JAJSMU1 February 2023 DS90UB638-Q1
PRODUCTION DATA
The bidirectional control channel (BCC) supports 10-Mbps operation when attached to the DS90UB63x-Q1. The bidirectional control channel is compatible with I2C devices, which allows local I2C target access to device registers as well as bidirectional I2C operation across the link to the serializer and attached devices. I2C access should not be attempted across the link when Rx Port Lock status is low. In addition to providing BCC operation, the back channel signaling also supports GPIO operations and advertising device capabilities to the attached serializer device. The default back channel frequency is selected by the strap setting of the MODE pin.