatically in hardware according the DTSE
and ADC configuration.
In the PAC5527, there are 4 external pins and one internal ADC channel that may be configured
for ADC analog input that are shown in the table below.
Table 6-1 PAC5527 ADC MUX channels
ADC Channel
MCU I/O PIN
Description
ADC0
PG7
Connected to AFE MUX
ADC4
PF4
Package pin
ADC5
PF5
Package pin
ADC6
PF6
Package pin
ADC7
PF7
Package pin
The ADC0 channel is always used for analog input from the AFE and is connected to the AFE
MUX on MCU internal pin PG7. ADC channels ADC<7:4> are directly connected to package
pins on the device as shown in the table above.
To use any of these channels as analog inputs to the ADC the IO controller configuration for
these pins must be configured as analog input. See the IO Controller section in the PAC55XX
User Guide for more information on IO configuration.