UMCS(4FREEBSD) - man page online | special files

UMCS(4)                            BSD Kernel Interfaces Manual                           UMCS(4)

NAME
     umcs — USB support for serial adapters based on the MCS7820 and MCS7840 chips

SYNOPSIS
     To compile this driver into the kernel, place the following lines in your kernel configura‐
     tion file:

           device usb
           device ucom
           device umcs

     Alternatively, to load the driver as a module at boot time, place the following line in
     loader.conf(5):

           umcs_load="YES"

DESCRIPTION
     The umcs driver provides support for various multiport serial adapters based on the MosCom
     MCS7820 and MCS7840 chips.  They are 2- or 4-port adapters with full-featured 16550-compati‐
     ble UARTs and very flexible baud generators.  Also, these chips support RS422/RS485 and IrDA
     operations.

     The device is accessed through the ucom(4) driver which makes it behave like a tty(4).

     Different ports on device are presented as sub-units, like /dev/ttyU0.1 and /dev/ttyU0.2.

HARDWARE
     The umcs driver was tested on the following adapters:

     ·   ST Lab U-360 two-port serial USB adapter
     ·   ST Lab U-400 four-port serial USB adapter

SEE ALSO
     tty(4), ucom(4), usb(4)

HISTORY
     The umcs driver appeared in ports since December of 2010.

AUTHORS
     The umcs driver was written by Lev Serebryakov ⟨@FreeBSD.org⟩.

BUGS
     This driver doesn't support access to any fine tunes of chip, like RS522/RS485 mode, non-
     standard baudrates, etc.

BSD                                     February 25, 2012                                     BSD