Skip to content

GX8302B Development Board*

This development board is a general-purpose development platform for the GX8302B, suitable for developers to conduct hardware design and software development for Bluetooth keyboard and mouse, smart home appliances, IoT devices with displays, and wireless audio devices. The documentation provides download links for the hardware specifications and hardware design resources of the development board.

1. GX8302B Hardware Development Board Physical Image*

  • GX8302B Hardware Development Board Physical Image - Front

GX8302B Development Board Physical Image

GX8302B Development Board Physical Image
    1. GX8302B: Multi-functional AIoT processor
    1. Nor flash: GD25LQ32, or other 1.8V models
    1. Crystal oscillator: 32MHz, 10pF, ±10ppm
    1. Power inductor, used with the chip's DCDC circuit
    1. Button: BOOT button
    1. Button: RESET button
    1. Button: ON/OFF function button
    1. LCD screen: FLS-TC132H621, with backlight and touch function
    1. Lithium battery power management circuit
    1. Single-cell 3.7V lithium battery interface
    1. Chip VBAT5 power input selection: USB or lithium battery, select one
    1. USB-TypeC connector, supports USB Slave and power supply
    1. USB-DP/DM interface, needs to be shorted when using USB function
    1. Toggle switch, VBAT5 power ON-OFF
    1. Power indicator / indicator power supply interface
    1. JTAG interface, two-wire JTAG
    1. TF card socket
    1. TF card function interface, needs to be shorted when using TF card function
    1. Peripheral I2C Sensor interface, supports multiple I2C peripherals
    1. Peripheral I2C Sensor power supply port, also provides I2C external pull-up function
    1. Headphone amplifier DAC, ES8156, I2S input
    1. 3.5mm standard headphone jack
    1. I2S/I2C/power interface for headphone amplifier DAC, needs to be shorted when using headphone amplifier DAC function
  • 24-29: Function button group, 1.8V voltage divider, implemented via sarADC sampling, simultaneous pressing not supported
    1. Function button group sarADC interface, needs to be shorted when in use
    1. Analog power amplifier, model CS8138S
    1. Speaker interface
    1. Amplifier sarADC feedback/power/MUTE interface
    1. Reserved LDO, typically 3.0V, used as a supplement when VBAT3 external power is insufficient
    1. VDDIO interface, when shorted, VBAT3 supplies power to VDDIO, VDDIO supports other voltage levels
    1. Peripheral 3.0V power selection, can choose chip VBAT3 or onboard LDO
    1. Analog PWM audio output interface, needs to be shorted when in use
    1. RF test interface
    1. Onboard PCB antenna
    1. Electret condenser microphone (ECM)
    1. Electret condenser microphone power and enable interface, MIC_EN, VBAT3 power supply, needs to be shorted when in use
    1. Analog silicon microphone
    1. Analog silicon microphone power interface, MICBIAS power supply
  • 44-45. Digital microphones *2
    1. Digital microphone CLK/DAT/power interface, needs to be shorted when in use
    1. LED indicator interface, needs to be shorted when using LED
    1. Onboard LED indicator
    1. Onboard infrared emitting diode, λp=940nm, diameter 5mm
    1. Infrared emission IR interface, needs to be shorted when using infrared function
    1. Debug serial port, defaults to UART0, reserved flow control pin headers
  • 51-1. Serial board power interface, when shorted, the serial board's 3V can supply power to the development board
    1. Reserved IO interface: P1_x supports sarADC input, P4_x are general-purpose GPIO, P4_4 supports input only
    1. Reserved 3.0V and GND interfaces
    1. LCD screen power interface, needs to be shorted when in use
    1. Reserved IO interface: P3_2-P3_7 are not allowed for use
    1. Reserved 3.0V and GND interfaces

2. GX8302B Development Board Hardware Design Resources*