SYNCINIT man page on SmartOS

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SYNCINIT(1M)							  SYNCINIT(1M)

NAME
       syncinit - set serial line interface operating parameters

SYNOPSIS
       /usr/sbin/syncinit device
	    [ [baud_rate] | [keyword=value,]... | [single-word option]]

DESCRIPTION
       The  syncinit  utility  allows  the user to modify some of the hardware
       operating modes common to synchronous serial lines. This can be	useful
       in  troubleshooting a link, or necessary to the operation of a communi‐
       cations package.

       If run without options, syncinit reports the options as	presently  set
       on  the	port.  If options are specified, the new settings are reported
       after they have been made.

OPTIONS
       Options to syncinit normally take the form of a keyword, followed by an
       equal sign and a value. The exception is that a baud rate may be speci‐
       fied as a decimal integer by itself. Keywords must begin with the value
       shown  in  the  options table, but may contain additional letters up to
       the equal sign. For example,  loop= and loopback= are equivalent.

       The following options are supported:

       Keyword	 Value	   Effect
       loop	 yes	   Set the port to operate
			   in	internal  loopback
			   mode. The  receiver	is
			   electrically	   discon‐
			   nected  from	 the   DCE
			   receive  data input and
			   tied	 to  the  outgoing
			   transmit   data   line.
			   Transmit data is avail‐
			   able	 to  the  DCE. The
			   Digital    Phase-Locked
			   Loop	 (DPLL) may not be
			   used as a clock  source
			   in  this  mode.  If	no
			   other clocking  options
			   have	  been	specified,
			   perform the	equivalent
			   of	  txc=baud     and
			   rxc=baud.
		 no	   Disable internal  loop‐
			   back mode.  If no other
			   clocking  options  have
			   been specified, perform
			   the	  equivalent	of
			   txc=txc and rxc=rxc.

       echo	 yes	   Set the port to operate
			   in auto-echo mode.  The
			   transmit data output is
			   electrically	   discon‐
			   nected  from the trans‐
			   mitter and tied to  the
			   receive   data   input.
			   Incoming  receive  data
			   is  still visible.  Use
			   of this mode in  combi‐
			   nation with local loop‐
			   back mode has no value,
			   and	should be rejected
			   by the  device  driver.
			   The	auto-echo  mode is
			   useful to make a system
			   become  the endpoint of
			   a remote loopback test.
		 no	   Disable auto-echo mode.
       nrzi	 yes	   Set the port to operate
			   with	 NRZI  data encod‐
			   ing.
		 no	   Set the port to operate
			   with NRZ data encoding.
       txc	 txc	   Transmit  clock  source
			   will be the TxC  signal
			   (pin 15).
		 rxc	   Transmit  clock  source
			   will be the RxC  signal
			   (pin 17).
		 baud	   Transmit  clock  source
			   will	 be  the  internal
			   baud rate generator.
		 pll	   Transmit  clock  source
			   will be the	output	of
			   the DPLL circuit.
       rxc	 rxc	   Receive   clock  source
			   will be the RxC  signal
			   (pin 17).
		 txc	   Receive   clock  source
			   will be the TxC  signal
			   (pin 15).
		 baud	   Receive   clock  source
			   will	 be  the  internal
			   baud rate generator.
		 pll	   Receive   clock  source
			   will be the	output	of
			   the DPLL circuit.
       speed	 integer   Set	the  baud  rate to
			   integer bits	 per  sec‐
			   ond.

       There  are  also several single-word options that set one or more para‐
       maters at a time:

       Keyword	  Equivalent to Options:
       external	  txc=txc rxc=rxc loop=no
       sender	  txc=baud rxc=rxc loop=no
       internal	  txc=pll rxc=pll loop=no
       stop	  speed=0

EXAMPLES
       Example 1 Using syncinit

       The following command sets the first CPU port to loop internally, using
       internal clocking and operating at 38400 baud:

	 example# syncinit zsh0 38400 loop=yes
	 device: /dev/zsh  ppa: 0
	 speed=38400, loopback=yes, echo=no, nrzi=no, txc=baud, rxc=baud

       The following command sets the same port's clocking, local loopback and
       baud rate settings to their default values:

	 example# syncinit zsh0 stop loop=no
	 device: /dev/zsh  ppa: 0
	 speed=0, loopback=no, echo=no, nrzi=no, txc=txc, rxc=rxc

SEE ALSO
       syncloop(1M), syncstat(1M), intro(2), ioctl(2), attributes(5),  zsh(7D)

DIAGNOSTICS
       device missing minor device number

	   The name  device does not end in a decimal number that can be  used
	   as a minor device number.

       bad speed: arg

	   The	string	 arg  that accompanied the  speed= option could not be
	   interpreted as a decimal integer.

       Bad arg: arg

	   The string  arg did not make sense as an option.

       ioctl failure code = errno

	   An ioctl(2) system called failed. The meaning of the value of errno
	   may be found in intro(2).

WARNINGS
       Do  not use syncinit on an active serial link, unless needed to resolve
       an error condition. Do not use this command casually or	without	 being
       aware of the consequences.

				  Mar 9, 1993			  SYNCINIT(1M)
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