Solvline Eddy Series Ver 2.1a - Manual (Page 22)

Chapter 3. Hardware
Description
3-7
J3 Pin Description
Pin No Name Description
1-5 PID[4:0]
Product ID only used by the manufacturer.
Please do not work on these pins.
6, 25,
26
GND Ground
7~22 GPIO[1:16]
General Purpose In/Out signal
Development Kit’s LED adjustable
Pin State LED
Definition
H ON
L OFF
Debug Unit - DBGU
23 DRXD Debug Receive Data
24 DTXD Debug Transmit Data
Reset/Test
27 BMS
Boot Mode Select signal
BMS = 1, Boot on Embedded ROM
BMS = 0, Boot on External Memory
28 NRST External device Reset signal, active low signal
Universal Synchronous Asynchronous Receiver Transmitter USART0
29 DCD USART0 Data Carrier Detection
30 RXD USART0 Receive Data
31 TXD USART0 Transmit Data
32 DTR USART0 Data Terminal Ready
33 DSR USART0 Data Set Ready
34 RTS USART0 Request To Send
35 CTS USART0 Carrier To Send
36 RI USART0 Ring Indicator