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# ZED X One Core Interfaces

The ZED X One Core exposes all its signals on a single **30-pin Micro I-PEX connector** located on the back of the module. This page describes that connector, its voltage levels, its pinout, and the I²C address map of the devices on the board.

![ZED X One Core back side](/_fern-img/a90d161b47c0eee13933f75d503cd1283926fc681a72bf40681b6659859db072.webp)

> **Warning**
>
> The information on this page is provided for **mechanical and electrical integration** purposes. The ZED X One Core is designed for exclusive use with the **ZED Link MIPI capture card**; connecting it to a third-party host is not supported. If you need to interface the camera with your own carrier board, please contact [support@stereolabs.com](mailto:support@stereolabs.com).

## Connector

| Feature           | Value                         |
| :---------------- | :---------------------------- |
| Part number       | I-PEX 20525-030E-02           |
| Mating connector  | FAW-1233-XX                   |
| Connector profile | 30 pins, 0.4 mm pitch         |
| Cable             | MIPI Micro I-PEX, up to 50 cm |

## Signal voltage levels

| Pins          | Group                                                               | Level                                |
| :------------ | :------------------------------------------------------------------ | :----------------------------------- |
| 1 - 4, 6 - 11 | MIPI CSI-2 data lanes (D0-D3) and clock                             | MIPI D-PHY signaling (1.2 V nominal) |
| 12 - 21       | Control, sync and interrupts (FSIN, I²C, S_RST, FLASH_EN, INT1/2/4) | 1.8 V CMOS                           |
| 28 - 30       | VDD_3V3 supply                                                      | 3.3 V                                |
| 5, 22 - 27    | Ground / Not connected                                              | -                                    |

## Pin description

| Pin   | Name     | Level       | Dir.         | Function                                                                   |
| :---- | :------- | :---------- | :----------- | :------------------------------------------------------------------------- |
| 1     | MIPI_D3P | D-PHY 1.2 V | Out          | CSI-2 data lane 3 (+)                                                      |
| 2     | MIPI_D3N | D-PHY 1.2 V | Out          | CSI-2 data lane 3 (-)                                                      |
| 3     | MIPI_D1P | D-PHY 1.2 V | Out          | CSI-2 data lane 1 (+)                                                      |
| 4     | MIPI_D1N | D-PHY 1.2 V | Out          | CSI-2 data lane 1 (-)                                                      |
| 5     | GND      | -           | -            | Ground reference                                                           |
| 6     | MIPI_CP  | D-PHY 1.2 V | Out          | CSI-2 clock lane (+)                                                       |
| 7     | MIPI_CN  | D-PHY 1.2 V | Out          | CSI-2 clock lane (-)                                                       |
| 8     | MIPI_D0P | D-PHY 1.2 V | Out          | CSI-2 data lane 0 (+)                                                      |
| 9     | MIPI_D0N | D-PHY 1.2 V | Out          | CSI-2 data lane 0 (-)                                                      |
| 10    | MIPI_D2P | D-PHY 1.2 V | Out          | CSI-2 data lane 2 (+)                                                      |
| 11    | MIPI_D2N | D-PHY 1.2 V | Out          | CSI-2 data lane 2 (-)                                                      |
| 12    | FSIN     | 1.8 V       | In           | Frame-sync / external trigger input, used for multi-camera synchronization |
| 13    | S_SCL    | 1.8 V       | In (OD)      | I²C clock, camera control bus, the host is the master                      |
| 14    | S_SDA    | 1.8 V       | Bi-Dir. (OD) | I²C data                                                                   |
| 15    | S_RST    | 1.8 V       | In           | Sensor reset                                                               |
| 16    | NC       | -           | -            | Not connected, do not drive                                                |
| 17    | FLASH_EN | 1.8 V       | Out          | Control signal to drive external light sources                             |
| 18    | NC       | -           | -            | Not connected, do not drive                                                |
| 19    | INT1     | 1.8 V       | Out          | IMU interrupt, BMI088 accelerometer INT1                                   |
| 20    | INT2     | 1.8 V       | Out          | IMU interrupt, BMI088 accelerometer INT2 (internally connected to INT4)    |
| 21    | INT4     | 1.8 V       | Out          | IMU interrupt, BMI088 gyroscope INT4 (internally connected to INT2)        |
| 22-27 | NC       | -           | -            | Not connected, do not drive                                                |
| 28-30 | VDD_3V3  | 3.3 V       | Power In     | 3.3 V supply input, three pins in parallel for current capacity            |

> **Note**
>
> Pins **28 to 30** must all be connected: they carry the 3.3 V supply in parallel to provide the required current capacity. The module draws **0.8 W (240 mA @ 3.3 VDC)**.

## Multi-camera synchronization

The `FSIN` input (pin 12) is the **frame-sync / external trigger** signal. When several ZED X One Core cameras are driven from the same trigger source, their exposures are aligned at frame level with a precision of **15 µs**, which is what makes multi-camera surround vision and stereo pairs usable for perception.

## I²C address map

| Address (7-bit) | Device                     |
| :-------------- | :------------------------- |
| 0x10            | AR0234 image sensor        |
| 0x19            | BMI088 IMU - accelerometer |
| 0x69            | BMI088 IMU - gyroscope     |
| 0x54            | EEPROM                     |
| 0x56            | EEPROM                     |
| 0x57            | EEPROM                     |

Notes on the addresses:

* **AR0234 image sensor** - the address can be reassigned by the driver to another value, through the internal registers of the sensor.
* **BMI088 IMU** - the two addresses are those of the accelerometer and of the gyroscope, which appear as two separate I²C devices. The driver can remap them through the device tree.
* **EEPROM** - usually read only once, at driver probe time, by opening each link one by one.