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)