AMD Geode™ SC2200 Processor Data Book 95
5
SuperI/O Module 32580B
5.0SuperI/O Module
The SuperI/O (SIO) module is PC98 and ACPI compliant. It
offers a single-cell solution to the most commonly used ISA
peripherals.
The SIO module incorporates: two Serial Ports, an Infrared
Communication Port that supports FIR, MIR, HP-SIR,
Sharp-IR, and Consumer Electronics-IR, a full IEEE 1284
Parallel Port, two ACCESS.bus Interface (ACB) ports, Sys-
tem Wakeup Control (SWC), and a Real-Time Clock (RTC)
that provides RTC timekeeping.
Outstanding Features
Full compatibility with ACPI Revision 1.0 requirements.
System Wakeup Control powered by VSB, generates
power-up request and a PME (power management
event) in response to SDATA_IN2 (an audio codec),
IRRX1 (a pre-programmed CEIR), or a RI2# (Serial Port
ring indicate) event.
Advanced RTC, Y2K compliant.

Figure 5-1. SIO Block Diagram

Wakeup
Events
Host Interface
ISA
Interface
AB2DPWUREQ
IR Comunication
Infrared /Serial
Interface
Serial Port 2
Serial
Interface VSB
VBAT
Port/Serial Port 3
Serial
Interface
System Wakeup
Control
Real-Time Clock
AB2C
ACCESS.bus 2
AB1DAB1C
ACCESS.bus 1 IEEE 1284
Parallel Po rt
Parallel Po rt
Interface
Serial Port 1