BeagleBone RS232 Cape
System Reference Manual
Revision A
Page 16 of 22
4.3
UART Selection
The BeagleBone RS232 Cape provides an option for users to choose among four UART
ports from AM335x (UART1, 2, 4, and 5). The TXD and RXD signals are connected to
the corresponding signal of each UART via jumper headers. The default selection is
UART2. If one wishes to use a UART port, ensure the jumper for that port is installed.
4.4
Power Indicator
The BeagleBone RS232 Cape features an LED (D3) to indicate that power is applied to
the cape. This LED is green when lit.
4.5
Mechanical Specifications
Size:
4.00” x 2.50”
Layers:
4
PCB thickness:
.062”
RoHS Compliant:
Yes
4.6
Electrical Specifications
Table 3 is the electrical specification of the external interfaces to the BeagleBone RS232
panel.
Table 3.
BeagleBone RS232 Electrical Specifications
Specification
Min
Typ
Max
Unit
Power
Input Voltage DC
3.3
V
Environmental
Temperature range
0
+85
C
