Datasheet

27 SERDESUB-21USB User’s Guide SNLU101 – April 2012

C Communication over Bi-directional Control Channel in

Camera Mode

This section provides instructions for a simple I

C Read/Write transaction over the bi-

directional control channel validating the interface between the host and Deserializer to

Serializer.

1) Check the Deserializer SER DEV ID register 0x07 contents

2) The value entered in Deserializer register 0x07 sets the target Serializer device to

communicate with. Load the Serializer slave address register.

3) Host controller to load and transmit data byte to Serializer address 0xB0

4) For verification purposes Serializer register 0x13 General-purpose register will be

exercised for reading and writing data. Other Serializer registers can be

programmed to check internal functions; such as register 0x03 b[0] TRFB.

5) Host controller to load and transmit write transaction to register byte 0x13 = 0xFF.

Note default of register 0x13 = 0x00.

6) Host controller to read back Serializer 0xB0 register 0x13 = 0xFF