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What is the difference between LA-2729 and LA-3770? - Knowledgebase / FAQs by core architecture / Arm - Lauterbach Support

What is the difference between LA-2729 and LA-3770?

The LA-2729 and LA-3770 are both IDC20A-to-MIPI converters, but they differ in the signal assignment of the upper 10 pins of the MIPI-20 connector.

  • LA-2729: converts IDC20A to MIPI-10/20T

  • LA-3770: converts IDC20A to MIPI-10/20/34

Key differences:

  • LA-2729 uses a MIPI-20T connector with the following pin mapping:

    • Pin 12 = TRACECLK

    • Pin 14 = TRACEDATA[0]

    • Pin 16 = TRACEDATA[1]

    • Pin 18 = TRACEDATA[2]

    • Pin 20 = TRACEDATA[3]

  • LA-3770 uses a MIPI-20D connector with the following pin mapping:

    • Pin 12 = RTCK

    • Pin 14 = TRST-PULLDOWN

    • Pin 16 = TRST-

    • Pin 18 = EDBGRQ (EMU0)

    • Pin 20 = DBGACK (EMU1)


Notes
  • Most evaluation boards use a MIPI-20T pinout.

  • LA-3770 can be reconfigured (solder bridges) for MIPI-20T.

For further details, refer to the Arm Debug and Trace Interface Specification.

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