DS90UB964-Q1: Ub964 communicates with UB913

Hi Xueze,

The first step is to make sure that the UB964 and UB913 devices are all LOCKed to each other. If the MODE settings on the deserializer & serializers match and there are no issues with the PCB or cable, then they should LOCK.

To setup slave addresses for the connected serializers, refer to the following steps in the UB964:

1. Select one of the RX Ports to configure in register 0x4C, by setting the bit for RX_WRITE_PORT_x and configuring RX_READ_PORT
2. The 7-bit I2C address of the connected serializer at the selected RX port will be shown in register 0x5B.
3. The 7-bit I2C alias address of the serializer at the selected RX port will be shown in register 0x5C. Change register 0x5C[7:1] to a unique value. When you write to the 8-bit address (perform a 1-bit left shift operation on the 7-bit address), the I2C command will be remapped to the I2C address defined in register 0x5B.
4. Also make sure to enable I2C_PASS_THROUGH in register 0x58.

Best,

Justin Phan