BeagleBone RS232 Cape
System Reference Manual
Revision A
Page 17 of 22
5.0
System Architecture and Design
This section provides a high level description of the design of the BeagleBone RS232
Cape and its overall architecture.
5.1
System Block Diagram
Figure 3 is the high level block diagram of the BeagleBone RS232 Cape.
Figure 3. BeagleBone RS232 Cape High Level Block Diagram
5.2
RS232
The BeagleBone RS232 Cape uses a D-Sub 9 female serial connector to provide RS232
connection. The TX, RX, and GND signals of RS232 interface are connected to pin 2, 3,
and 5 of D-Sub connector J1. A compatible serial cable is required to communicate via
RS232 interface. RS232 data are transmitted or received by SN65C322EPW, which
translate data between UART and RS232.
