User Manual

Chapter 2 Hardware Information 16
Rockchip RK3399 Platform
RICO-3399
2.4.19 Integrated USB, I2C x 2, 5V (CN19)
Pin
Definition
Pin
Definition
1
I2C4_CLK
6
USB1_D-
2
I2C4_DATA
7
I2C3_CLK
3
GND
8
I2C3_DATA
4
+5V
9
NFC_DFU
5
USB1_D+
2.4.21 RS-232 Port (CN21)
Pin
Definition
Pin
Definition
1
DCD
6
DSR
2
RX
7
RTS
3
TX
8
CTS
4
DTR
9
Vout (refer to JP3)
5
GND
2.4.22 GPIO Port (CN22)
Pin
Definition
Pin
Definition
1
GPO0
6
GPI2
2
GPI0
7
GPO3
3
GPO1
8
GPI3
4
GPI1
9
+3.3V
5
GPO2
10
GND