TDA4VP-Q1: TDA4A\V Variant detection

mohamed elghoury

Intellectual 605 points

Part Number: TDA4VP-Q1
Other Parts Discussed in Thread: TDA4VH, TDA4VL, TDA4VM

Tool/software:

Hello TI,

is there a way to detect the variant of the TDA4 in the runtime like a register or any mechanism?

4 months ago

0 Doredla Sudheer Kumar 4 months ago

TI__Guru 64530 points

Hi,

No register to identify the device variant, Device ID is same for all variants.

What is the use of knowing the device variant at run timer?

Best Regards,
Sudheer

0 mohamed elghoury 4 months ago in reply to Doredla Sudheer Kumar

Intellectual 605 points

Hi,

This is needed to be read in runtime for defining some configuration based on the variant from another cpu/controller.

So there is no way to identify the variant in runtime?

0 Doredla Sudheer Kumar 4 months ago in reply to mohamed elghoury

TI__Guru 64530 points

Hi,

mohamed elghoury said:
So there is no way to identify the variant in runtime?

As per my understanding, we may not get to know at run time.

I have looped our H/W engineer to comment here, if there is any possibility.

Best Regards,
Sudheer

0 kcastille 4 months ago in reply to Doredla Sudheer Kumar

TI__Guru 54402 points

Hi,

There is a way to distinguish parts with different base part numbers, based on JTAG_USER_ID register. This is not documented broadly, since TI SDKs do not support feature enable/disable based on that register.

What exact part numbers are you trying to differentiate?

Thanks,

Kyle

0 mohamed elghoury 4 months ago in reply to kcastille

Intellectual 605 points

Hi,

we just need to know which tda4 variant is running the low, mid or the high

0 kcastille 4 months ago in reply to mohamed elghoury

TI__Guru 54402 points

Mohamed,

Just to confirm ... TDA4 "high" usually refers to TDA4VH88. TDA4 "mid" usually refers to TDA4VM88. TDA4 "Low" (aka Mid Eco?) refers to TDA4VE88. Is that what you're looking for? Referring to the data sheets:

High:TDA4VH-Q1, TDA4AH-Q1, TDA4VP-Q1, TDA4AP-Q1 Jacinto Processors datasheet (Rev. B)

Mid: TDA4VM Processors datasheet (Rev. K)

Low: TDA4VE TDA4AL TDA4VL Jacinto Processors, Silicon Revision 1.0 datasheet (Rev. B)

To differentiate across the superset devices you can use the JTAG_ID, that is in the device TRM.

E.g., TDA4VH JTAG_ID:

Regards,

Kyle

0 mohamed elghoury 4 months ago in reply to kcastille

Intellectual 605 points

Hi,

and what is the expected value to be read from this register for each variant?

+1 Doredla Sudheer Kumar 4 months ago in reply to mohamed elghoury

TI__Guru 64530 points

Hi,

Please refer to the TRM for the JTAG ID of each variant.

I have provided the JTAG ID data of each variant below for your reference.

TDA4VL:

TDA4VM:

TDA4VH:

Best Regards,
Sudheer

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TDA4VP-Q1: TDA4A\V Variant detection