NAME

       sbni — Granch SBNI12 leased line modem driver

SYNOPSIS

       device sbni

DESCRIPTION

       The sbni driver provides support for leased line modems of following models:

       •   SBNI12-02, SBNI12D-02
       •   SBNI12-04, SBNI12D-04
       •   SBNI12-05, SBNI12D-05, ISA and PCI
       •   SBNI12-10, SBNI12D-10, ISA and PCI

       and a kit for data link over a voice band:

       •   SBNI12-11, SBNI12D-11, ISA and PCI.

       In  addition to the standard port and IRQ specifications, the sbni driver also supports a number of flags
       which can set baud rate, receive level, and low three bytes  of  Ethernet  MAC-address  (high  three  are
       always 00:ff:01), because Granch modems are presented to the system as Ethernet-like network cards.

       The high byte of the flags is a bit field, it is used to specify SBNI adapter receive level/baud rate:

             Bits 0-3:  receive level (0x00..0x0f)

             Bits 4-5:  baud rate number:

                        00 - 0 baud rate (2Mb in fast mode/500kb in slow)
                        01 - 1 baud rate (1Mb/250kb)
                        10 - 2 baud rate (500kb/125kb)
                        11 - 3 baud rate (250kb/62.5kb)

             Bit 6:     use fixed receive level

                        if  bit  6  is set then receive level will be set according to bits 0-3 value, otherwise
                        receive level will be autodetected

             Bit 7:     use fixed baud rate

                        if bit 7 is set then baud rate will be set according to bits 4-5 value,  otherwise  baud
                        rate is set to 2Mb

FILES

       The sources for the driver reside in:

       /sys/dev/sbni/if_sbni.c
       /sys/dev/sbni/if_sbnireg.h
       /sys/dev/sbni/if_sbnivar.h

SEE ALSO

       arp(4), netintro(4), ifconfig(8)

HISTORY

       The sbni device driver first appeared in FreeBSD 4.6.

AUTHORS

       The  sbni  device  driver  for  FreeBSD  4.x  was  written by Denis I. Timofeev, partially based on David
       Greenman's ed(4) driver.  Earlier versions (available  on  ftp.granch.com)  were  written  by  Alexey  V.
       Zverev.

       SBNI12 hardware was designed by Alexey V. Chirkov.

Debian                                           January 8, 2002                                         SBNI(4)