Axia Element - Page 37

3: Conguring GPIO • 27
©2008 Axia Audio — Rev. 3.0
GPIO Codec Logic
Name Pin Type Notes
INPUTS
ON Command 11 Active Low Input Turns channel ON
OFF Command 12 Active Low Input Turns channel OFF
TALK (to CR) Command 13 Active Low Input Mutes channel outputs and
routes source audio to PVW
speakers
MUTE Command 14 Active Low Input Mutes channel outputs
TALK (to SOURCE) Command 15 Active Low Input Allows an external button
to activate channel TALK TO
SOURCE function.
OUTPUTS
ON Lamp 1 Open Collector to Logic Com-
mon Return
Illuminates when channel is
ON unless TALK or MUTE are
active
OFF Lamp 2 Open Collector to Logic Com-
mon Return
Illuminates when channel is
OFF.
TALK (to CR) Lamp 3 Open Collector to Logic Com-
mon Return
Illuminates when TALK is
active
MUTE Lamp 4 Open Collector to Logic Com-
mon Return
Illuminates when MUTE is
active
TALK (to SOURCE) Lamp 5 Open Collector to Logic Com-
mon Return
Illuminates when the channel
TALK TO SOURCE function is
active.
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 com-
mon
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
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GPIO v.”Z” 12/2007