Functional Details
Sound
Rev. 1
SmartHub Underdash OBC Hardware Guide
15 / 28
Figure 7:
Customized Logo
Sound
Speakers
The SmartHub Underdash OBC provides external speaker connection through the main cable harness.
Microphone
The SmartHub Underdash OBC provides external speaker connection through the main cable harness.
Communication Interfaces
Serial Communication
The SmartHub Underdash OBC supports 4 serial communication ports for external devices and
peripheral connections and a debug port connected to the Co-Processor. These ports support various
hardware and software flow control functions.
Serial Port 1 (COM1)
The SmartHub Underdash OBC supports an EIA-RS232 level serial communication port. The port
supports a baud rate of 300 to 115,200bps, and provides one pair of communication-control handshake
signals (CTS / RTS).
Serial Ports 2-4 (COM2-4)
The SmartHub Underdash OBC supports EIA-RS232 level serial communication ports 2-4. The ports
support a baud rate of 300 to 115,200bps, and provide the TX and RX signals only.
