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Added documenation for 15-pin and 22-pin Camera Connectors. #3155 #4105

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Added documenation for 15-pin and 22-pin Camera Connectors. #3155 #4105

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Added documentation for 15-pin and 22-pin Camera Connectors. #3155
philipaxer May 15, 2025
5d60e14
Added statment that the connector type can flip the camera pinning again
philipaxer May 16, 2025
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75 changes: 75 additions & 0 deletions documentation/asciidoc/accessories/camera/camera_hardware.adoc
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Expand Up @@ -269,3 +269,78 @@ Other available schematics;
* Camera Module v3 https://datasheets.raspberrypi.com/camera/camera-module-3-schematics.pdf[PDF]
* HQ Camera Module https://datasheets.raspberrypi.com/hq-camera/hq-camera-schematics.pdf[PDF]

==== Camera Connector Pinout (15-Pin)

This is the pinout of the 15-pin Camera Serial Interface (CSI) connector used on flagship Raspberry Pi models prior to the Raspberry Pi 5.
The connector type is an Amphenol SFW15R-2STE1LF or a compatible equivalent.

NOTE: Most official Camera Modules use the same 15-pin connector but feature a reversed pinout to support 15-pin Type A / Type 1 FFC cables.
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"Most"?? I don't think there's an official camera module (see https://www.raspberrypi.com/products/#cameras-and-displays ) that doesn't have a 15-pin connector?

As a result, Pin 1 on the Raspberry Pi connects to Pin 15 on the camera module, and vice versa.
When using third-party connectors or extension boards, be cautious — some expose the opposite side of the FFC cable, effectively reversing the pin order again.

Signal direction is specified from the perspective of the Raspberry Pi.
The I^2^C lines (SCL and SDA) are pulled up to 3.3V on the Raspberry Pi board.

The function and direction of the GPIO lines depend on the specific Camera Module in use. Typically, CAM_IO0 is used as an active-high power enable.

|===
| Pin No. | Name | Description | Direction / Type

| 1 | GND | - | Ground
| 2 | CAM_DN0 | D-PHY lane 0 (negative) | Input, D-PHY
| 3 | CAM_DP0 | D-PHY lane 0 (positive) | Input, D-PHY
| 4 | GND | - | Ground
| 5 | CAM_DN1 | D-PHY lane 1 (negative) | Input, D-PHY
| 6 | CAM_DP1 | D-PHY lane 1 (positive) | Input, D-PHY
| 7 | GND | - | Ground
| 8 | CAM_CN | D-PHY Clock (negative) | Input, D-PHY
| 9 | CAM_CP | D-PHY Clock (positive) | Input, D-PHY
|10 | GND | - | Ground
|11 | CAM_IO0 | GPIO (e.g. Power-Enable) | Bidirectional, 3.3V
|12 | CAM_IO1 | GPIO (e.g. Clock, LED) | Bidirectional, 3.3V
|13 | SCL | I^2^C Clock | Output, 3.3V
|14 | SDA | I^2^C Data | Bidirectional, 3.3V
|15 | 3V3 | 3.3V Supply | Output
|===

==== Camera Connector Pinout (22-Pin)

This is the pinout of the 22-pin Camera Serial Interface (CSI) connector used on the Raspberry Pi Zero series, the Compute Module IO boards, and flagship models since the Raspberry Pi 5.
The connector type is an Amphenol F32Q-1A7H1-11022 or a compatible equivalent.

NOTE: Many official Camera Modules use the same 22-pin connector but feature a reversed pinout to accommodate https://www.raspberrypi.com/products/camera-cable/[22-pin Type A / Type 1 FFC cables].
As a result, Pin 1 on the Raspberry Pi connects to Pin 22 on the camera module, and vice versa.
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Note that (AFAIK) all of our camera modules are 15-pin, and it's only the "special cable" (which I mentioned previously) that connects a 15-pin camera module to the 22-pin CSI connector on Pi 5 or Pi Zero.

When using third-party connectors or extension boards, be cautious - some connectors expose the opposite side of the FFC cable, effectively reversing the pin order again.

Direction is given from the perspective of the Raspberry Pi.
The I^2^C lines (SCL and SDA) are pulled up to 3.3V on the Raspberry Pi board.

The function and direction of the GPIO lines depend on the specific Camera Module in use. Typically, CAM_IO0 is used as an active-high power enable.


|===
| Pin No. | Name | Description | Direction / Type

| 1 | GND | - | Ground
| 2 | CAM_DN0 | D-PHY lane 0 (negative) | Input, D-PHY
| 3 | CAM_DP0 | D-PHY lane 0 (positive) | Input, D-PHY
| 4 | GND | - | Ground
| 5 | CAM_DN1 | D-PHY lane 1 (negative) | Input, D-PHY
| 6 | CAM_DP1 | D-PHY lane 1 (positive) | Input, D-PHY
| 7 | GND | - | Ground
| 8 | CAM_CN | D-PHY Clock (negative) | Input, D-PHY
| 9 | CAM_CP | D-PHY Clock (positive) | Input, D-PHY
|10 | GND | - | Ground
|11 | CAM_DN2 | D-PHY lane 2 (negative) | Input, D-PHY
|12 | CAM_DP2 | D-PHY lane 2 (positive) | Input, D-PHY
|13 | GND | - | Ground
|14 | CAM_DN3 | D-PHY lane 3 (negative) | Input, D-PHY
|15 | CAM_DP3 | D-PHY lane 3 (positive) | Input, D-PHY
|16 | GND | - | Ground
|17 | CAM_IO0 | GPIO (e.g. Power-Enable) | Bidirectional, 3.3V
|18 | CAM_IO1 | GPIO (e.g. Clock, LED) | Bidirectional, 3.3V
|19 | GND | - | Ground
|20 | SCL | I^2^C Clock | Output, 3.3V
|21 | SDA | I^2^C Data | Bidirectional, 3.3V
|22 | 3V3 | 3.3V Supply | Output
|===