Hi team,
In the process of using DS90UB929 and DS90UB928, customer encounter the following problems:
1. When the processor HDMI is not output, that is, DS90UB929 does not detect TMDS clock, LOCK signal of DES is high and I2C communication of SER/ DES is normal;
2. When the processor HDMI output 720P60, that is, DS90UB929 detects TMDS clock (reg0x0c [2] = 1), the LOCK signal of DES is low, and the I2C of DES cannot be accessed
The figure below shows the register value of DS90UB929 in the second case. Could you provide any debugging ideas? Thank you in advance.
