May 2024
Intermediate to advanced
889 pages
30h 8m
English
book
The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
by Lyla B. Das
Content preview from The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
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PERIPHERAL INTERFACING–III 11-9
11.2.10 | Handshaking in the RS232C Protocol
A number of signals seem to be involved in the RS232C protocol, some of which are
control signals. They are used for handshaking and let us see the sequence in which these
signals occur. Assume that a DTE equipment (for example, a COM port of a PC) and a
DCE equipment (serial port of a modem) are to perform data transfer. The handshaking
signals involved in this data transfer are as follows. Refer to Fig. 11.6 to understand the
direction of the signals.
DTR (Data Terminal Ready) When the DTE terminal is turned on, after its self test,
it sends out the DTR indicating ...
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