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AWR1243: data packet packing format for RAW8 mode (8-bit)

Kzk
Genius 5785 points
Part Number: AWR1243

Hello Experts,

We're developing a system with AWR1243 and TDA3. Please refer to the following thread. Could you do me a favour?

https://e2e.ti.com/support/arm/automotive_processors/f/1021/t/691719

Figure 6-5 on page 31 of AWR1243 data sheet (SWRS188) has an example of 12-bit data packet packing format. Could you provide a figure for the case of ADC 16-bit with RAW8 mode?

Regards,
Kazu

  • 0
    TI__Mastermind 21025 points

    Have you tried setting the 16bit mode and testing with it?  Do you not see the data as described:

    >So when we set the CHAINS_AR1243_ADC_DATA_FORMAT (16U) the 16 bit ADC value is sent out over CSI. The data is arranged in DDR as 16 bit I data followed by 16 bit Q data.

    >The CSI protocol will send it such that the LSB 8 bit of 16 bit I data first, MSB 8 bit of 16 bit I data, LSB 8 bit of 16 bit Q data, MSB 8 bit of 16 bit Q data.

  • 0 in reply to db_woodall
    Genius 5785 points

    Hello,

    Thank you for your reply.

    db_woodall said:

    Have you tried setting the 16bit mode and testing with it?  Do you not see the data as described:

    >So when we set the CHAINS_AR1243_ADC_DATA_FORMAT (16U) the 16 bit ADC value is sent out over CSI. The data is arranged in DDR as 16 bit I data followed by 16 bit Q data.

    >The CSI protocol will send it such that the LSB 8 bit of 16 bit I data first, MSB 8 bit of 16 bit I data, LSB 8 bit of 16 bit Q data, MSB 8 bit of 16 bit Q data.

    I haven't seen the data yet. However, since the explanation above is advice from TIer, isn't it correct? I'm a little confused. I'd like Figure 6-5 in RAW8 mode. Please help me.

    Regards,
    Kazu

  • 0 in reply to Kzk
    Genius 5785 points

    Hello Experts,

    When I asked the TDAx ADAS Forum as below, I got a bit of information on the data format of AWR1243 CSI2 RAW8. Is it possible to update Figure 6-5 for RAW8?

    e2e.ti.com/.../2564173

    Regards,
    Kazu

  • 0 in reply to Kzk
    TI__Mastermind 21025 points

    Hi,

    Attached is the requested table.

     -dave

    CSI2_16_Raw8_format.pdf