System Connectors
Domino Melody is equipped with a RJ-45 connector and an internal 10-pin header named System for I/O connection.
System Connector
RJ45 female connector
(bracket viewed from outside)
System connector pins assignment
Pin # |
Pin name |
Usage |
1 |
TR+ |
Differential trigger input |
2 |
TR- |
Differential trigger input |
3 |
Enhanced IO1 |
General-purpose enhanced I/O line 1 |
4 |
Enhanced IO2 |
General-purpose enhanced I/O line 2 |
5 |
+5V |
5V power supply |
6 |
GND |
Signal and power ground |
7 |
ST+ |
Opto-isolated strobe output |
8 |
ST- |
Opto-isolated strobe output |
System Internal Header
10-pin male receptacle, dual-row 2.54mm pitch, straight shrouded header
(board viewed from component side)
System internal header pins assignment
Pin # |
Pin name |
Usage |
1 |
TR+ |
Differential trigger input |
2 |
TR- |
Differential trigger input |
3 |
ST+ |
Opto-isolated strobe output |
4 |
ST- |
Opto-isolated strobe output |
5 |
– |
Not connected |
6 |
– |
Not connected |
7 |
Enhanced IO1 |
General-purpose enhanced I/O line 1 |
8 |
GND |
Signal and power ground |
9 |
Enhanced IO2 |
General-purpose enhanced I/O line 2 |
10 |
GND |
Signal and power ground |
See I/O Operation for the operation of I/O lines.