NEC SOPHO IP 5000 Command Reference Manual page 132

idle-mark
invert transmit-clock
Command Reference Guide
If this function has been disabled on a serial interface, the system will not detect
the DCD and DSR/DTR signals when determining the state (UP or DOWN) of
the serial interface.
Example
Disable the serial interface to make data carrier detection.
[NEC-PHILIPS-Serial0/0/0]undo detect dcd
Syntax
idle-mark
undo idle-mark
View
Synchronous serial interface view
Parameter
None
Description
Using the idle-mark command, you can set the line idle-mark of the
synchronous serial interface to "FF". Using the undo idle-mark command, you
can restore the line idle-mark of the synchronous serial interface to "7E".
Line idle-mark of synchronous serial interfaces defaults to "7E".
In normal circumstances, the synchronous serial interface uses the code "7E" to
identify the idle state of the line. However, there are still some devices that use
"FF" (that is, the high level of all "1s") to make the identification. For the sake of
compatibility in this case, it is necessary to configure the line idle-mark of the
synchronous serial interface.
Example
Set the line idle-mark of the synchronous serial interface to FF.
[NEC-PHILIPS-Serial0/0/0]idle-mark
Syntax
invert transmit-clock
undo invert transmit-clock
View
Serial interface view
Parameter
None
Description
Using the invert transmit-clock command, you can enable the inverting of the
transmit-clock signal of the synchronous serial interface at the DTE side. Using
the undo invert transmit-clock command, you can disable inverting the
signal.
By default, transmit-clock signal inversion is disabled on the synchronous serial
interface at DTE side.
In some special cases, for the purpose of eliminating the half-period delay of the
clock on the line, you may make the configuration to make the system invert the
transmit-clock signal of the synchronous serial interface at the DTE side. This
SOPHO
IP 5000/SOPHO IP6000
132