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Superi/o module, Figure 5-1, Sio block diagram – AMD Geode SC1201 User Manual

Page 89: 0 superi/o module

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AMD Geode™ SC1200/SC1201 Processor Data Book

89

5

SuperI/O Module

32579B

5.0

SuperI/O Module

The SuperI/O (SIO) module is a PC98 and ACPI compliant
SIO that 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 V

SB

, 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

AB2D

PWUREQ

IR Comunication

Infrared /Serial

Interface

Serial Port 2

Serial

Interface

V

SB

V

BAT

Port/Serial Port 3

Serial

Interface

System Wakeup

Control

Real-Time Clock

AB2C

ACCESS.bus 2

AB1D

AB1C

ACCESS.bus 1

IEEE 1284

Parallel Port

Parallel Port

Interface

Serial Port 1

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