AMD-762 Advanced Micro Devices, AMD-762 Datasheet - Page 37

• Manufacturer Part Number: AMD-762
• Description: System Controller
• Manufacturer: Advanced Micro Devices

24416C—December 2001
2.6
Figure 9.
Chapter 2
AMD Athlon™
Power Management
Processors
Power Management Signal Connections
0 and 1
Th e AMD-762 system con t r ol l e r s u p p o r t s th e Adva n c e d
Configuration Power Interface (ACPI) specification, On-Now,
and PC 99 requirements through a handshake mechanism with
the processor. The ACPI-defined registers required for processor
a n d s y s t e m p owe r m a n a g e m e n t a r e c o n t a i n e d i n t h e
S o u t h b r i d ge. SMM m e m o ry re m a p p i n g is h a n d l e d by a
model-specific register in the AMD Athlon processor. See the
AMDAthlon™ BIOS Developers Guide, order# 21656, for more
information about the SMM remapping operation.
Figure 9 shows how the processor and system controller
communicate power-state transitions.
AMD Athlon
System Bus
Processor
133-MHz
System
Clocks
Preliminary Information
Functional Operation
AMD-762™ Sys-
66-MHz
tem Controller
DDR SDRAMs
(Northbridge)
Clock
AGP
CLK
Clock Generator
CKE
33-MHz
Clocks
PCI
DCSTOP#
AMD-762™ System Controller Data Sheet
RESET#
PCI BUS
STPCLK#
Bus Controller
(Southbridge)
AMD-768™
Peripheral
25