Rs-449 Null Modem Cable; Table B-1 Rs-449 Signals; Table B-2 X.21 Signals - Sun Microsystems Sun PCI High Speed User Manual

RS-449 Null Modem Cable

and
TABLE B-1 TABLE B-2
RS-449 Signals
TABLE B-1
Circuit
TxD
RxD
TxC
TxCI
RxC
RTS
CTS
DCD
DTR
DSR
SG
X.21 Signals
TABLE B-2
Circuit
G
T
R
C
I
S
B
list the signals and names for RS-499 and X.21 circuits
Name
Transmit Data
Receive Data
Transmit Clock
Transmit Clock In
Receive Clock
Request to Send
Clear to Send
Data Carrier Detect
Data Terminal Ready
Data Set Ready
Signal Ground
Name
Signal Ground
Transmit
Receive
Control
Indication
Signal Element Timing
Byte Timing
Appendix B
Direction
To DCE
From DCE
To DCE
From DCE
From DCE
To DCE
From DCE
From DCE
To DCE
From DCE
Direction
To DCE
From DCE
To DCE
From DCE
From DCE
From DCE
Null Modem Cable Requirements 31