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LEARN ABOUT FREEBSD

umcs

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 configuration 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-compatible UARTs and very flexible baud generators.  Also, these chips support RS422/RS485 and IrDA opera-
     tions.

     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:

     o	 ST Lab U-360 two-port serial USB adapter
     o	 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 <lev@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