• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 363 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DS90UB964-Q1: CSI-2 forwarding mode of DS90UB964

ZYT
Intellectual 350 points
Part Number: DS90UB964-Q1

Dear Sir,

I have a question:

four OV10640+OV490+DS913  connected to a DS964 , configured with DS964 in 4 channel framesync mode, and the synchronous signal is generated by DS964 internally generated framesync (GPIO0/GPIO1 outputs frame sync to sensor module). The CSI-2 forwarding mode is configured to best-effort round , the prototype is work;

 But when the CSI-2 forwarding mode is configured to basic synchronized forwarding. there is no image output , The status register values are as follows:the red arer abnormal.

reg=0x35 val=0x0  successed!

reg=0x36 val=0x0  successed!
reg=0x37 val=0x3  successed!
reg=0x4d val=0xc3  successed!
reg=0x4e val=0x14  successed!
reg=0xda val=0x0  successed!
reg=0xdb val=0x10  successed!
reg=0x73 val=0x2  successed!
reg=0x74 val=0xd0  successed!
reg=0x75 val=0xa  successed!
reg=0x76 val=0x0  successed!
reg=0xb9 val=0x3  successed!

 

i want to know the detail reason about this, thanks a lot.

 

  • 0
    TI__Guru** 108190 points
    Hello,

    for using Synchronized forwarding there are some requirements:
    1) Video arriving at input ports should be synchronized within approximately 1 video line period
    2) All enabled ports should have valid, synchronized video
    3) Each port must have identical video parameters, including number and size of video lines, presence of synchronization packets, etc.

    For details please see the 964 datasheet pages 33, 34. There you have also a code example for setting Synch forwarding mode.