DMASCC_CFG(1) Linux Programmer's Manual DMASCC_CFG(1)NAME
dmascc_cfg - Configure dmascc devices
SYNOPSIS
dmascc <interface> [<options>]
DESCRIPTION
dmascc_cfg is used to configure dmascc devices such as PI2 and PackeTwin cards. The --show option can be used by any user, all other
options must be used by root.
OPTIONS --speed frequency
Set frequency of baud rate generator to frequency. A value of 0 disables the baud rate generator and the digital PLL. Use the
--show option to check whether the frequency you selected could be approximated with sufficient accuracy.
--nrzi [0|1]
0 selects NRZ mode, 1 selects NRZI mode.
--clocks integer
Set the clock mode. You may OR together three choices (other values are not supported and may cause strange results).
TX clock pin:
0x00 input
0x05 output TX clock *
0x06 output baud rate generator *
0x07 output digital PLL *
TX clock source:
0x00 RX clock pin
0x08 TX clock pin #
0x10 baud rate generator
0x18 digital PLL +
RX clock source:
0x00 RX clock pin
0x20 TX clock pin
0x40 baud rate generator
0x60 digital PLL +
* Not allowed on PI2 Port A if J3 is installed.
# TX clock pin must be configured as input.
+ Speed must be equal to 32 times the baud rate.
--txdelay milliseconds
Set transmit delay to milliseconds. Maximum is 2500 ms.
--txtime seconds
Set maximum time the transmitter may be active to seconds.
--sqdelay milliseconds
Set the squelch delay to milliseconds. Maximum delay is 2500 ms.
--slottime milliseconds
Set the slot time to milliseconds. Maximum slottime is 2500 ms.
--waittime milliseconds
Set the minimum time between the transmitter turning off to when it turns on to milliseconds. Maximum wait time is 2500 ms.
--persist f
Set the persistance parameter to f. Must be between 0 and 255 (inclusive).
--dma channel
Set the DMA channel to channel. Can be 1 or 3. Setting to 0 disables DMA.
BUGS
dmascc_cfg does not check the parameters for validity. The driver or kernel may crash if you specify invalid values.
AUTHORS
Klaus Kudielka
This manual page written by Craig Small <csmall@small.dropbear.id.au>
Linux 30 June 1999 DMASCC_CFG(1)
Check Out this Related Man Page
syncinit(1M) System Administration Commands 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 communications 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
specified 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 elec-
trically disconnected from the DCE
receive data input and tied to the
outgoing transmit data line. Transmit
data is available to the DCE. The Dig-
ital 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 loopback mode. If no
other clocking options have been spec-
ified, 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 disconnected from the
transmitter and tied to the receive
data input. Incoming receive data is
still visible. Use of this mode in
combination with local loopback 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
encoding.
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 out-
put 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 out-
put of the DPLL circuit.
speed integer Set the baud rate to integer bits per
second.
There are also several single-word options that set one or more paramaters 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
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSOsyncloop(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.
SunOS 5.10 9 Mar 1993 syncinit(1M)