May 2014
Intermediate to advanced
320 pages
13h 41m
English
Content preview from Servicing Personal Computers, 3rd Edition
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Microcomputer systems 57
The RS-232C system may thus be configured for a variety of operating modes including
transmit only (primary channel), receive only (primary channel), half-duplex, full-duplex, and
various primary and secondary channel transmit/receive combinations.
Protective ground
Transmit data, TXD
Receive data, RXD
Request to send, RTS
Clear to send, CTS
Data set ready, DSR
Signal ground
Carrier detect
Reserved (data set testing)
Reserved (data set testing)
Unassigned
Secondary carrier detect
Secondary clear to send
Figure 1.63. RS-232C pin connections
From this, it should be clear that the RS-232C is versatile and highly adaptable ...