GSCSIO(4) - Device Drivers Manual #
GSCSIO(4) - Device Drivers Manual
NAME #
gscsio - National Semiconductor Geode SC1100 I2C controller
SYNOPSIS #
gscsio* at isa? iic* at gscsio?
DESCRIPTION #
The gscsio driver provides support for the National Semiconductor Geode SC1100 System-on-Chip Super I/O module. The Super I/O (SIO) module incorporates one serial port, an infrared communication port, two ACCESS.bus interface (ACB) ports, system wakeup control (SWC), and a real-time clock (RTC). Only the ACCESS.bus interface is currently supported.
ACB is a two-wire synchronous serial interface compatible with the
Philips'
I2C
bus, and can be accessed through the
iic(4)
framework.
The
gscsio
driver
programs the ACB port to work with a standard
I2C
frequency 100kHz.
SEE ALSO #
HISTORY #
The gscsio driver first appeared in OpenBSD 3.6.
AUTHORS #
The gscsio driver was written by Alexander Yurchenko <grange@openbsd.org>.
OpenBSD 7.5 - July 16, 2013