150 AMD Geode™ SC2200 Processor Data Book
Core Logic Module
32580B
Integrated Audio
AC97 Version 2.0 compliant interface to audio codecs
Secondary codec support
AMC97 codec support
Video Processor Interface
Synchronous serial interface to the Video Processor
Translates video and clock control register accesses
from PCI to serial interface
Supports both reads and writes of Video Processor
registers
Retries Fast-PCI bus accesses until Core Logic
completes the transfer over the serial interface
Low Pin Count (LPC) Interface
Based on Intel LPC Interface Specification Revision 1.0
Serial IRQ support
6.2 Module Architecture
The Core Logic architecture provides the internal functional
blocks shown in Figure 6-1.
Fast-PCI interface to external PCI bus
IDE controllers (UDMA-33)
USB controllers
Sub-ISA bus interface
AT compatibility logic (legacy)
ACPI compliant power management (includes GPIO
interfaces, such as joystick)
Integrated audio controller
Low Pin Count (LPC) Interface

Figure 6-1. Core Logic Module Block Diagram

IDE
Config.
PW LPC Legacy
ACPI/PM
Audio
UDMA33
USB
LPC Sub-ISA
Fast X-Bus
Controller
Fast-PC I
PCI Interface
X-Bus AC97
PCI
ISA/PIC/PIT/DMA
USB
33-66 MHz
33 MHz
Reg.
GPIOs
GPIOs