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Calvin
Participant
Participant
218 Views
Registered: ‎09-28-2020

MIPI CSI2 RX Subsystem IP

Hi,

For a Sensor which is MIPI CSI2 complaint, the total pixel area including blanking is 3200x2000 and the active area(Image data) is 1924x960. The sensor output is fed to a MIPI RX subsystem IP. 

Will the blanking period(line blanking and frame blanking) on the AXI stream interface of the MIPI CSI2 RX Subsystem IP be exactly same as blanking period of the sensor output?

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florentw
Moderator
Moderator
212 Views
Registered: ‎11-09-2015

HI @Calvin 

In AXI4-Stream interface, there is no real notion of blanking period. The pixels are transmitted when the source is ready to send them and the sink ready to accept them.

So no there are no guarantee that the blanking period will be present with the same "shape".


Florent
Product Application Engineer - Xilinx Technical Support EMEA
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Calvin
Participant
Participant
208 Views
Registered: ‎09-28-2020

Hi @florentw!

Thanks for the reply!

Will the timing for 1 line and/or 1 frame be maintained?

Say sensor sends 40fps output will this timing be maintained at the output of MIPI CSI2 RX IP?

 

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florentw
Moderator
Moderator
200 Views
Registered: ‎11-09-2015

HI @Calvin 

It depends on the clock you are using. But if the clock is fast enough (thus you do not get fifo overflow in the MIPI CSI2 RX IP) then all the pixel receive will be transmitted.

But there is also no real notion of frame rate. This is about pixel available/transmitted


Florent
Product Application Engineer - Xilinx Technical Support EMEA
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florentw
Moderator
Moderator
124 Views
Registered: ‎11-09-2015

HI @Calvin 

Is everything clear for you on this topic?


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**