Inside the Qualcomm Robotics RB5 Development Kit
The core kit includes a QRB5165 SOM mounted on a credit card sized mainboard that houses many peripheral interfaces and a robust expansion interface that supports the addition of multiple stackable mezzanine cards for added functionality.
| Label | Key main board interfaces | Name | Details |
|---|---|---|---|
| 1 | Low speed connector | LS1 | Low speed interfaces: SPI, I2C, UART, I2S/PCM, GPIO’s power same as 96 board specification |
| 2 | Low speed connector | LS2 | Low speed interfaces: SPI, I2C, UART, I2S/PCM, DMIC, speakers, CAN, PWMs, ADCs, GPIO’s power additional to 96 board specification |
| 3 | Low speed connector | LS3 | Low speed interface: SPI, I2C, UART, sensor core, GPIO’s power, reference clocks, additional to 96 board specification |
| 4 | High-speed connector | HS2 | PCIe, CSI, SPI/UART/I2C, USB SS, GPIOs additional to 96 board specification |
| 5 | High-speed connector | HS3 | PCIe, CSI, DSI, reference clocks, additional to 96 board specification |
| 6 | High-speed connector | HS1 | SDIO, DSI, CSI, HS USB, I2C, same as 96 board specification |
| 7 | HDMI | HDMI type A | Up to 4K at 60 Hz with audio |
| 8 | USB connector | USB type-C | USB Type-C with display port (direct connect to processor) |
| 9 | USB connector | USB type A (host mode) | USB 3.1 Gen 2 through USB hub |
| 10 | USB connector | USB type A (host mode) | USB 3.1 Gen 2 through USB hub |
| 11 | Ethernet | RJ45 Ethernet connector | Ethernet through USB 3.0 (1 GB) |
| 12 | Power | DC power input | + 12 V from wall supply |
| 13 | Antenna | Antenna1 | 2.4/5 GHz printed antenna |
| 14 | Antenna | Antenna0 | 2.4/5 GHz printed antenna |
| 15 | microSD card | microSD card | microSD card tray |
| 16 | Debug UART | Micro USB connector | Connector with FTDI USB to UART converter |
| Label | Key main board interfaces | Name | Details |
|---|---|---|---|
| 1 | LEDs | Wi-Fi and Bluetooth LEDs | Yellow and blue, same as 96 board spec |
| 2 | LEDs | User LEDs | Green, same as 96 board spec |
| Push-button switch | Forced USB boot | Momentary switch | |
| 4 | Push-button switch | Power on | Momentary switch |
| 5 | Push-button switch | Vol- | Momentary switch |
| 6 | Push-button switch | Vol+ | Momentary switch |
| 7 | DIP switches | Boot config control | 4 switches |
| 8 | DIP switches | User controllable options | 6 switches |
DIP switch details:
| DIP_SW_0 | Name | Details | Default |
|---|---|---|---|
| 1 | Mic switch | ON – On board DMIC OFF – Off board DMIC | OFF |
| 2 | Debug UART | ON – Debug UART OFF – Off board UART | ON |
| 3 | CBL_PWR_N | ON – Auto power-up OFF – Push power button to power up | OFF |
| 4 | HDMI switch | ON – DSIO to HS1 connector OFF – DSIO to HDMI bridge | ON |
| 5 | Sensor IMU toggle | ON – SPI to LS3 connector OFF – SPI to onboard IMU | ON |
| 6 | IMU external clock | ON – External clock to IMU OFF – Internal clock to IMU | OFF |
| DIP_SW_1 | Name | Details | Default |
| 1 | BOOT_CONFIG_1 [GPIO_27] | Selects external boot devices | OFF |
| 2 | BOOT_CONFIG_2 [GPIO_47] | OFF | |
| 3 | BOOT_CONFIG_3 [GPIO_76] | OFF | |
| 4 | BOOT_CONFIG_0 [GPIO_128] | ON – Disables WDOG OFF – Enables WDOG | OFF |
| GPIO | Boot device | |||
|---|---|---|---|---|
| FAST_BOOT GPIO bit (3:0) | 76 | 47 | 27 | |
| 0000 | 0 | 0 | 0 | Default: UFS0 → SDC2 → USB0 → EDL (USB0) |
| Other | Reserved | |||
RF Antennas
The development board has two dual band (2.4/5GHz WLAN/Bluetooth) antennas. Coaxial cable connections between the SOM and antennas are not required because the RF connections go through the SOM board-to-board connector.
