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TMS320F28379S: CLB Output Selection

Luke Chen

Expert 5090 points

Part Number: TMS320F28379S
Other Parts Discussed in Thread: C2000WARE

Hi experts,

According to TRM, the CLB outputs go to the ePWM, eCAP, eQEP and the crossbar module in the device.

If my customer wants to connect CLB1_OUT0_1 to EQEP1 QA, how should he configure CLB_OUT_EN_REG register? Do we have detailed description of CLB_OUT_EN_REG register for reference please?

Regards,

-Luke

over 3 years ago

0 Aditya Dholakia over 3 years ago

TI__Expert 6920 points

Hi Luke,

The register setting can be done using the API - CLB_setOutputMask() where the value for enabling the CLB1_OUT0_1 can be fed from the 15 available options. (OUT0_1 is 8)

The customer can go through the TRM section 26.3.3 CLB Output Selection and also the driver clb.h for detailed description.

Thanks,

Aditya

0 Luke Chen over 3 years ago in reply to Aditya Dholakia

TI__Expert 5090 points

Aditya,

Do you mean in CLB_OUT_EN register, CLB1_OUT0_0 is bit-0, OUT7_0 is bit-7 and OUT0_1 is bit-8, and so on?

So, if customer set bit-8 and bit-9 in CLB_OUT_EN register, then CLB1_OUT0_1 and CLB1_OUT1_1 will be connected to EQEP1, is this correct?

Regards,

-Luke

+1 Aditya Dholakia over 3 years ago in reply to Luke Chen

TI__Expert 6920 points

Luke,

You got it right.

We have some examples in C2000Ware demonstrating the usage of this function. The customer can take that as reference.

Thanks,

Aditya

0 Luke Chen over 3 years ago in reply to Aditya Dholakia

TI__Expert 5090 points

Aditya,

My customer is facing the problem connecting CLB1_OUT0_1 and CLB1_OUT1_1 to EQEP1 QA and QB, please refer to below link.

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1048471/tms320f28379s-clb-output-signal-to-qep/3879455#3879455

Via below thread, it seems that there is something wrong with TRM CLB output selection table.

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/884926/ccs-tms320f280049c-eqep-input-from-clb-module/3273585

Please help to check if there is anything wrong in the table, thanks for help.

-Luke

0 Aditya Dholakia over 3 years ago in reply to Luke Chen

TI__Expert 6920 points

Luke,

Let me get in the hardware expert here to validate customer's issue.

Thanks,

Aditya

0 Peter Luong1 over 3 years ago in reply to Aditya Dholakia

TI__Genius 13881 points

Hi Luke,

Please refer to the update I posted in the other E2E thread.

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1048471/tms320f28379s-clb-output-signal-to-qep/3880928#3880928

There indeed is an issue within the TRM and this will be updated in a future release of the document.

Regards,

Peter