Nano CSI-2 configs

Autonomous Machines Jetson & Embedded Systems Jetson Nano
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#1

Hello,
Please Guide me carefully and confidently
I’m designing a carrier board for the jetson nano Module, this carrier board has 3 MIPI CSI2x4 Sensor interface (the sensor is the same for all three CSI2 Channels).

1_ There is no clear info about ISP block. How many ISPs are there?

2_ In Nano Datasheet, section 1.4, ISP capabilities listed. Some features are per-channel. What does it mean?
For example “Per-channel black-level compensation” is per-channel
and “Color and gamma correction” is not per-channel.
So when I use three 4lane camera, Can “Color and gamma correction” only be applied to one camera stream? Or is it available for all three cameras simultaneously?

3_ Due to the I2C slave address conflict, When three identical sensors are connected, we should to use I2C multiplexer or I2C switch? For example TCA640x series or TS3USB30E.
4_ Is this possible to use three different I2C? any suggestion

#3

hello nimadibaj,

  1. according to Product Design Guide, your use-case of three quad-lane camera streams was supported. please also access Nano Module Data Sheet and check [Chapter-1.4 Image Signal Processor (ISP)] for some details.

  2. suppose you’re having bayer sensor output with RGGB, per-channel black-level compensation means process it with R, GR, GB, B; color correction and gamma correction did not based-on this assumption.

  3. and 4. you can enable I2C multiplexer to share the i2c address. please also refer to Topic 142044 for an example.

1 Like
#4

Thanks.
1_I will use I2C0 and I2C1 and CAM1_I2C for three identical sensor instead of using I2C multiplexer. Any problem?

2_All ISP function is available for my three sensor simultaneously?

#5

hello nimadibaj,

  1. you may ignore i2c mux if the camera modules have unique I2C addresses and the routing on a single I2C interface would not adversely affect the signal quality,
    please also check Camera Design Guide for the recommendations and guidelines of Nano/Nx camera connector.

  2. please refer to Camera Architecture Stack, the ISP process is involved if you’d enable MIPI-CSI sensors and access with libargus.

  3. please note that, we don’t provide supports via forum discussion thread for sensor calibration or image quality tuning;
    you should contact with Jetson Camera Partners, or checking Jetson Partner Supported Cameras for the list of cameras support on the Jetson platform.
    thanks

#7

Hi Jerry,
How to get Nvidia’s support for sensor calibration or image quality tuning?

#8

hello ky.lee,

please contact with NVIDIA sales team to engage the resources.
thanks

#9