SN32F100 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 171
Version 1.9
JP46: Mini USB connector for power supply.
S1: USB power on/off.
S2: MCU power source is VDD or Writer.
JP53: VDD power source is 3.3V from board or external power. Do not short if External power source is used.
U4: SN32F109F real chip.
D9: Power LED.
RESET button: External reset trigger source.
WAKEUP button: Trigger source to wake up from deep power-down mode.
Y1: External high-
speed X’tal
Y2: External low-
speed 32.768KHz X’tal
Y3: External high-speed
X’tal for Audio.
JP18: SN-LINK connector
JP15: Writer connector
JP20: Short to force MCU stay in Boot loader.
JP21: I2S connector.
JP3/JP4: I2C0/I2C1 connector.
JP7/JP12: SPI0/SPI1 connector.
JP8/JP9: UART0/UART1 connector.
R1: SCL0 pull-up resistor.
R3: SDA0 pull-up resistor.
R2: SCL1 pull-up resistor.
R4: SDA1 pull-up resistor.
R5: UTXD0 or UTXD1 pull-up resistor.
R6: URXD0 or URXD1 pull-up resistor.
JP47: Codec ADC power connector.
JP48: Codec DAC power connector.
JP49: Codec Driver power connector.
JP34: Headset connector.
JP29: Microphone connector.
JP42: MIC_N connector.
JP43: MIC_P connector.
R30: MIC_BIAS from external bias adjust.