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參數(shù)資料
| 型號： | Pentium OverDrive Processor |
| 廠商： | Intel Corp. |
| 英文描述： | Pentium OverDrive Processor With MMX Technology For Pentium Processor-Based System(帶MMX技術(shù)奔騰超速轉(zhuǎn)動處理器) |
| 中文描述： | 奔騰過驅(qū)動處理器的MMX技術(shù)的Pentium處理器為基礎(chǔ)的系統(tǒng)（帶MMX公司技術(shù)奔騰超速轉(zhuǎn)動處理器） |
| 文件頁數(shù)： | 27/61頁 |
| 文件大小： | 481K |
| 代理商： | PENTIUM OVERDRIVE PROCESSOR |
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E
Pentium
OverDrive
PROCESSOR WITH MMX
TECHNOLOGY
27
9/8/97 11:55 AM 29060701.DOC
PRELIMINARY
Table 8. Pin Functional Groupings Not Supported by
Pentium
OverDrive
Processor with MMX Technology
Function
Pins
APIC Support
PICCLK, PICD0-1
Dual Processing Private Bus Control
PBGNT#, PBREQ#, PHIT#, PHITM#
Functional Redundancy Checking
FRCMC#
Miscellaneous Dual Processing
CPUTYP, D/P#
Execution Tracing
BT3-BT0, IU, IV, IBT
3.0.
COMPONENT OPERATION
3.1.
Core to Bus Ratio for Higher
Speed
The Pentium OverDrive processor with MMX
technology incorporates an internal Phase Lock Loop
(PLL) and clock multiplier to generate the higher
internal speeds. This allows the internal processor
core to operate synchronously and at higher
frequencies than the external bus.
On the 200/180-MHz Pentium OverDrive processor
with MMX technology, the bus fraction configuration
will be preset to 3/1 internally and 166-MHz to 5/2.
See Table 9 for details.
Table 9. Core/Bus Frequencies
Internal
Speed
Bus
Speed
Replaces
(Core/Bus)
150-MHz
50-MHz
75/50-MHz
180-MHz
60-MHz
90/60-MHz
120/60-MHz
150/60-MHz
166-MHz
66-MHz
100/66-MHz
133/66-MHz
200-MHz
66-MHz
100/66-MHz
133/66-MHz
166/66-MHz
3.2.
Hardware Interface Differences
The Pentium OverDrive processor with MMX
technology is pin-for-pin compatible with the
respective original Pentium processors, except for
the additional pins defined by Socket 5 and 7 for the
Pentium OverDrive processor with MMX technology.
Some minor differences are discussed in this section
and are referenced in tables in previous section.
These differences represent features that are not
required for an end-user CPU upgrade.
3.2.1.
CPUTYP SIGNAL
The Pentium OverDrive processor with MMX
technology CPUTYP signal is internally tied to
ground and the signal pin on the package is an
internal no-connect (INC). The original Pentium
processor must be removed for the Pentium
OverDrive processor with MMX technology to
function properly.
3.3.
Processor Initialization
3.3.1.
POWER UP SPECIFICATION
The Pentium OverDrive processor with MMX
technology will boot like the respective original
Pentium processors. If the Pentium OverDrive
processor with MMX technology is installed in a
second socket of dual socket system the primary
CPU must be removed or the system will not boot
properly.
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