C792: Difference between revisions

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[[File:C792-IMG-9541.jpg|thumb|right|C792 front view]]
[[File:C792-IMG-9541.jpg|thumb|right|C792 front view]]
[[File:C792-IMG-9542.jpg|thumb|right|C792 rear view]]
[[File:C792-IMG-9542.jpg|thumb|right|C792 rear view]]
[[File:C792-IMG-9541-Packing_list.jpg|thumb|right|C792 Packing List]]
[[File:C792-IMG-9541-size.jpg|thumb|right|C792]]
[[File:C792-IMG-9541-interface.jpg|thumb|right|C792]]
[[File:C792-IMG-9541-Application.jpg|thumb|right|C792]]
<span class="tb_red">'''Important Notice'''</span>
*This product is designed for advanced Raspberry Pi users and may <span class="tb_red">not be suitable for beginners.</span>
*The Raspberry Pi 5 lacks hardware-accelerated H.264 encoding, resulting in lower image capture performance than the Pi 4B and high CPU usage at 1080p
*For stable operation, we strongly recommend <span class="tb_red">powering the module separately via the 5V power port.</span>
 


==Overview==
==Overview==
The C792 is a HDMI to CSI-2 converter module with HDMI loop out that supports I2S audio output.
The C792 is an HDMI-to-MIPI CSI-2 converter module <font color=red>with HDMI loop out</font> and I2S audio output support.
:'''HDMI Input:''' Supports up to 4K@60Hz, and the HDMI loop-out outputs the same content synchronously as the input.
:'''CSI-2 Output:''' Supports up to 1080p@60Hz (4K input is automatically downscaled to 1080p while keeping the refresh rate).
 
==Working Principle==
The module's hardware architecture consists of the GSV2001 and TC358743: The GSV2001 handles HDMI signal splitting (one channel for loop‑out display, the other to the TC358743 for processing), and the TC358743 performs HDMI‑to‑CSI‑2 conversion.
 
'''HDMI Loop‑out'''
:<span class="tb_red">*When a monitor is connected:</span> The HDMI source detects the physical display.
:<span class="tb_red">*When '''NO''' monitor is connected:</span> The source detects a virtual display (EDID) emulated by the TC358743.


The HDMI input supports up to 4K 60Hz, and the HDMI loop out screen is consistent with the HDMI input screen.
'''CSI‑2 Interface'''
:<span class="tb_red">*15‑pin:</span> 2 data lanes, for Raspberry Pi Zero / 3B / 4B, up to 1080p@50Hz
:<span class="tb_red">*22‑pin:</span> 4 data lanes, for Raspberry Pi CM4 / CM5 / 5B, up to 1080p@60Hz


CSI-2 output support up to 1080p 60Hz (4K screen will be automatically scaled to 1080p, the refresh rate remains unchanged).
{{HDMI to CSI}}


==Hardware Parameters==
==Hardware Parameters==
* Model: C792
*'''Model:''' C792
* Compatible with Raspberry Pi 5B/4B/3B/Zero/CM5/CM4
*'''Compatible with:''' Raspberry Pi 5B/4B/3B/Zero/CM5/CM4
* HDMI input: supports up to 1080P60Hz on Raspberry Pi (Only when use with CM4 /CM5/ Pi 5B)
*'''HDMI input:''' Raspberry Pi hardware is mainly divided into two series, supporting a maximum of either 1080P@60Hz or 1080P@50Hz
* HDMI to CSI-2 bridge chip:Toshiba TC358743XBG
:<span class="tb_red">*Up to 1080P@60Hz:</span> CM3, CM4, Pi 5B
* 2 CSI-2 channels & clock '''(Pi 4B/3B and Pi Zero only support 2 lan, max 1080P1080p50Hz, and  Pi CM4 /CM5/ 5B can support 4 lan, max 1080P1080p60Hz)'''
:<span class="tb_red">*Up to 1080P@50Hz:</span> Zero, Zero 2, Pi 3B, Pi 4B, etc.
* The CSI-2 interface, with 15 pin FPC seat, spacing 1.0 mm, is located on the front of the C792 module.
*'''Size:''' 56 x 56 mm
* The CSI-2 interface, with 22 pin FPC seat, spacing 0.5 mm, is located on the back of the C792 module.
*'''Power supply:''' 5V
* Size: 56 x 56 mm
*'''Weight:''' 25g
* Power supply:5V
* Weight: 25g
 
'''Important note:'''
* The hardware programme is GSV2001+TC358743, in which GSV2001 realizes HDMI one-part-two function and TC358743 realizes HDMI to CSI-2 function.
*  In order to ensure the stability of the module, it is strongly recommended that the module be powered through the 5V power supply interface.
*  When the ‘HDMI Loop Out’ is connected to the monitor, the HDMI source detects the monitor connected to the ‘HDMI Loop Out’; when the ‘HDMI Loop Out’ is not connected to the monitor, the HDMI source detects the monitor connected to the TC358743. When ‘HDMI Loop Out’ is not connected to a monitor, the HDMI source detects the monitor emulated by the TC358743.


==Packing List==
==Packing List==
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[[File:C792-IMG-9541-Packing list.jpg|500px]]
[[File:C792-IMG-9541-Packing list.jpg|500px]]


==User Manual==
==User Manual - C792 / C790 / C779 Software Demo==
<!-- 可以参考bli的说明
<!-- 可以参考bli的说明
https://wiki.blicube.com/blikvm/zh/hdmi-csi-i2s/#demo  
https://wiki.blicube.com/blikvm/zh/hdmi-csi-i2s/#demo  
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{{C792-Software}}
----
Here are a few tutorials:
* Similar Products Guide: [[X1300 Software]]
* Tutorial from customers: [https://github.com/geekworm-com/RPi5_hdmi_in_card RPi5_hdmi_in_card]
* '''Due to the absence of hardware encoding on the Pi 5B, the software usage instructions for Pi platforms are currently divided into two sections: Pi 5B configuration and configuration for other Pi platforms.'''
* '''Due to the absence of hardware encoding on the Pi 5B, the software usage instructions for Pi platforms are currently divided into two sections: Pi 5B configuration and configuration for other Pi platforms.'''
* <span style="color:red">'''Pi 5B platforms HDMI to CSI module test demo reference: '''</span> [[CSI Manual on Pi 5]]
* <span style="color:red">'''Pi 5B platforms HDMI to CSI module test demo reference: '''</span> [[CSI Manual on Pi 5]]
* Refer to: https://wiki.blicube.com/blikvm/zh/C792/
* Possible software problems: [https://github.com/raspberrypi/firmware/issues/1915 ISP freezes with new firmware] and [https://github.com/raspberrypi/firmware/issues/1904 Raspberry Pi 5 firmware ignores and responds with incorrect frame buffer pixel depth information]
 
* Also refer to: https://wiki.blicube.com/blikvm/en/C792/
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[[Category:Product Manual]]
[[Category:Product Manual]]
[[Category:Raspberry pi]]
[[Category:Raspberry pi]]


==FAQ==
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