USLSA(4) Device Drivers Manual USLSA(4)

uslsa — USB support for Silicon Labs CP210x series serial adapters

uslsa* at uhub?
ucom* at uslsa?

The uslsa driver is known to work with the following adapters:

Adafruit 954 USB to TTL Serial Cable
 
Helicomm IP-Link 1220-DVM
 
Nokia CA-42 USB
 
Siemens MC60 Data Cable
 
Suunto USB Serial Adaptor
 

The uslsa driver provides support for the Silicon Labs USB-to-RS-232 Bridge chip.

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

tty(4), ucom(4), usb(4)

Silicon Laboratories.

Silicon Laboratories AN571: CP210x Virtual COM Port Interface..

The uslsa driver appeared in NetBSD 4.0.

The uslsa driver was written by Jonathan A. Kollasch. Code and style was borrowed from existing NetBSD USB-serial drivers.

Settings other than 8 data bits, no parity, and 1 stop bit seem to be refused by the CP2101.

January 27, 2019 NetBSD 11.0