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參數(shù)資料
| 型號： | BX80525U667256E |
| 廠商： | INTEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 667 MHz, MICROPROCESSOR, XMA |
| 文件頁數(shù)： | 26/102頁 |
| 文件大小： | 878K |
| 代理商： | BX80525U667256E |
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Datasheet
3
Pentium III Processor for the SC242 at 450 MHz to 800 MHz
Contents
1.0
Introduction......................................................................................................................... 9
1.1
Terminology......................................................................................................... 10
1.1.1
S.E.C.C.2 and S.E.C.C. Packaged Processor Terminology ..................10
1.1.2
Processor Naming Convention...............................................................11
1.2
Related Documents............................................................................................. 11
2.0
Electrical Specifications....................................................................................................13
2.1
Processor System Bus and VREF .......................................................................................... 13
2.2
Clock Control and Low Power States.................................................................. 14
2.2.1
Normal State—State 1 ........................................................................... 15
2.2.2
AutoHALT Powerdown State—State 2................................................... 15
2.2.3
Stop-Grant State—State 3 .....................................................................15
2.2.4
HALT/Grant Snoop State—State 4 ........................................................ 16
2.2.5
Sleep State—State 5.............................................................................. 16
2.2.6
Deep Sleep State—State 6 .................................................................... 16
2.2.7
Clock Control.......................................................................................... 17
2.3
Power and Ground Pins ...................................................................................... 17
2.4
Decoupling Guidelines ........................................................................................ 17
2.4.1
Processor VCCCORE Decoupling............................................................17
2.4.2
Processor System Bus AGTL+ Decoupling............................................18
2.5
Processor System Bus Clock and Processor Clocking ....................................... 18
2.6
Voltage Identification ........................................................................................... 18
2.7
Processor System Bus Unused Pins................................................................... 20
2.8
Processor System Bus Signal Groups ................................................................ 20
2.8.1
Asynchronous vs. Synchronous for System Bus Signals ....................... 21
2.8.2
System Bus Frequency Select Signal (BSEL0)...................................... 21
2.9
Test Access Port (TAP) Connection.................................................................... 23
2.10
Maximum Ratings................................................................................................ 24
2.11
Processor DC Specifications............................................................................... 25
2.12
AGTL+ System Bus Specifications .....................................................................29
2.13
System Bus AC Specifications ............................................................................30
3.0
Signal Quality Specifications ............................................................................................ 38
3.1
BCLK, PICCLK, and PWRGOOD Signal Quality Specifications and
Measurement Guidelines .................................................................................... 38
3.2
AGTL+ and Non-AGTL+ Overshoot/Undershoot Specifications and
Measurement Guidelines .................................................................................... 39
3.2.1
Overshoot/Undershoot Magnitude ......................................................... 39
3.2.2
Overshoot/Undershoot Pulse Duration................................................... 40
3.2.3
Overshoot/Undershoot Activity Factor.................................................... 40
3.2.4
Reading Overshoot/Undershoot Specification Tables............................ 41
3.2.5
Determining if a System meets the Overshoot/Undershoot
Specifications .........................................................................................42
3.3
AGTL+ and Non-AGTL+ Ringback Specifications and Measurement
Guidelines ........................................................................................................... 44
3.3.1
Settling Limit Guideline........................................................................... 46
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