ZHCSAH6F November 2012 – September 2021 TMS320F28050 , TMS320F28051 , TMS320F28052 , TMS320F28052F , TMS320F28052M , TMS320F28053 , TMS320F28054 , TMS320F28054F , TMS320F28054M , TMS320F28055
PRODUCTION DATA
The AFE contains up to seven comparators with up to three integrated DACs, one VREFOUT-buffered DAC, up to four PGAs, and up to four digital filters. Figure 8-24 and Figure 8-25 show the AFE.
The comparator output signal filtering is achieved using the digital filter present on selective input line and qualifies the output of the COMP/DAC subsystem (see Figure 8-27). The filtered or unfiltered output of the COMP/DAC subsystem can be configured to be an input to the Digital Compare submodule of the ePWM peripheral.
The analog inputs are brought in through the AFE subsystem rather than through an AIO Mux, which is not present.
The ADCINSWITCH register is used to control ADC inputs dynamically, and the setting of this register is separate from the AFE and digital filter initialization.