The MIPI 34 connector can be used in either standard JTAG (IEEE 1149.1) mode or Serial Wire Debug (SWD) mode. It can also capture up to 4-bits of parallel trace in Trace Port Interface Unit (TPIU) continuous mode.
This connector supports separate voltage domains for the debug and trace signals. It is therefore necessary to supply the appropriate voltages to both of the VTREF pins.
The following figure shows the MIPI 34 connector pinout:
A polarizing key is fitted only at the target end of the cable.