# RB5 mezzanine boards
Source: [https://docs.qualcomm.com/doc/80-88500-5/topic/rb5_mezzanine_boards.html](https://docs.qualcomm.com/doc/80-88500-5/topic/rb5_mezzanine_boards.html)
The RB5 development kit supports vision and 5G mezzanine boards.
## Vision mezzanine
The vision mezzanine is intended to support interfacing cameras to the RB5 platform. This mezzanine also adds gigabit multimedia serial links (GMSL) as well as 4 DMICs.
Figure : Vision mezzanine
The following key components are supported on the vision mezzanine:
**Camera**
- 2x GMSL2 camera inputs (using MAX9296A), CSI4 and CSI5
- Five CAM/CSI camera ports with identical pinouts: CSI0 is split into two cameras (CAM0A and CAM0B)
- CAM3 connector includes an option for a higher supply voltage of 5 V and accommodates the Panasonic TOF camera
- CAM0B has a parallel/duplicated connector
- Main camera (IMX577); part number: CMK-IMX577-B-V2.0, intended to be plugged into connector CAM2, CSI2
- Tracking camera (OV9282); part number: CMK-VR-OV9282-V1.0, intended to be plugged into connector CAM1, CSI1
**Sensors**
- TDK ICM-42688-P IMU (located on the back side of the board)
- AKM compass/magnetometer AK09919
- TDK pressure sensor (ICP-10111)
**Audio**
- Four digital PDM mics that interface directly with the RB5 platform
- Speaker connectors
Table : Vision mezzanine DIP switches
| DIP1 | Name | Details | Default |
| :---: | :---: | :---: | :---: |
| 1 | SENSOR\_SPI\_PASSTHRU | ON: SSC sensor SPI routed to IMU\_SPI\_SELECT switch
OFF: IMU sensor SPI pass through (SSC QUP2) | OFF |
| 2 | QUP\_9\_PASSTHRU | ON: QUP 9 routed to IMU\_SPI\_SELECT switch
OFF: pass through | OFF |
| 3 | QUP\_14\_PASSTHRU | ON: SPI to CAM2 connector
OFF: pass through | OFF |
| 4 | PRESS\_SENS\_DISCONNECT | ON: on board
OFF: disconnected | OFF |
| 5 | MAG\_SENSOR\_DISCONNECT | ON: on board
OFF: disconnected | OFF |
| 6 | UART0\_PASSTHRU | ON: on board
OFF: pass through | OFF |
| **DIP2** | **Name** | **Details** | **Default** |
| 1 | DIP\_CSI0A\_B\_SWITCH | ON: CSI0 all 4 lanes to CAM0A
OFF: CSI0 2 lanes to CAM0A, 1 lane to CAM0B | OFF |
| 2 | MIC\_DISCONNECT | ON: DMIC 2/3 connects to onboard mics
OFF: DMIC 2/3 pass through | OFF |
| 3 | IMU\_SPI\_SELECT | ON: connects IMU to QUP9 (AP) – only if DIP 1:2 is ON
OFF: connects IMU to QUP2 (SSC) – only if DIP 1:1 is ON | OFF |
| 4 | IMU\_INT\_1\_2\_SELECT\_LOGIC1 | ON: IMU INT1 to GYRO\_INT (GPIO 113), IMU INT2 to PMIC clock
OFF: IMU INT1 and 2 connected to IMU sensor switch | OFF |
| 5 | IMU\_INT\_1\_2\_SELECT\_LOGIC2 | ON: IMU INT1 to ACCEL\_INT (GPIO 112), IMU INT2 to GYRO\_INT (GPIO 113)
OFF: IMU INT 1 and 2 disconnected | OFF |
| 6 | PRESSURE\_COMPASS\_SELECT | ON: Pressure/Compass connected to AP I2C (QUP4)
OFF: Pressure/Compass connected to sensor core I2C (SSC QUP0) | OFF |
## 5G mezzanine
The 5G mezzanine provides support to interface a 5G M.2 module with the RB5 platform. Other WAN M.2 components can also be used; for example, 4G LTE modules.
Figure : 5G mezzanine board
Table : 5G mezzanine DIP switches
| DIP1 | Name | Details | Default |
| :---: | :---: | :---: | :---: |
| 1 | MODULE\_PWRKEY | ON: manually power on the 5G module
OFF: software controls the power-on Via GPIO | OFF |
| 2 | MODULE\_W\_DISABLED | ON: airplane mode ON
OFF: software controls airplane mode selection via GPIO | OFF |
| 3 | GPS\_DISABLE\_N | ON: GPS disabled
OFF: software controls GPS enable/disable via GPIO | OFF |
| 4 | DYN\_PWR\_CTRL | ON: dynamic power control enabled
OFF: dynamic power control disabled | OFF |
| 5 | MODULE3V3\_L-4V2\_HESEL | ON: module voltage set to 3.3 V
OFF: module voltage set to 4.2 V | OFF |
| 6 | N/A | N/A | OFF |
**Parent Topic:** [Hardware overview](https://docs.qualcomm.com/doc/80-88500-5/topic/platform_hardware_overview.html)
Last Published: Nov 25, 2025
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