Gpio, Serial (Comm), And Analog Audio Connections - Cobalt Digital Inc BBG-1022-2FS Product Manual

Installation

GPIO, Serial (COMM), and Analog Audio Connections

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.
BBG1022-2FS-OM (V1.3)
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.
Pin 1
Note: View is "looking into"
connector from
unterminated
(user-facing) side.
+ - G
+
Figure 2-4 COMM, GPIO, and Analog Audio Connector Pinouts
BBG-1022-2FS PRODUCT MANUAL
GPIO, Serial (COMM), and Analog Audio Connections
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
V+
+3.3V
GPI to
10 kΩ
Removable Phoenix plug view oriented
with top (screw terminals) up
GPO
GPO COM
GPI
2-5