.TH DMASCC_CFG 1 "30 June 1999" Linux "Linux Programmer's Manual"
.SH NAME
dmascc_cfg \- Configure dmascc devices
.SH SYNOPSIS
.B dmascc <interface> [<options>]
.SH DESCRIPTION
.LP
.B dmascc_cfg
is used to configure dmascc devices such as PI2 and PackeTwin cards.  The
\fB\-\-show\fR option can be used by any user, all other options must be
used by root.
.SH OPTIONS
.TP 10
.BI "\-\-speed "\fIfrequency\fR
Set frequency of baud rate generator to \fIfrequency\fR. A value of 0
disables the baud rate generator and the digital PLL. Use the \fB\-\-show\fR
option to check whether the frequency you selected could be approximated
with sufficient accuracy.
.TP 10
.BI "\-\-nrzi "\fR[\fI0\fR|\fI1\fR]
\fI0\fR selects NRZ mode, \fI1\fR selects NRZI mode.
.TP 10
.BI "\-\-clocks "\fIinteger\fR
Set the clock mode. You may \fBOR\fR together three choices (other values
are not supported and may cause strange results).
.PP
TX clock pin:
.IP
.ta 1.5i
0x00 input
.br
0x05 output TX clock *
.br
0x06 output baud rate generator *
.br
0x07 output digital PLL *
.PP
TX clock source:
.IP
.ta 1.5i
0x00 RX clock pin
.br
0x08 TX clock pin #
.br
0x10 baud rate generator
.br
0x18 digital PLL +
.br
.PP
RX clock source:
.IP
.ta 1.5i
0x00 RX clock pin
.br
0x20 TX clock pin
.br
0x40 baud rate generator
.br
0x60 digital PLL +
.br
.PP
* Not allowed on PI2 Port A if J3 is installed.
.PP
# TX clock pin must be configured as input.
.PP
+ Speed must be equal to 32 times the baud rate.
.TP 10
.BI "\-\-txdelay "\fImilliseconds\fR
Set transmit delay to \fImilliseconds\fR. Maximum is 2500 ms.
.TP 10
.BI "\-\-txtime "\fIseconds\fR
Set maximum time the transmitter may be active to \fIseconds\fR.
.TP 10
.BI "\-\-sqdelay "\fImilliseconds\fR
Set the squelch delay to \fImilliseconds\fR. Maximum delay is 2500 ms.
.TP 10
.BI "\-\-slottime "\fImilliseconds\fR
Set the slot time to \fImilliseconds\fR. Maximum slottime is 2500 ms.
.TP 10
.BI "\-\-waittime "\fImilliseconds\fR
Set the minimum time between the transmitter turning off to when it turns
on to \fImilliseconds\fR. Maximum wait time is 2500 ms.
.TP 10
.BI "\-\-persist "\fIf\fR
Set the persistence parameter to \fIf\fR. Must be between 0 and 255
(inclusive).
.TP 10
.BI "\-\-dma "\fIchannel\fR
Set the DMA channel to \fIchannel\fR. Can be 1 or 3.  Setting to 0 disables
DMA.
.LP
.SH BUGS
.B dmascc_cfg
does not check the parameters for validity. The driver or kernel may crash
if you specify invalid values.
.SH AUTHORS
.nf
Klaus Kudielka
.br
This manual page written by Craig Small <csmall@small.dropbear.id.au>
.fi