Cobalt Digital Inc 9903-UDX-ADDA Product Manual page 32

2
GPI Port Connections
(Phoenix Connector)
Rear module
PCB connector
GPI 2
IN 2
COMM and GPIO Connections (RJ-45 Connector)
Pin Function
1 GPI IN 1
2 GPI IN 2
3 GPO RTN
4 GPO OUT 1
5 GPO OUT 2
6 UART_TX
7 UART_RX
8 COMM GND
GPI GND connections should be connected to pin 8 –
COMM GND, which is chassis GND.
Rear module
PCB connector
Note: Unbalanced connections can be
connected across the + and G
terminals. Note that this connection
will experience a 6 dB voltage gain
loss. Adjust gain for these connections
accordingly.
2-8
2 1 G
Removable Phoenix plug
view oriented with top
(screw terminals) up
GPI 1
IN 1
G
G
Pin 1
Note: View is "looking into"
connector from
unterminated
(user-facing) side.
+ - G
+
Figure 2-2 COMM, GPIO, and Analog Audio Connector Pinouts
9903-UDX-ADDA PRODUCT MANUAL
Setting Up 9903-UDX-ADDA Network Remote Control
Rear module
PCB connector
GPO 1
OUT 1
GPIO uses equivalent opto-isolated circuits shown below.
GPO Specifications:
Max I: 120 mA
Max V: 30 V
Max P: 120 mW
Pullup R >500Ω resistor is recommended when using 5V control.
Pin 8
GPI Specifications:
GPI LO @ Vin < 1.5 V
GPI HI @ Vin > 2.3 V
Max Vin: 9 V
GPO from
card control
card control
Balanced Analog Audio Port Connections
–
G
GPO Port Connections
(Phoenix Connector)
1 2 G
OUT 2
G
G
V+
+3.3V
GPI to
10 kΩ
Removable Phoenix plug view oriented
with top (screw terminals) up
9903UDXADDA-OM (V1.5)
GPO 2
GPO
GPO COM
GPI