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.

DS90UB941AS-Q1: port 1 cannot access remote slave over I2C

Part Number: DS90UB941AS-Q1

Hi experts,

My customer cannot access the remote touch panel over I2C from 941 side. The application is 941 in independent 2:2 mode, 948 port 0 is connected to 941 port 1. Could you please help to check below 941 configuration, is there any other 941 register or 948 register need to set? Thank you.

 

941:

WriteI2C(0x1e, 0x02) # Select port 1

WriteI2C(0x03, 0x9A) # Enable I2C pass through

WriteI2C(0x07, 0x48) # Set slave ID, touch panel I2C address is 0x24

WriteI2C(0x08, 0x46) # Set slave alias ID 0x23

Use alias ID to access the touch panel

Arie