B. Making Your Own Cable
B-2
UniSite-xpi User Manual
Making Your Own Cable
The programmer receives commands and sends responses through an
RS-232C port using a 25-pin D connector in two possible configurations:
either DTE or DCE. The connections are shown in Figure B-B-1.
Figure B-1
Pin Designations for RS-232C Serial Port Connection
8
2
3
20
7
6
4
5
9-19
21-25
1
1
2
3
4
5
6
7
8
9
DCD
DATA
DATA
DTR
SIGNAL GND
DSR
RTS (HELD HIGH)
CTS
DCD
TRANSMIT
RECEIVE
DTR
GND
DSR
RTS
CTS
RECEIVE
TRANSMIT
25 PIN
UNISITE (DCE)
9 PIN
TERMINAL (DTE)
NC
NC
NC
NC
1
2
3
4
5
6
7
8
9-19
20
21-25
1
2
3
4
5
6
7
8
20
PROTECTIVE GND
DATA
DATA
RTS (HELD HIGH)
CTS
DSR
SIGNAL GND
DCD (HELD HIGH)
DTR
NC
NC
GND
TRANSMIT
RECEIVE
RTS
CTS
DSR
GND
DCD
DTR
RECEIVE
TRANSMIT
25 PIN
UNISITE (DCE)
25 PIN
TERMINAL (DTE)
0362-4
The minimum hookup includes Pins 2, 3, and 7.
Pins 1 and 7 are tied together.
1
2
3
4
5
6
7
8
9-19
20
21-25
1
2
3
4
5
6
7
8
20
PROTECTIVE GND
DATA
DATA
RTS (HELD HIGH)
CTS
DSR
SIGNAL GND
DCD
DTR
NC
GND
RECEIVE
TRANSMIT
RTS
CTS
DSR
GND
DCD
DTR
TRANSMIT
RECEIVE
25 PIN
UNISITE (DTE)
25 PIN
MODEM (DCE)
NC
8
2
3
20
7
6
4
5
9-19
21-25
1
1
2
3
4
5
6
7
8
9
DCD
DATA
DATA
DTR
SIGNAL GND
DSR
RTS (HELD HIGH)
CTS
DCD
RECEIVE
TRANSMIT
DTR
GND
DSR
RTS
CTS
TRANSMIT
RECEIVE
25 PIN
UNISITE (DTE)
9 PIN
MODEM (DCE)
NC
NC
NC
NC
IN
OUT
Summary of Contents for UniSite-xpi
Page 2: ...981 0014 UniSite Programming System User Manual Also Covering Legacy UniSite Programmers ...
Page 72: ...2 Setup and Installation 2 42 UniSite xpi User Manual ...
Page 134: ...3 Getting Started 3 62 UniSite xpi User Manual ...
Page 238: ...5 Computer Remote Control 5 10 UniSite xpi User Manual ...
Page 296: ...6 Translation Formats 6 58 UniSite xpi User Manual ...
Page 402: ...Keep Current Subscription Service 6 Keep Current ...