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 ⟨[email protected]⟩.