SWCU192 November 2021 CC1312R7 , CC1352P7 , CC2652P7 , CC2652R7
The programmable current output connects to the positive input of COMPA, which makes it possible to charge an external capacitance connected to an analog-capable AUX I/O. Physically, this output also connects to the reference DAC output. This connection is not intended for ISRC usage. Hence, the connection shows as a dotted line in Figure 20-35.
When ISRC is enabled, it drives the current configured by ADI_4_AUX:ISRC.TRIM onto the COMPA_IN analog node or to ground. The connection controlled by AUX_ANAIF:ISRCCTL.RESET_N.
The user must ensure that the COMPA positive input only has one driver at all times. To avoid shorting signals together internally, TI provides ROM-based TI-DriverLib functions that ensure a break-before-make switching of the internal muxes.