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Target connector selection guide

When choosing a debug or trace connector to design into a target board, there are many connector attributes to consider.

The connector attributes are:

Table 2-1 Connector attributes

Connector Arm JTAG 20 CoreSight™ 10 CoreSight 20 TI JTAG 14 MICTOR 38 MIPI 34 MIPI 60
JTAG supported Yes Yes Yes Yes Yes Yes Yes
SWD supported Yes Yes Yes Yes Yes Yes Yes
SWO supported Yes Yes Yes Yes Yes Yes Yes
Parallel trace supported No No Yes No Yes Yes Yes
Max parallel trace width (1) N/A N/A 4 N/A 16 4 32
Separate debug/trace voltage domains No No No No Yes Yes Yes
Requires adapter No No No Yes Yes Yes Yes
Cable signal integrity Medium Good Good Poor Excellent Good Excellent
MIPI pinout compatible No Yes Yes No No Yes Yes
Target connector cost Low Low Low Low High Low Medium
Connector durability (2) High Low Low High Medium Low Medium
Approximate footprint area (mm²) (3) 297 65 95 250 221 140 170
Through-hole/SMD Either Either Either Either SMD (4) Either SMD
Ease of assembly (placement/soldering) High High High High Low High Medium

Note

  1. The trace width supported by the connector. DSTREAM-ST supports up to 4-bit wide parallel trace.
  2. Through-hole variants of connectors are more durable than SMD variants.
  3. Assumes an SMD part is being used. Through-hole parts use additional space on the opposite side of the board.
  4. The Mictor 38 connector is a hybrid part which has SMD signal pins and through-hole ground pins (which must be solder-pasted from the component side). Mictor 38 connector is not recommended for future designs.
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