• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 30 subscribers
  • Views 253 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.

AM62x, AM68x, AM69x: Split VPAC at multiple Camera

Stefan Göggel
Prodigy 20 points
Other Parts Discussed in Thread: AM69

Dear Support,

The data sheets indicate in each case:

- AM62x: 315MPixel/s, 1x CSI-2 4L
- AM68x: 480MPixel/s, 2x CSI-2 4L
- AM69x: 2x480MPixel/s, 3x CSI-2 4L

1. AM62x: If I want to connect 2 cameras here, I saw that a bridge can be used. Is the ISP then divided equally? (157MPixel/s per camera)?
2. AM68x: There are already two camera interfaces here. Is the ISP split when using both interfaces? If so, half and half?
3. AM69x: 2x VPAC and 3x interface are specified here. How is the ISP divided here if 2 or 3 cameras are connected?

Many thanks for your support!

regards
Stefan

  • 0
    TI__Guru**** 475655 points

    Hi Stefan,

    ISP works in memory-to-memory mode, so yes, as such it can be equally divided. I think ISP does support saving and restoring context on these devices, so its possible to support heterogenous camera.. 

    Regards,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Prodigy 20 points

    Thanks a lot for your reply!

    The Information has taken me one step further.

    Does this mean that if I multiply the CSI-2 interface with a splitter bridge, the ISP will be configured according to the connected camera chip?

    Example:
    ISP: 315MPixel/s (AM62Axx)
    Setup:
    1 IN - 2 OUT splitter bridge (CSI-2).
    1st camera: 2MP @ 60fps
    2nd camera: 5MP @ 30fps
    Result:
    1st camera --> 120MPixel/s
    2nd camera --> 150MPixel/s
    (margin: 45 MPixel/s)


    If this is the case, what is the advantage of the AM69A98 with 2x480MPixel/s? Is this identical to a theoretical ISP of 960MPixel/s?

    Many thanks!

  • +1 in reply to Stefan Göggel
    TI__Guru**** 475655 points

    Hi,

    ISP works in memory to memory mode and it needs to be configured (or reconfigured). What i meant was, yes, it can handle/support multiple types of camera as long as configuration (reconfiguration) is taken care. 

    Yes, AM69 has two ISP and it provides more ISP throughput, with some additional features as well. Please refer to TRM/specs for more details. 

    Regards,

    Brijesh