Axia Element Installation & User Manual page 37

GPIO Codec Logic
Name
INPUTS
ON Command
OFF Command
TALK (to CR) Command
MUTE Command
TALK (to SOURCE) Command
OUTPUTS
ON Lamp
OFF Lamp
TALK (to CR) Lamp
MUTE Lamp
TALK (to SOURCE) Lamp
POWER & COMMON
Source Common
Logic Common
Logic + 5 Volt supply
Source Supply
NOT CONNECTED
Pin
11
12
13
14
15
1
2
3
4
5
7
8
9
10
6
©2008 Axia Audio — Rev. 3.0
Type
Active Low Input
Active Low Input
Active Low Input
Active Low Input
Active Low Input
Open Collector to Logic Com-
mon Return
Open Collector to Logic Com-
mon Return
Open Collector to Logic Com-
mon Return
Open Collector to Logic Com-
mon Return
Open Collector to Logic Com-
mon Return
Logic Common
Internal 5 Volt return
Logic Supply, Individually
Fused
Common for all 5 inputs
Notes
Turns channel ON
Turns channel OFF
Mutes channel outputs and
routes source audio to PVW
speakers
Mutes channel outputs
Allows an external button
to activate channel TALK TO
SOURCE function.
Illuminates when channel is
ON unless TALK or MUTE are
active
Illuminates when channel is
OFF.
Illuminates when TALK is
active
Illuminates when MUTE is
active
Illuminates when the channel
TALK TO SOURCE function is
active.
Connect to ground of source
device or to Pin 8
Can be connected to Pin 7 if
source is not providing com-
mon
Can be connected to Pin 10
if source is not providing
voltage; active only when
source has been assigned to
channel.
Connect to power supply of
source device or to Pin 9
GPIO v."Z" 12/2007