1.\" $OpenBSD: uchcom.4,v 1.3 2024/04/12 00:43:32 kevlo Exp $ 2.\" 3.\" Copyright (c) 2007 Jonathan Gray <jsg@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: April 12 2024 $ 18.Dt UCHCOM 4 19.Os 20.Sh NAME 21.Nm uchcom 22.Nd WinChipHead CH343/341/340 based USB serial adapter 23.Sh SYNOPSIS 24.Cd "uchcom* at uhub?" 25.Cd "ucom* at uchcom?" 26.Sh DESCRIPTION 27The 28.Nm 29driver supports WinChipHead CH343/341/340 serial devices. 30.Pp 31The CH341/340 devices only support a variety of baud rates 32up to 921600. 33CH343 devices support any baud rate up to 6 Mbps. 34.Sh SEE ALSO 35.Xr tty 4 , 36.Xr ucom 4 , 37.Xr uhub 4 , 38.Xr usb 4 39.Sh HISTORY 40The 41.Nm 42device driver first appeared in 43.Ox 4.3 . 44.Sh AUTHORS 45.An -nosplit 46The 47.Nm 48driver was written by 49.An Takuya SHIOZAKI Aq Mt tshiozak@netbsd.org 50and ported to 51.Ox 52by 53.An Jonathan Gray Aq Mt jsg@openbsd.org . 54