DS90UH948-Q1: DS90UH948-Q1 Design question

Lawrence,
please check below feedbacks.
Q1: DS90UH948 not only be configured by I/O pin , but also by register through I2C , Do we need a I2C flash for initial register program? Or it should be program by host through HSD?
TI: dependent on your system request. in most cases, the Ux948 can work with strap I/O pins for some default status. But you also can visit Ux948 through local MCU or remote I2C mode from the serializer side (such as Ux947).

Q2: If register program is recommend, what recommend for the sequence of program time and power on ?
TI: For the high speed link, in the de-serializer side Ux948, it is better if you can reset it after the receiver signal is stable.

Q3: there are four D_GPIO(share with I2S) and eight GPIO, means total 12 GPIO can be used, but we saw “ The back channel contains the I2C, CRC and 4 bits of standard GPIO information with 5 or 20 Mbps line rate (configured by MODE_SEL1). “ is described in datasheet? Do it means only 4 D_GPIO can support backward transmit?
TI: please see D-GPIO description in d/s, these signals are transmitter through the second FPD-Link channel.

Because it is first we use this deserializer , so if any mis-understand and have wrong question on above, just correct me, thanks in advance.


Q4. have ever seen similar design which used in automotive can share to us for reference.
TI: UB948 is designed for automotive market, almost all 1080P display panels are based on Ux948.


best regards,
Steven