Axia xNode - GPIO Computer Playback Logic

A: GPIO Logic Table Samples • 47
© 2016 Axia Audio - Rev 2.0
GPIO Computer Playback Device Logic
Name Pin Type Notes
INPUTS
ON Command 11 Active Low Input Turns channel ON
OFF Command 12 Active Low Input Turns channel OFF & sends
100 msec STOP pulse
PREVIEW Command 13 Active Low Input Turns preview ON
Not Used 14 Active Low Input
READY Command 15 Active Low Input Illuminates OFF lamp to indi-
cate source’s readiness
OUTPUTS
NEXT Pulse 1 Open Collector to Logic Com-
mon Return
A 100 mS PULSE sent when
ON button is depressed, ex-
cept when initially turned ON.
OFF Lamp 2 Open Collector to Logic Com-
mon Return
Illuminates when channel is
OFF and READY is active
PREVIEW Lamp 3 Open Collector to Logic Com-
mon Return
Illuminates when PREVIEW
is ON
START Pulse 4 Open Collector to Logic Com-
mon Return
A 100 ms PULSE sent when
channel is rst turned ON.
STOP Pulse 5 Open Collector to Logic Com-
mon Return
A 100 ms PULSE sent when
channel is turned OFF.
POWER & COMMON
Source Common 7 Logic Common Connect to ground of source
device or to Pin 8
Logic Common 8 Internal 5 Volt return Can be connected to Pin 7
if source is not providing
common
Logic + 5 Volt supply 9 Logic Supply, Individually
Fused
Can be connected to Pin 10
if source is not providing
voltage; active only when
source has been assigned to
channel.
Source Supply 10 Common for all 5 inputs Connect to power supply of
source device or to Pin 9
NOT CONNECTED 6
8 7 6 5 4 3 2 1
15 14 13 12 11 10 9
ØV (GND)
SOURCE
OUTPUT
COMMON
RETURN
OUT
5
OUT
2
OUT
3
OUT
4
OUT
1N/C
IN
5
IN
4
IN
3
IN
2
IN
1
IN
COM
+
+5 V
POWER
SOURCE
GPIO v.”ZA” 4/2009