Mictor 38 connector
The Mictor 38 connector is a 38-way 0.635mm pitch socket which supports JTAG debug, Serial Wire Debug, SWO trace, and up to 16-bit wide continuous-mode TPIU trace.
- DSTREAM-ST captures up to 4-bit wide trace (TRACEDATA[0-3]).
- The center ground pins of the Mictor socket must be solder-pasted on the same side of the PCB as the connector. If you do not solder-paste on the same side of the PCB as the connector, it might cause mechanical or signal integrity issues.
Typically, the socket used is a 2-767004-2 from TE Connectivity.
To use this connector with DSTREAM-ST, the supplied Mictor adapter must be used in conjunction with both the Arm JTAG 20 debug cable and the CoreSight™ 20 debug cable.
Figure 2-5 Mictor 38 connector pinout
Mictor 38 pinout table
Table 2-7 Mictor 38 pinout table
|Pin||Signal name||Pin||Signal name|
|29||TRACEDATA||30||Logic 0 (3)|
|31||TRACEDATA||32||Logic 0 (3)|
|33||TRACEDATA||34||Logic 1 (3)|
- The EXTTRIG signal is deprecated and not supported by Arm® Development Studio.
- Although the Arm CoreSight specification only supports a single VTREF (on pin 12), the DSTREAM-ST unit can support separate debug and trace VTREFs. If only TRACE_VTREF is powered, the DSTREAM-ST unit assumes that both debug and trace are to operate at that voltage.
- These signals are not used by the DSTREAM-ST unit. To maintain compatibility with other debug units, connect the signals to the appropriate power rails.
- The TRACECTL signal is not currently supported by the DSTREAM-ST unit because only continuous-mode TPIU trace is supported.