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142 AMD Geode™ SC1200/SC1201 Processor Data Book
Core Logic Module
32579B
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-PCI
PCI Interface
X-Bus
AC97
PCI
ISA/PIC/PIT/DMA
USB
33-66 MHz
33 MHz
Reg.
GPIOs
GPIOs