SPRUID8D September 2020 – January 2022 TMS320F280040-Q1 , TMS320F280040C-Q1 , TMS320F280041 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280045 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1
Most communication modules support digital or analog loopback capabilities for the I/Os. To confirm the implemented loopback capabilities of the module, see the device-specific technical reference manual. Digital loopback tests the signal path to the module boundary. Analog loopback tests the signal path from the module to the I/O cell with output driver enabled. For best results any tests of the functionality should include the I/O loopback.