Connector Pin Assignments - Texas Instruments TravelMate 3000 User Manual

RS-232C Connector
Nine-Pin RS-232C Serial Connector
Pin No. Signal Name
1 Carrier detect
2 Receive data
3 Transmit data
4 Data terminal ready
5 Signal ground
6 Data set ready
7 Request to send
8 Clear to send
9 Ring indicator
25-Pin Centronics-Type
Parallel Connector
Pin No. Signal Name
1 Strobe
2 Data 0
3 Data I
4 Data 2
5 Data 3
6 Data 4
7 Data 5
8 Data 6
9 Data 7
10 Acknowledge
11 Busy
12 Paper empty
13 Select
14 Auto feed
15 Printer error
16 Initialize printer
17 Select input
18-25 Ground

Connector Pin Assignments

Abbreviation
CD
RD
TD
DTR
SG
DSR
RTS
CTS
Pi
Abbreviation
STROBE-
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
ACK-
BUSY
PE
SLCT
AUTO FEED-
PERROR-
INIT-
SLCT IN-
GND
Direction
Input
Input
Output
Output
Input
Output
Input
Input
Direction
Output
Output
Output
Output
Output
Output
Output.
Output
Output
Input
Input
Input
Input
Output
Input
Output
Output
G