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)

    

  
  

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