User Manual

Chapter 2 Hardware Information 11
Rockchip RK3399 Platform
RICO-3399
2.4.4 Nano-SIM Slot (CN4)
Pin
Definition
Pin
Definition
C1
USIM_PWR
C5
GND
C2
USIM_RESET
C6
N.C
C3
USIM_CLK
C7
USIM_DATA
2.4.5 RS-232/422/485 Port (D-Sub) (CN5)
RS-232
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
RS-485
Pin
Definition
Pin
Definition
1
RS485_D-(B)
6
N.C
2
RS485_D+(A)
7
N.C
3
N.C
8
N.C
4
N.C
9
N.C
5
N.C