User guide

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79
Pin Name Function In/Out
1 VCC 5V Power supply -
2 AUX1 Not used – no connection O
3 AUX2 Not used – no connection O
4 TCL Reserved for future version supporting
the LM74 temperature sensor.
O
5 TADR Reserved for future version supporting
the LM74 temperature sensor.
O
6 AUX3 Not used – no connection O
7 TDA Reserved for future version supporting
the LM74 temperature sensor. Pull to
5V via 3K3 resistor.
I/O
8 SCL Reserved for future version supporting
the 24LC256 flash drive.
O
9 SDA Reserved for future version supporting
the 24LC256 flash drive. Pull to 5V via
3K3 resistor.
I/O
10 TXENAB Active high signal enables 75176
DMX512 transmit.
O
11 VCC 5V Power supply -
12 GND Power supply -
13 CLKIN 16 MHz Crystal I
14 CLKOUT 16 MHz Crystal O
15 RED PWM Output O
16 GREEN PWM Output O
17 BLUE PWM Output O
18 AMBER PWM Output O
19 MODE1 I
20 MODE2 I
21 MODE4 I
22 MODE8 I
23 POW Active low system good LED drive. O
24 RXENAB Active low signal enables 75176
DMX512 receive.
O
25 DMXTX DMX512 transmit O
26 DMXRX DMX512 receive I
27 HUN1 I
28 HUN2 I
29 HUN4 I
30 HUN8 I
31 GND Power supply -
32 VCC 5V Power supply -
33 TEN1 I
34 TEN2 I
35 TEN4 I
36 TEN8 I
37 UNIT1 I
38 UNIT2 I
39 UNIT4 I
Pin
Functions
40 UNIT8 I