參數(shù)資料
型號: pentium II xeon processor
廠商: Intel Corp.
英文描述: pentium II xeon processor at 400 and 450 MHZ(工作頻率400和450兆赫茲奔II處理器)
中文描述: 奔騰II至強處理器400和450兆赫(工作頻率400和450兆赫茲奔二處理器)
文件頁數(shù): 37/97頁
文件大?。?/td> 978K
代理商: PENTIUM II XEON PROCESSOR
E
PENTIUM II XEON PROCESSOR AT 400 AND 450 MHZ
37
12/15/98 5:14 PM 24377002.doc
Table 20. AGTL+ Overshoot/Undershoot Guidelines at the Processor Core
Guideline
Transition
Signal Must Maintain
Unit
Figure
Overshoot
0
1
< 2.7
V
15
Undershoot
1
0
> -0.7
V
15
Undershoot
Overshoot
Settling Limit
Settling Limit
Rising-Edge
Ringback
Falling-Edge
Ringback
V
LO
V
SS
Time
V =
V
CC
2.5
Voltage
3770-15
Figure 15. Non-AGTL+ Overshoot/Undershoot, Settling Limit, and Ringback
3.3.
Non-AGTL+ Signal Quality
Specifications
There are three signal quality parameters defined for
non-AGTL+ signals: overshoot/undershoot, ringback,
and settling limit. All three signal quality parameters
are shown in Figure 15 for the non-AGTL+ signal
group at the processor core pads.
3.3.1.
2.5 V TOLERANT BUFFER
OVERSHOOT/UNDERSHOOT
GUIDELINES
The overshoot/undershoot guideline limits transitions
beyond V
CC
or V
SS
due to fast signal edge rates.
(See Figure 15 for non-AGTL+ signals.) The
processor can be damaged by repeated overshoot or
undershoot events on 2.5 V tolerant buffers if great
enough. The overshoot/undershoot guideline is
shown in Table 21
.
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