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UXRCOM(4) NetBSD Kernel Interfaces Manual UXRCOM(4)
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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), modem(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 <firstname.lastname@example.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 <email@example.com>.
NetBSD 9.1 December 5, 2020 NetBSD 9.1