Adaptation for Arm ETM Preprocessor Mictor


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Target Adaptation of Trace Probe "ETM Preprocessor" for Arm ETM/PTM with Mictor-38


Products

Order No.Probe
LA-3308Trace for Arm-ETM via AUTOFOCUS II (PACK) 
LA-7921Preprocessor for ARM-ETM 200 flex cable out of production
LA-7923Preprocessor for ETM 2-MICTOR 2 flex cables out of production
LA-7991Preprocessor for ARM-ETM with AUTOFOCUS Flex out of production
LA-7992Preproc. for ARM-ETM/AUTOFOCUS II 600 Flex out of production


Target Connector Type


Tyco Part NumberDescription
2-5767004-2Vertical, surface mount, board to board/cable connector, RoHS compliant.
767054-1Vertical, surface mount, board to board/cable connector.
767061-1Vertical, surface mount, board to board/cable connector.
5767044-1Right angle, straddle mount, board to board/cable connector, RoHS compliant.

Link to Tyco Electronics

Target Connector Placement


The adaption uses one or two 38 pin Mictor connectors.
The second connector is only needed if the target trace port provides more than 16 trace data pins.
A separation distance of 1350 mil is required if adaption without flex cable is intended.
We recommend to place the even numbered pins at the PCB border side (flex cable won't be twisted).

Pinout

Supported Pinouts and Modes

Below you can see the pinout used for ETMv3/ETMv4/PFTv1 in Normal and Continuous mode for current Arm cores.
The pinouts for ETMv1 in Normal, Multiplexed and Demultiplexed mode for the older ARM7 and ARM9 cores are no
longer described here.

Debug Signals

The pinout of the Mictor connector optionally includes the debug signals which needs to go to the Debug Cable
(20-pin standard header). The Preprocessors have a 20-pin connector where the user can plug in the Debug Cable.
Alternatively the Debug Cable can be plugged on a separate 20-pin connector on the target. In this case there is no
need to connect the debug signals to the Mictor. For better signal quality it is better not to connect them.
The debug signals are DBGRQ, RESET-, TDO, RTCK, TCK, TMS, TDI, TRST- DBGACK, VREF-DEBUG.



ETMv3/ETMv4/PFTv1, Normal and Continuous Mode (typically used)


Connector 1
Signal

Pin

 Pin

Signal

    
N/C12N/C
N/C34N/C
GND56TRACECLK
DBGRQ78DBGACK
RESET-910EXTRIG
TDO|-|SWO1112VREF-TRACE
RTCK1314VREF-DEBUG
TCK|TCKC|SWCLK1516TRACEDATA[7]
TMS|TMSC|SWDIO1718TRACEDATA[6]
TDI1920TRACEDATA[5]
TRST-2122TRACEDATA[4]
TRACEDATA[15]2324TRACEDATA[3]
TRACEDATA[14]2526TRACEDATA[2]
TRACEDATA[13]2728TRACEDATA[1]
TRACEDATA[12]2930GND
TRACEDATA[11]3132GND
TRACEDATA[10]3334VCC
TRACEDATA[9]3536TRACECTL
TRACEDATA[8]3738TRACEDATA[0]
    
Connect Pin 39,40,41,42,43 to GND


VCC needs to have VREF-TRACE level.

Connector 2 (only needed if more than 16 data bit)
Signal

Pin

 Pin

Signal

    
N/C12N/C
N/C34N/C
GND56N/C
N/C78N/C
N/C910N/C
N/C1112N/C
N/C1314N/C
N/C1516TRACEDATA[23]
N/C1718TRACEDATA[22]
N/C1920TRACEDATA[21]
N/C2122TRACEDATA[20]
TRACEDATA[31]2324TRACEDATA[19]
TRACEDATA[30]2526TRACEDATA[18]
TRACEDATA[29]2728TRACEDATA[17]
TRACEDATA[28]2930GND
TRACEDATA[27]3132GND
TRACEDATA[26]3334VCC
TRACEDATA[25]3536GND
TRACEDATA[24]3738TRACEDATA[16]
    
Connect Pin 39,40,41,42,43 to GND


VCC needs to have VREF-TRACE level.



 

Converter


Picture
Order No.
Probe
Mictor Flex Extension
Mictor Flex Extension Long
Converter Mictor-38/IDC20A to MIPI-20T
Converter 2xMictor38/IDC20A to MIPI-60
Converter Mictor38 to 2.54 mm flying leads
Converter Vertical to Horizontal for MICTOR
Levelshifter for trace probes at 5V targets




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Last generated/modified: 28-Jan-2026