The DSTREAM probe supports two separate voltage domains to work with debug and trace interfaces on differing voltage rails.
Voltage domain A is used by the following connectors:
ARM JTAG 20
TI JTAG 14
ARM JTAG 14
Voltage domain B is used by the following connectors:
The MIPI 34 connector is the only one which supports both voltage domains, and is equipped with two VTREF pins to achieve the correct logic levels.
The VTREF A and VTREF B LEDs on the probe indicate when targets have been detected in the respective voltage domains.