JAJSMU1 February 2023 DS90UB638-Q1
PRODUCTION DATA
When initializing the communications link between the DS90UB638-Q1 deserializer and a DS90UB635-Q1 serializer, the sensor module requires a local reference clock and timing would follow Figure 9-3.
Note that in order to speed up access to remote target I2C devices attached to the DS90UB635-Q1 from the DS90UB638-Q1 deserializer device, it is recommended to program the watchdog timer speedup by setting 0x0A = 0x12 after LOCK is established with the remote deserializer.