Other Parts Discussed in Thread: TPD6S300
Hi all,
My customer use TUSB1064 in their docking product. We test GPIO and I2C control, but
1. There's only 1 side (FLIP = high) with DP display. If Flip = low, we will not see display on DP monitor.
2. When we bypass aux signal, DP can be display... (connect AUXP/AUXN signal to AUXn/AUXp directly)
About the impedance on AUX / SBU trace, there's 2M pull down near connector, 2M pull down near TUSB1064's SBU, and another 1M pull up / pull down resistor is near DP bridge IC.
In ok condition, we can see aux signal is 0.06V / 3.26V. But in failed condition, aux signal is 1.68V/1.68V. If without I2C control, can we know why we get the different result? (In both condition, U3 signal is ok).
Best regards,
Gary Teng