TDA4VE-Q1: program efuse through external SD card

Hi Grace,

full log would be as below.  

First, can you confirm if VPP (#H22) is supplied to 1.8V?

regards,

Lloyd

VPP (#H22) is supplied to 1.8V, but H22 and V22 are connect together with VDDA_xx signals. Will this cause any issue? 

At which stage shall we power up 1.8v? Our current sequence is 3.3V -> 1.8V -> 0.8V -> 0.85V -> 1.1V -> release RST. Thanks.

HI Zhang,

First we need to understand why TIFS version logs are not coming. I assume you are using wrong TIFS binary.

Can you help me with couple of question :

• What is device type , You can use this FAQ to get the device type.
• Please share complete steps , which you followed for building keywriter application.

Regards
Diwakar

Hello Diwakar, The device type is HS-FS. I am still waiting for the confirm about the SD create steps. I have read back the SD card content. Can I confirm the TIFS by the read back content of the SD card? Thanks.

HI Zhang,

I am still suspecting TIFS key writer binary which they have used. Once we have the information on steps followed to build keywriter image we can debug further.

Also can you add a dummy loop in the main function and then use JTAG to see where exactly is getting stuck.

Regards
Diwakar

They confirmed that there is no problem with the SD card they are using.
I used the same SD card on a customer board and got the following UART logs.
Could you please check what else could be causing the issue?

[First attempt - success]

OTP Keywriter Version: 02.00.00.00 (Apr 18 2025 - 10:22:16)

OTP Keywriter ver: 8.4.6-v08.04_keywriter (Jolly J
OTP_SciClientInit
READ BOARD_MCU_GPIO12_PINMUX_ADDR: 0x00050007
VPP enable
Key programming sequence initialted
Taking OTP certificate from 0x41c7f004
Debug response: 0x0
Key programming sequence completed

[retry]

OTP Keywriter Version: 02.00.00.00 (Apr 18 2025 - 10:22:16)

HI HeeA Lee

HeeA Lee said:

[First attempt - success]

In the first attempt as you are getting a debug response as 0x0, that means fusing of the keys is successful and the device got converted to HS-SE.

If you re run the keywriter on the same device again it will not work. Keywirter is intended to use on HS-FS device only.

Key programming sequence initialted
Taking OTP certificate from 0x41c7f004
Debug response: 0x0
Key programming sequence completed

That is the reason my first question was what is the device type.You can follow the FAQ to get the device type.

Diwakar Dhyani said:

• What is device type , You can use this FAQ to get the device type.

Regards
Diwakar

Hello Diwakar,

I can get below log, does it mean program failed? Thanks.

[16:23:15.461]IN←◆OTP Keywriter Version: 02.00.00.00 (Apr 18 2025 - 10:22:16)

OTP Keywriter ver: 8.4.6-v08.04_keywriter (Jolly J
OTP_SciClientInit
READ BOARD_MCU_GPIO12_PINMUX_ADDR: 0x00050007
VPP enable
Key programming sequence initialted
Taking OTP certificate from 0x41c7f004

[16:23:15.912]IN←◆Sciclient_otpProcessKeyCfg returns: -1
Debug response: 0x10000
Key programming sequence completed

[16:24:26.363]IN←◆\0

To get this log by changed VDD_MCU = VDD_CORE = 0.8V, VDDAR_MCU = VDDAR_CORE = 0.85V, what could be the reason for the program failure? Thanks.

HI Zhang,

I am not the hardware expert , but just want to understand why we have made above changes as we already have working case here :  RE: TDA4VE-Q1: program efuse through external SD card 

Regards
Diwakar