This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DS90UB953-Q1: I2C link

Part Number: DS90UB953-Q1

Hi Team,

3j3, single j3, is a motherboard made with the number of Horizon j3 CPU, this has no remarks. The connection of the hardware is as above.
1. The position marked with an asterisk is the i2c connection of TI953. When the video output function is normal, the connection between TI953 and 3j3 needs to be disconnected, but it cannot work normally at low temperature of -40 degrees.
2. If the position marked with the asterisk, that is, the i2c hardware of TI953 and 3j3 is connected, when the low temperature is -40 degrees, the i2c load of 3j3 can see that TI953 can work normally, but at this time, the load on the i2c address on j3 (is also the load on 3j3), the i2c address of the TI960 on j3 cannot be seen at this time, and the video output function is not normal. Do we have a solution for this hardware design?