DS90UB935-Q1: Forward Channel Bandwidth and Information

Hi Rajj,

Rajj said:

1. What is the maximum usable bandwidth on Forward channel of the FPD-link III out of the 3Gbps?

What is the resolution, FPS, and data type you are planning on using? Then I can provide guidance on which device to use. 

Rajj said:

2. Does the link uses bandwidth depends on the Datatype and resolution of the video? or uses full bandwidth irrespective of these settings. 

Always uses full bandwidth. 

Rajj said:

3. What are the other data send via Forward channel of the FPD link other than payload (video) data? 

We can use FC to send GPIO data. If you elaborate further, I can provide guidance. 

Resolution : 1920x1536, 30FPS, YUV422

Need to know FC utilization for different information sharing like I2C interface, GPIO data sharing, link handshake etc. so that effective utilization by video data known. This helps to ensure the channel is not overflown.

For our parts the video bandwidth is fixed during GPIO and I2C.