Interface Pin Assignment; Pin Serial I/F; Pin Serial I/F (Rs-232C) - Casio IT-2000 Service Manual

3. INTERFACE PIN ASSIGNMENT

3.1 8 Pin serial I/F

8 7
5 4
2

3.2 14 Pin serial I/F (RS-232C)

8 9 10 11
1 2 3 4
6
3
1
12 13 14
5 6 7
— 5 —
PIN No. Signal Name
1 SD
2 RD
3 RS
4 CS
5 VOUT
6 GND
7 ER
8 DR
PIN No. Signal Name
1 GND
2 GND
3 NC
4 SD
5 RD
6 RS
7 ER
8 CS
9 CI
10 DR
11 CD
12 EXSW
13 V
H
14 V
H
Description
Send data
Receive data
Request to send
Clear to send
Power
Ground
Equipment ready
Data set ready
Description
Ground
Ground
No Connect
Send data
Receive data
Request to send
Equipment ready
Clear to send
Carrier indicater
Data set ready
Carrier detect
External Switch
Power
Power