SPRUII0F May 2019 – June 2024 TMS320F28384D , TMS320F28384D-Q1 , TMS320F28384S , TMS320F28384S-Q1 , TMS320F28386D , TMS320F28386D-Q1 , TMS320F28386S , TMS320F28386S-Q1 , TMS320F28388D , TMS320F28388S
Trace capability from Cortex®-M4 will be supported on the CM subsystem. There are two trace interfaces supported on Cortex®-M4:
Both the options are supported on this device. Figure 41-16 illustrates the high-level clock and signal hookup to and from Trace Port Interface Unit.
Table 41-10 lists the key attributes of the two trace data export mechanisms. Refer to the Arm® Architecture Reference Manual for further details about TPIU and trace mechanisms.
Attribute Parallel Trace | Serial Wire Trace | Parallel Trace |
---|---|---|
Protocol | UART Protocol/Manchester encoded data stream | Trace Data changes on both edges of TRACECLK. |
Data throughput rate | Frequency(CMHCLK)/(TPIU_ACPR + 1) | Frequency(CMHCLK)/2 |
You must configure the GPIO mux to select a trace function on the GPIO pin to use it.