Aurix TC324 DAP initialization failed - UDE PLS

[User15256]

Dear community, 

I was using Infineon TC334 light kit with UDE PLS debugger, everything works fine and I build my application draft.

Now I received our custom board using TC324, but I can not establish JTAG/DAP connection with the board, here are some information about it:

ESR0: aways low.
PORST: switch LOW / HIGH while debugger tries to connect.
ESR1: aways high.
VDD: 1.25v
VEXT: 3.3v
VEVRSB: 3.3v

actual configuration: 1 and 2 set via pull down to 0. rest is a 1 via internal pull up

Any hints or ideas I could try?

[KB]

Hello User15256,

Could you share the schematic portion showing the connections to HWCFG4 and HWCFG5 as well ?

Thank you

Regards,

KB

[Yuva · Accepted solution]

Hello,

Can you also check if all the guidelines in AP32438 are followed?

Thanks.