AM2432: Soc Initialization

Hi,

Thanks for your query.

Can you please tell us which device are you using? It is GP or HSFS?

To check device type, please refer faq-am6xx-how-to-check-if-device-type-is-hs-se-hs-fs-or-gp 

Regards,

Tushar

Hello Tushar

Thanks for response.

I am using regular AM2432-ALV package.

Please tell me if the GP and HSFS are fixed from production.

I will try to connect the UART port0 pins by jumpers to setup the UART terminal later.

Can you please share me more details for the tips to connect to JTAG prober for this 2 kinds of devices?

Thanks.

Hi Hao,

Hao Wang said:

Can you please share me more details for the tips to connect to JTAG prober for this 2 kinds of devices?

For GP device, the EVM needs to be in the NO Boot mode instead of DEV Boot mode. The script(load_dmsc_hsfs.js) which you are running is meant to be run from the HSFS device. It will not work in GP device.

For HSFS device, the EVM needs to be in DEV boot mode and the load_dmsc_hsfs.js script needs to be run.

So, please confirm what device type are to using to move forward.

Regards,

Tushar

Tushar

In my board debugging, the TDS110 JTAG prober cannot connect to Cortex C5.

I can detect 3.3V, 1.8v and 0.85V supplies. But cannot verify the powerup sequence. And cannot detect toggling on REFCLK output pin.

What else do you think I would try to make the Soc wake up?

Hi Hao,

Can you provide the screenshot of error with complete error logs?

Are you able to identify which device are you using? Is it GP or HSFS?

Regards,

Tushar

Tushar

Can you please tell me which js file I need to run if my device is GP device?

Thanks.

Thanks & Best regards

Hao (Wang hao)

Hello Hao,

You will need to run the load_dmsc.js file, if you have a GP device.

Regards,

Tushar

Tushar

There are 2 js files in this CCS_LOAD folder.

C:\ti\mcu_plus_sdk_am243x_09_02_00_50\tools\ccs_load\am243x

One is load_dmsc_hsfs.js, the other one is load.js.

There is no load_dmsc file you suggest.

Please tell me where to find it.

Thanks.

Thanks & Best regards

Hao (Wang hao)

Hi Hao,

This file is not available on SDK version >= 9.0. You can find the load_dmsc.js script on older version of SDK(i.e. v08.06.00.45)

Regards,

Tushar

Tushar

I have tried both js files.

The results are same.

I can get the reasonable powerup sequences.

But the current loading from the 5V power supply is about 70mA. Is this normal?

It looks like the soc is not waken up.

And I cannot detect the toggling from CLKOUT0, OBSCLK0, SYSCLKOUT0, MCU_OBSCLK0, MCU_SYSCLKOUT0 pins.

Should these pins toggle if proper boot mode for PLL is setup when soc power up?

Will you please advise what else I can check?

Thanks.

Thanks & Best regards

Hao (Wang hao)

Hi Hao,

Can you please try different boot mode settings? Keep the EVM in UART boot mode and power up the EVM and check are you able to see the UART string?

Also can you please confirm the LED's on the EVM are glowing as expected?

Can you check with different EVM?

Regards,

Tushar

Tushar

I know the issue.

I ignore the reset pin in power up.

The reset pin needs to be driven low and dessert after Soc power up.

I have routed the reset input pin out of the BGA package.

Can you please share sample solution to implement the reset action if available?

Thanks.

Thanks & Best regards

Hao (Wang hao)

Hello Hao,

I really don't understand the above points.

Please clarify points below.

Is the customer  not using the JTAG RST pin on their hw ?

Is the customer  not using the MCU_PORz pin on their Hw ?

Both pins are floated ?

Regards,

Anil.

Anil

The MCU_PORz pin is pulled down.

I know this issue. The POR pin needs to be reset when boot the Soc.

I designed a sample RC circuit to implement the delay ramp up for MCU_PORz pin.

The approach can work on my board.

The Soc can be booted through USB now.

JTAG RST pin is pulled down.

All the other JTAG pins are pulled up.

I think this is correct.

Thanks.

Thanks & Best regards

Hao (Wang hao)

Hello ,

I am looking at your queries and you may expect reply by Monday .

Regards,

Anil.

Hello Wang, 

I received feedback from HW experts that we are not supposed to insert any RC delay circuit to the PORz pin. Please have the HW schematic reviewed by the HW experts.

Regards, 

Anil.