Question about JTAG circuit on DEVKIT 5744P

[ianlee1]

Hi Sir,

I have a question about JTAG circuit on DEVKIT 5744P.  On the DEVKIT, it's only use R22, and R23 is empty.

If I add 0 Ohm resistors on R23, that mean R22 and R23 are not empty.  Could the JTAG  work properly?

Thanks for your help.

[lukaszadrapa]

Hi,

it's better to use only one of the resistors. To see the difference:

Regards,

Lukas

[ianlee1]

Hi Sir, 

Thanks for your reply.

As you say, does it mean the JTAG-RSTx pin need connect the "Reset Input/ Output" circuit firstly than connect to MCU-RSTx pin , and can not connect MCU-RSTx pin directly? 

[lukaszadrapa]

Hi,

MCU-RSTx can be connected directly to JTAG connector. But there's no advantage to have both resistors R22 and R23 populated.

Regards,

Lukas

[ianlee1]

Hi,

Thanks for your reply.

I encounter the error message on S32DS by using Multilink FX as below when I populated R22 and R23, but if I only populated R22, the 5744P downloading is fine. If R22 and R23 both are populated, 

how do I set the S32DS  to solve this problem?