DS90UB947-Q1: Some questions about DS90UB947-Q1

Hi Charlie,

Charlie Xiao said:

1. The SPI description of 947 has "The SPI Control Channel utilizes the secondary link in a 2-lane FPD-Link Ill implementation", so is the SPI control transmitted through STP or coax? Why is there a separate SPI pin connected out， Is this connected to my console?

You can configure SPI in either coax or STP mode. What do you mean by connected to your console? Do you mean the MCU/SoC? If so, yes.

Charlie Xiao said:

2. If the pins of repeater-related functions are externally connected to the deserializer, can it be done through an ordinary bus?

Could you maybe rephrase this question explain what you mean by "can it be done through an ordinary bus?".

Charlie Xiao said:

3. What is the function of I2C in the repeater? Isn't it possible to pass information through the forward or backward channel? Why are there the following two solutions?

It is possible to pass info in either direction when the serializer and deserializer are connected to each out via FPD-Link. However, in repeater mode, the deserializer is the host and information can only be passed in one direction.

These images depict different things. What differences are you referring to?

Best regards,

Melissa

Hi Melissa,

Thanks for your support. And sorry for my unclear expression.

Could you maybe rephrase this question explain what you mean by "can it be done through an ordinary bus?".

RE: Can the pins of the repeater related functions be connected to the deserializer through a common bus?

These images depict different things. What differences are you referring to?

RE: Why are there two different connections:

Regards,

Charlie