User's Manual

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3
2.3 Distribution Pin Description
NO. Networklabel Distribution Remark
1 GND GND
2 EXRESET Theexternalresetpin
3 SOP2 Sense‐On‐Power2
4 SOP0 Sense‐On‐Power0
5 VDD 3.3V
6 VDD 3.3V
7 GND GND
8 GND GND
9 GPIO30 General‐PurposeI/O
UART0TXData
I2SAudioPortClockO
I2SAudioPortFrameSync
TimerCapturePort
GeneralSPIMISO
10 GPIO0 General‐PurposeI/O
UART0 Clear ToSend 
Input
I2S Audio PortData 1
(RX/TX)