1DMASCC_CFG(1)              Linux Programmer's Manual             DMASCC_CFG(1)
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NAME

6       dmascc_cfg - Configure dmascc devices
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SYNOPSIS

9       dmascc <interface> [<options>]
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DESCRIPTION

12       dmascc_cfg  is  used  to configure dmascc devices such as PI2 and Pack‐
13       eTwin cards.  The --show option can be used  by  any  user,  all  other
14       options must be used by root.
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OPTIONS

17       --speed frequency
18                 Set frequency of baud rate generator to frequency. A value of
19                 0 disables the baud rate generator and the digital  PLL.  Use
20                 the --show option to check whether the frequency you selected
21                 could be approximated with sufficient accuracy.
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23       --nrzi [0|1]
24                 0 selects NRZ mode, 1 selects NRZI mode.
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26       --clocks integer
27                 Set the clock mode. You may OR together three choices  (other
28                 values are not supported and may cause strange results).
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30       TX clock pin:
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32              0x00 input
33              0x05 output TX clock *
34              0x06 output baud rate generator *
35              0x07 output digital PLL *
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37       TX clock source:
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39              0x00 RX clock pin
40              0x08 TX clock pin #
41              0x10 baud rate generator
42              0x18 digital PLL +
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44       RX clock source:
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46              0x00 RX clock pin
47              0x20 TX clock pin
48              0x40 baud rate generator
49              0x60 digital PLL +
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51       * Not allowed on PI2 Port A if J3 is installed.
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53       # TX clock pin must be configured as input.
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55       + Speed must be equal to 32 times the baud rate.
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57       --txdelay milliseconds
58                 Set transmit delay to milliseconds. Maximum is 2500 ms.
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60       --txtime seconds
61                 Set maximum time the transmitter may be active to seconds.
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63       --sqdelay milliseconds
64                 Set  the squelch delay to milliseconds. Maximum delay is 2500
65                 ms.
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67       --slottime milliseconds
68                 Set the slot time to milliseconds. Maximum slottime  is  2500
69                 ms.
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71       --waittime milliseconds
72                 Set  the  minimum time between the transmitter turning off to
73                 when it turns on to milliseconds. Maximum wait time  is  2500
74                 ms.
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76       --persist f
77                 Set the persistance parameter to f. Must be between 0 and 255
78                 (inclusive).
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80       --dma channel
81                 Set the DMA channel to channel. Can be 1 or 3.  Setting to  0
82                 disables DMA.
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BUGS

85       dmascc_cfg  does  not  check the parameters for validity. The driver or
86       kernel may crash if you specify invalid values.
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AUTHORS

89       Klaus Kudielka
90       This manual page written by Craig Small <csmall@small.dropbear.id.au>
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94Linux                            30 June 1999                    DMASCC_CFG(1)