Reference
Terra User Manual
97
020-102838-10 Rev. 1 (05-2020)
Copyright
©
2020 Christie Digital Systems USA Inc. All rights reserved.
Analog audio is routed like HDMI video and HDMI audio using multicast addresses starting at address
224.1.1.1. TX devices are assigned an unused multicast address and send audio packets to this
address. When one or more RX units are joined to the analog audio feed coming from the TX, the
network switch starts sending all audio packets to the network ports that these devices are connected
to. The TX analog audio port can also be configured as an output port. When configured as an output
port it can be used as an analog audio breakout port for the audio coming in on the HDMI input
connector.
RGMII USB 2.0 interface
The second RGMII interface is used with Icron ExtremeUSB core to enable USB 2.0 extension
capabilities for remote USB devices such as keyboard, mouse, USB drive, web camera and others.
Infrared
Each Transceiver and Receiver has two IR ports: an input and an output which operate at
3.3V. The output connects to an output circuitry that amplifies the 3.3V output to 5V.
Similarly, the 3.3V input is connected to a clamping circuit to drop 12V input voltage down
to 3.3V.
Cabling
Connector
Wired IR In
IR Receiver
Type
3.5 mm Stereo Mini-jack
IR Receiver Head
IR Signal
B Ring
IR Signal
+5V Signal
A Tip
Power
Ground
C Sleeve
Sleeve
Stereo Mini Jack