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DS90UB936-Q1: Questions when operation with DS90UB935-Q1

Rory Wu
Intellectual 1050 points

Part Number: DS90UB936-Q1
Other Parts Discussed in Thread: DS90UB935-Q1

Hi team,

My customer used DS90UB935-Q1 and DS90UB936-Q1, can you please help for below questions:

1. How to check if DS90UB935-Q1 and DS90UB936-Q1 is hardware connected successfully and normal operation?

2. How to detect the abnormal image from sensor when operation?

3. When UB936 connected with two UB935, when one RX can not work normally, how to switch to another one?

4. How to increase the speed of I2C config process of UB935 and UB936?

5. In operation, if manually disable sensor then enable it, any action required for 935/936 to recover the image?

Thanks for the kind help:)

BR,

Rory 

  • 0
    TI__Intellectual 1050 points

    Please refer to below BD of the system. SoC is Ambarella H22.

    \

    BR,

    Rory

  • 0 in reply to Rory Wu
    TI__Intellectual 2930 points

    1. Are you connecting i2s audio into GPIO of 935?

    2. In order to ensure that the system hardware is up and running, follow the below steps:

       1. Ensure you have i2c access first 

       2. Be sure to read some registers from 936 and from 935 as from the Imager thru i2c

       3. Register access to the remote side (access to 935 and to the Imager can only be possible) after the link is established. This is indicated by the LOCK signal on 936 going High

       4. Check for CRC errors on the MIPI side on 935.

       5. Check for Parity errors on 936 side (Reg0x55 and Reg0x56)

       6.  Ensure there are no errors in Reg0x4D

       7.Read Reg0x4E for any sudden line length changes etc to detect abnormal camera output

    Thanks

    Vijay