Product Info

Dragon-C Manual
All rights reserved Suzhou Pairlink Network Technology Ltd.
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4.Hardware design and use manual
4.1.Pin assignment and Pin description
ab
Dragon-C Pin definition can refer to Figure 2.
Table 1:Module Pin Description
Pin
Number
Pin Name
I/O
POR
State
Alternate Function Description
10
VBAT
ADI
/
Power Supply
1,2,3,9,17
,18,26
GND
GND
/
Connect to Ground
11
RESET
DI
INPUT. Reset signal (active Low). Floating if not
used
7
RECOVERY
I
SPI2 Master In Slave Out. For Test.
3
UART_RTS
I,PU
RTS for HCI UART interface. NC if unused.
4
UART_CTS
I,PU
CTS for HCI UART interface: NC if unused.
5
UART_RXD
I
Serial data input for the HCI UART interface.
6
UART_TXD
O,PU
Serial data input for the HCI UART interface.
8
P15/ADC_IN
DIO
Floating
GPIO:P15/ADC_IN
13
P30
DIO
Floating
GPIO:P30
14
P25
DIO
Floating
GPIO:P25/P32
15
P4/PUART_RX
DIO
Floating
GPIO:P4/P24
PUART_TX
16
P36
DIO
Floating
GPIO:P36/P38
19
P31/PUART_TX
DIO
Floating
GPIO:P31
PUART_RX
20
P34/I2S_WS
DIO
Floating
GPIO:P34
I2S_WS /PCM_SYNC
21
P12
DIO
Floating
GPIO:P12
I2S_DI/PCM_IN/I2C_SDA
22
P29/I2S_DATA
DIO
Floating
GPIO:P29
I2S_DO/PCM_OUT/I2C_SCL/PWM3
23
P28/I2S_SCLK
DIO
Floating
GPIO:P28
I2S_SCLK/PCM_CLK/PWM2
24
P26
DIO
Floating
GPIO:P26/P11
PWM0