參數(shù)資料
型號: 82443ZX
廠商: INTEL CORP
元件分類: 存儲控制器/管理單元
英文描述: Intel㈢ 440ZX AGPset: Host Bridge/Controller
中文描述: DRAM CONTROLLER, PBGA492
封裝: BGA-492
文件頁數(shù): 101/116頁
文件大?。?/td> 533K
代理商: 82443ZX
82443ZX Host Bridge Datasheet
4-21
Functional Description
4.7
System Clocking
Figure 4-2 shows the clock architecture for a typical Intel
440ZX AGPset system.
4.8
Power Management
This section focuses on the 82443ZX power management features only. The PIIX4E datasheet
along with this section provide the complete system power management description.
4.8.1
Overview
Power Management Features Supported by the 82443ZX
Clock Control
SMRAM
ACPI and PCI-PM
Low-Power Modes Supported by the 82443ZX
The 82443ZX supports a minimum of system-wide low power modes using the following
functions:
Hardware interface with PIIX4E is used to indicate:
— Whether to reset “resume logic” during resume from Suspend to Disk (STD).
Based on the above function, the 82443ZX distinguishes the following system-wide low power
modes:
STD resume is handled the same as power on sequence, including complete reset of 82443ZX
state.
Figure 4-2. Typical Intel
440ZX AGPset System Clocking
DCLK[15:0]
DCLK
100/66MHz
DCLKWR
82443ZX
CK100
Pentium
II
Processor
CKBF
SDRAM
GCLKIN
GCLKOUT
133/66MHz
BXHCLK
100/66MHz
PCLKx
33 MHz
BXPCLKx
33 MHz
CPU/HCLK
100/66MHz
100/66#
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