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UXRCOM(4)                    Device Drivers Manual                   UXRCOM(4)

     uxrcom - Exar XR21V141x USB serial adapter

     uxrcom* at uhub?
     ucom* at uxrcom?

     The uxrcom driver supports serial adapters based on the XR21V1410,
     XR21V1412, and XR21V1414 chipsets.  Devices range from single port to
     eight port (implemented as a USB hub and two uxrcom four port instances
     behind it).  Examples of hardware known to work with this driver are:

           Gearmo GM-U28RS232 8 Port USB to Serial DB9 RS232 Adapter

     The uxrcom driver attaches the Exar XR21V141x multiport chipset with
     individual port drivers via ucom(4), which makes it behave like a tty(4).

     tty(4), ucom(4), uhub(4), umodem(4), usb(4)

     The uxrcom device driver first appeared in OpenBSD 6.5 and in NetBSD 9.1.

     The uxrcom driver for the single port XR21V1410 was written by Mark
     Kettenis <kettenis@openbsd.org>.  The multi-port NetBSD driver is based
     on the OpenBSD driver but uses the common umodem(4) framework.  The
     NetBSD driver was written by by Simon Burge <simonb@NetBSD.org>.

NetBSD 9.99                     April 12, 2020                     NetBSD 9.99