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 11-7
Table 11.1 | Pin Functions of the DB-25 Connector
Pin No. Description Pin No.
1 Protective ground 13 Secondary clear to send
2 Transmitted data (T × D) 14 Secondary transmitted data
3 Received data (R × D) 15 Transmit signal element timing
4 Request to send (RTS) 16 Secondary received data
5 Clear to send (CTS) 17 Receive signal element timing
6 Data set ready (DSR) 18 Unassigned
7 Signal ground 19 Secondary request to send
8 Data carrier detect (DCD) 20 Data terminal ready (DTR)
9 Data test pin 21 Signal quality detector
10 Data test pin 22 Ring indicator
11 Unassigned 23 Data signal rate select
12 Secondary data ...
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