C790

C790 Optional Accessories

C790 Pin Description

C790 Front

C790 Back

C790

C790 application

Overview

C790 is an upgraded version of C779, C790 has made the following upgrades.

Solved the issue of back powering of HDMI IN interface
New added interface to support I2S audio
C790 supports CSI-2 2 lane and 4lane at the same time

Geekworm HDMI to CSI Module Series:

Convert HDMI signal acquisition into CSI signal and I2S audio signal. The maximum capture resolution depends on the HDMI to CSI converter board as well as the Raspberry Pi hardware.

Raspberry Pi hardware are primarily divided into two series, one supporting a maximum of 1080P60Hz and the other supporting a maximum of 1080P50Hz.

Raspberry Pi versions that support up to 1080P60Hz: CM3, CM4, Pi 5B
Raspberry Pi versions that support up to 1080P50Hz: zero, zero2, Pi3B, Pi4B, etc.

Model	Description	Max Input Resolution	I2S Audio	HDMI Capture Chip	PCB Dimension	CSI-2 Connector	Supported SOC
C779	HDMI to CSI-2	1080p50fps	NO	Toshiba TC358743XBG	35 x 50 mm	15-PIN FPC (pitch 1.0 mm)	Pi 5B / 4B / 3B+ / 3B / 3A+ / Zero / Zero W/ Zero 2W
C790	HDMI to CSI-2	1080p60fps	Yes	Toshiba TC358743XBG	30 x 45 mm	15-PIN FPC (pitch 1.0 mm) on the front of C790; 22-PIN FPC (pitch 0.5 mm) on the rear of C790	Pi 5B / 4B / 3B+ / 3B / 3A+ / Zero / Zero W/ Zero 2W / CM3 / CM4
X630	HDMI to CSI-2	1080p50fps	Yes, but I2S wiring or the X1300-A2 accessory board is necessary	Toshiba TC358743XBG	30 x 42.4 mm	15-PIN FPC (pitch 1.0 mm)	4B / 3B+ / 3B / 3A+ / Zero W / Zero 2W
X1300	HDMI RX to MIPI CSI-2-TX	1080p60fps	Yes, but I2S wiring or the X1300-A2 accessory board is necessary	Toshiba TC358743XBG	30 x 37.5 mm	22-PIN FPC (pitch 0.5 mm)	Pi 5B / CM4 IO
X1301	HDMI RX to MIPI CSI-2-TX HDMI loop output	1080p60fps	Yes	Toshiba TC358743XBG	57 x 85.5 mm	22-PIN FPC (pitch 0.5 mm)	Pi 5B / 4B / 3B / 3B+ / 3A+ / CM4 IO
X1300-A2	I2S audio accessory board for X630 / X1300	1080p60fps	This is a I2S audio accessory board	-	57 x 65 mm	-	work with X1300 HDMI to CSI-2 for Raspberry Pi 5B, CM4 IO board work with X630 HDMI to CSI-2 for Raspberry Pi 4B, 3B+ and 3B

Hardware Parameters

Model: C790
Compatible with Raspberry Pi 5/4B/3B+/3B/Zero/Zero W/Zero 2W/CM4/CM3
HDMI input: supports up to 1080P60Hz on Raspberry Pi (Only when use with CM4 / Pi 5)
HDMI to CSI-2 bridge chip:Toshiba TC358743XBG
4 CSI-2 channels & clock (Pi 4 and Pi Zero only support 2 lan, max 1080P@50fps, and CM4 / Pi 5 can support 4 lan, max 1080P@60fps)
The CSI-2 interface, with 15 pin FPC seat, spacing 1.0 mm, is located on the front of the C790 module.
The CSI-2 interface, with 22 pin FPC seat, spacing 0.5 mm, is located on the back of the C790 module.
Size: 30 x 45 mm
Power supply:3.3V
Weight: 10g

Packing List

1 x C790 HDMI to CSI-2 Module
1 x 15cm Length FPC 15pin 1.0mm cable (for Pi 4B / 3B / 3A)
1 x 15cm Length FPC 22pin 0.5mm cable (for Pi 5B / Pi Zero / Zero W / Zero 2W / CM4 / CM3)
1 x I2S cable (15cm length)

User Manual

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.
In platforms such as Zero, Zero 2, Pi 3B, Pi 4B, etc., there is a reference for testing HDMI to CSI module demo： C779-Software or Raspberry pi official forum post
Pi 5B platforms HDMI to CSI module test demo reference： CSI Manual on Pi 5
Refer to: https://wiki.blicube.com/blikvm/en/hdmi-csi-i2s/