TPS65988DK: GPIO configuration and HW register anomaly

Jako Aimsalu

Part Number: TPS65988DK

Hi!

I tried to set GPIO14 and 15 alternate function to PWM with Application configuration tool (6.1.4) via DH advanced setting with swapped FW. But when I uploaded that on the IC GPIO configuration (0x5c) is incorrect.

Raw value of register 0x5c in App conf 0x9001200000000000000032729000000002a0000000000000000000000000003c0080000000000000000000000000002b0e7 where MUX select bytes 17-20 with value 0x000003c0 doesn't switch gpio14 and 15 to alternate function.

Running that generated binary GPIO 14 is input and GPIO15 is output with attached event SourcePDO0ContractBit0_Port2.

Another thing to note Host Interface Technical Reference Manual says that HW control register (0x6b) is 9 bytes, in App conf it is 12 bytes, but actually reading that register says that it is 10 bytes in size.

over 1 year ago

0 Christodulos Tsongas over 1 year ago

TI__Genius 10250 points

Are you using an TPS65988DK EVM? Or are you trying to flash your own board?

Can you elaborate on :

Jako Aimsalu said:
with swapped FW

what FW are you using?

Also just to be sure, you are fully powering down the TPS65988DK after loading the new configurations? Otherwise they will not take effect.

0 Jako Aimsalu over 1 year ago in reply to Christodulos Tsongas

Prodigy 20 points

I have my own board and flashed SPI Flash with separate tools and then powered on. Also tried I2C flashing method with extra reboot. Selected TPS65988DH Advanced as a template and changed FW to f907.14.14.

0 Christodulos Tsongas over 1 year ago in reply to Jako Aimsalu

TI__Genius 10250 points

Jako,

The flashed config may be a bit off or I may be misunderstanding. You should be using a TPS65988DK config for the TPS65988DK device. The FW version is OK though. What GUI version are you using?

Also you can run a quick test. We have Customer Use register (0x6) Words 1 and 2 are 32-bit values. Write a unique value here, flash it, then read it back. If you read-back your settings then it is flashed properly. If you readback different values then flashing may not have taken effect.

Thanks,

Chris

0 Jako Aimsalu over 1 year ago in reply to Christodulos Tsongas

Prodigy 20 points

GUI version 6.1.4. I already confirmed flash success with customer word and it works perfectly.

0 Christodulos Tsongas over 1 year ago in reply to Jako Aimsalu

TI__Genius 10250 points

Jako,

Thanks for confirming. You should probably upgrade to the latest GUI 6.3.6. Gain access via this link:

https://www.ti.com/licreg/docs/swlicexportcontrol.tsp?form_id=302387&prod_no=TBTDEVICE-DESIGN&ref_url=app_psil_pi

I think the issue may be the older GUI does not support the TPS65988DK properly.

Thanks,

Chris

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TPS65988DK: GPIO configuration and HW register anomaly