BBG1002UDX-OM (V1.5)
BBG-1002-UDX PRODUCT MANUAL
2-5
Installation
GPIO, Serial (COMM), and Analog Audio Connections
GPIO, Serial (COMM), and Analog Audio Connections
Figure 2-4 shows connections to the device multi-pin terminal block
connectors. These connectors are used for serial comm, GPIO, and balanced
analog audio connections.
Note:
It is preferable to wire connections to plugs oriented as shown in
Figure 2-4
rather than assessing orientation on rear module connectors. Note
that the orientation of rear module 3-wire audio connectors is not necessarily
consistent within a rear module, or between different rear modules. If wiring is
first connected to plug oriented as shown here, the electrical orientation will
be correct regardless of rear module connector orientation.
Figure 2-4 COMM, GPIO, and Analog Audio Connector Pinouts
+
–
G
Removable Phoenix plug view oriented
with top (screw terminals) up
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.
Rear module
PCB connector
+ - G
Balanced Analog Audio Port Connections
GPI GND connections should be connected to pin 8 –
COMM GND, which is chassis GND.
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
COMM and GPIO Connections (RJ-45 Connector)
Pin 8
Pin 1
Note: View is “looking into”
connector from
unterminated
(user-facing) side.
GPIO uses equivalent opto-isolated circuits shown below.
GPO
GPO COM
GPI
10 k
Ω
+3.3V
GPO from
card control
GPI to
card control
V+
GPO Specifications:
Max I: 120 mA
Max V: 30 V
Max P: 120 mW
Pullup R >500
Ω
resistor is recommended when using 5V control.
GPI Specifications:
GPI LO @ Vin < 1.5 V
GPI HI @ Vin > 2.3 V
Max Vin: 9 V
