TMS320C6655: Error connecting to Target:

Vighnesh Vernekar

Part Number: TMS320C6655

Hi TI team

We are using XDS200 emulator to program TMS8320C6655. We are not able to connect to device
Getting below mentioned error During programming from CCS

error connecting to the target:

(error - 2131 @ 0x0)

Unable to access device register. Reset the device, and retry the operation.

If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower tclk).

(Emulation package 8.4.0.00006)

We are not able to proceed further all connections are fine. Power fine

Please help us in resolving this problem. JTAG connection Error message CCS log file

over 3 years ago

0 Shankari G over 3 years ago

TI__Mastermind 25535 points

HI,

I understand that it is a custom board.

If you are new to setting upthe JTAG connections.... and Just to make sure and to make you experience on the working setup, Do you have TI EVMS? i.e., C6657 EVM ?

If yes, Would you please try the same target connection, by following this FAQ and update me the results?

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1064425/faq-tms320c6657-how-to-create-target-configuration-and-do-test-connection-on-c6657-evm

Once that is through, you will get an idea, where the problem lies...

And also, on the schematics front, Please do compare with the schematics of C6657 EVM with your custom board.

https://www.einfochips.com/partnerships-and-alliances/device-partnerships/texas-instruments/tms320c6657-evm/

Regards

Shankari G

0 Vighnesh Vernekar over 3 years ago in reply to Shankari G

Prodigy 20 points

Yes we have C6657 EVM we have already setup JTAG in EVM board. We have done target connection it's working fine in EVM board.

Same procedure followed for custom board. JTAG target connection failed.

Results of both EVM and custom board are attached

Please suggest what to do next.

0 Shankari G over 3 years ago in reply to Vighnesh Vernekar

TI__Mastermind 25535 points

Vignesh,

From your screenshot, I could understand, the JTAG works on C6657 EVM and not on your custom board.

If that is the case, it is most likely the hardware problem.

Please visit these links which talk about the JTAG connection issues.

https://software-dl.ti.com/ccs/esd/documents/ccs_debugging_jtag_connectivity_issues.html

https://dev.ti.com/tirex/explore/node?node=AOi9Jj0vmBMJ0KQKaKITgg__FUz-xrs__LATEST

https://www.ti.com/lit/ug/spru641/spru641.pdf

https://www.ti.com/lit/ug/spru655i/spru655i.pdf

Regards

Shankari G

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TMS320C6655: Error connecting to Target: