Hi team,
Could you please help for this issue?
1. There is a very low probability that 913 and 914 can shake hands and communicate, and the Lock signal is normal but the video transmission is abnormal.
2. The value of register 0x05 is read when it is abnormal (the value is also 0x14 when it is normal)
3. After resetting the 914 chip, the fault remains.
4. Reset the 913 chip to return to normal.
5. After rewriting the register 0x05=0x21, the video transmission can return to normal.
6. The probability of failure of the faulty parts is very high at room temperature, and the probability is very low at -40 degrees, and the high temperature of 85 degrees hardly appears.
7. The hardware tests the power, clock, reset and other signals without any abnormalities.