TPS65981: Trying to program external SPI configuration FLASH memory but getting verification failed in application customization tool

asdf asdf2

Part Number: TPS65981

Hi,

I have created a custom board design with the TPS65981 and included the W25Q80DVSNIG FLASH memory to hold my configuration. The FLASH memory has never been programmed. I am trying to program my custom TPS65981 configuration to the external FLASH memory so that it will load on power up but have not been successful. I tried to use under device menu: flash app firmware to device but the customization tool indicates SPI flash to device failed verification.

I have my Aardvark connected to the I2C ports on the TPS65981 and it appears that the application customization tool (version 5.13) is able to detect the device at I2C address 0x3F. When I do a test I2C read of mode register 0x3 it returns BOOT as expected since the FLASH memory has not been configured. The test SPI read (offset 0) button in the I2C adapter configuration windows returns success. When I try the flash app firmware to device option, I monitored the SPI lines with a scope and the SPI lines are idle. MOSI and CLK are idle low. MISO and SS are idle high through a 3k pullup to LDO_3V3 which measures at 3.21V. The TPS65981 in this experiment is being powered by an on board regulator and not through the USB-C connector. The USB-C connector is also not plugged in. Reading register 0x2D give a readback: 0x18691207f480f8 if this is or any use.

Am I missing a step or have the part set up incorrectly to program a configuration to the FLASH memory using the application customization tool using Aardvark?

Thank you.

over 5 years ago

0 Kedar_Sirdeshpande over 5 years ago

TI__Expert 3300 points

Hello,

Have you tried to read your SPI flash with Aardvark with the Flash Center utility just to isolate any hardware issues?

Regards,
Kedar

0 Prajith Cheerakkoda over 5 years ago

TI__Expert 8020 points

Hi, Are you seeing electrical activity on SPI data and clock lines when performing "test SPI read (offset 0)"? Could you try SPI read with the latest tool - http://www.ti.com/tool/TPS6598X-CONFIG and upload scope trace of SPI lines ?

Thanks

Prajith

0 asdf asdf2 over 5 years ago in reply to Kedar_Sirdeshpande

Prodigy 150 points

Hi Kedar,

I downloaded the Flash Center utility and was able to read and verify the SPI flash with that tool. When I use the Flash Center utility to read and verify the SPI flash, I observed on the scope that the SPI lines are indeed actively toggling.

0 asdf asdf2 over 5 years ago in reply to Prajith Cheerakkoda

Prodigy 150 points

Hi Prajith,

The SPI data and clock lines are idle when performing "test SPI read (offset 0)". I downloaded version 6.1.1 of the tool and the behavior is the same. No activity on the SPI lines (SS high 3.3V, CLK low 0V, MISO high 3.3V, MOSI low 0V). WP and HOLD on the SPI Flash are also pulled high to 3.3V. One thing to note is that when doing the "Test I2C HI Read (Mode Register 0x03)" test, I see the I2C clock toggling as expected. Same for the Version Register 0x0F test. However, when I do the "Test SPI Flash Read (Address 0x00) test, I do NOT see the I2C clock toggle. It remains inactively pulled high. It appears like the SPI Flash commands are not being transmitted over I2C. Also, it looks like even though the result says Read Success, it looks like the data it read is reported as 0x0 but the data in the SPI Flash is 0xFF since it has never been programmed.

0 asdf asdf2 over 5 years ago in reply to asdf asdf2

Prodigy 150 points

Hi,

When using the Aardvark with the Application Customization Tool, do I need to connect the I2C lines (SDA, SCL) AND the SPI lines as well from the Aardvark to the TPS65981?

0 Kedar_Sirdeshpande over 5 years ago in reply to asdf asdf2

TI__Expert 3300 points

Hello,

The Aardvark's SPI lines should be directly connected to the Flash device. The Aardvark's I2C lines are to be connected to the PD Controller's I2C lines.

I hope this helps.

Regards,
Kedar

0 asdf asdf2 over 5 years ago in reply to Kedar_Sirdeshpande

Prodigy 150 points

Yes, thank you Kedar. It is now working as expected.

0 Kedar_Sirdeshpande over 5 years ago in reply to asdf asdf2

TI__Expert 3300 points

Glad to help!

Regards,
Kedar

Interface

Interface forum

TPS65981: Trying to program external SPI configuration FLASH memory but getting verification failed in application customization tool