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Why does the E1 not support JTAG with RH850?

Last Updated:06/14/2017

Question:


Why does the E1 not support JTAG with RH850?

Answer:

LPD is supported as the debug interface of the E1 emulator for RH850 for the following reasons.

  • Number of pins used for the debug interface: 
    LPD requires less number of pins than JTAG does.
     
  • Debugging function: 
    Debug interface output of S / W trace is available with LPD but not with JTAG. 
    Other debugging functions are available with both of them.
     
  • Transfer speed: 
    LPD's would be faster than JTAG's.

Suitable Products

E1 [R0E000010KCE00]

E2 emulator [RTE0T00020KCE00000R]

RH850 Family