i.MX ProcessorsのトピックRe: IMX8M JTAG Circuit

IMX8M JTAG Circuit

leandroschmitz — Thu, 14 Feb 2019 01:58:41 GMT

Hello,

I having problems to debug M4 software on IMX8M, I follow the guide on Using JLink Debugger for M4 software on IMX8M but J-LINK Server Can't find any processor on JTAG.

I think witch the problem may be in my JTAG circuit, mainly the o use of a pull-down on JTAG_TCK.

Can you help me reviewing my JTAG circuit.

Thanks

Regards

Re: IMX8M JTAG Circuit

sinanakman — Thu, 14 Feb 2019 19:43:03 GMT

Hi Leandro

How is you JTAG_MOD connected ? Is it properly pulled down ?

Regards

Sinan Akman

Re: IMX8M JTAG Circuit

igorpadykov — Fri, 15 Feb 2019 03:08:52 GMT

Hi Leandro

i.MX8M EVK uses the same connection so seems there is no problem using it.

Schematics
Design Files for the i.MX 8M Evaluation Kit (EVK)(REV 0)

i.MX 8M Evaluation Kit | NXP

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: IMX8M JTAG Circuit

pantarun_92 — Thu, 01 Jul 2021 06:46:19 GMT

JTAG_TCK has internal 27K Pull up, why is a10K pull down required?