參數(shù)資料
型號(hào): RJ80530VY700256
英文描述: Microprocessor
中文描述: 微處理器
文件頁(yè)數(shù): 54/89頁(yè)
文件大小: 1672K
代理商: RJ80530VY700256
Mobile Intel
Pentium
III Processor-M Datasheet
54
Datasheet
298340-002
4.3
Non-AGTL Signal Quality Specifications
Signals driven to the Mobile Intel Pentium
III
Processor-M should meet signal quality specifications to
ensure that the processor reads data properly and that incoming signals do not affect the long-term
reliability of the processor. The overshoot and undershoot specifications for non AGTL signals are
shown in Table 35. Ringback must not exceed the CMOS V
IH
and V
IL
specification levels in Table 18.
Table 35. Non-AGTL Signal Group Overshoot/Undershoot Tolerance at the Processor Core
Allowed Pulse Duration (ns) [Tj=100C]
Max V
Cmos
+ Overshoot/Undershoot
Magnitude
(volts)
Activity Factor = 0.01 Activity Factor = 0.1 Activity Factor = 1
2.38
6.5
0.65
0.065
2.33
13
1.3
0.13
2.28
29
2.9
0.29
2.23
60
6
0.6
2.18
60
12
1.2
2.13
60
26
2.6
2.08
60
56
5.6
NOTES:
1.
2.
V
CMOS
(nominal) = 1.5V.
Under no circumstances should the sum of the Max V
CMOS
and absolute value of the Overshoot/Undershoot
voltage exceed 2.38V.
Activity factor of 1 represents a toggle rate of 33 MHz.
System designers are encouraged to follow Intel provided non-AGTL layout guidelines.
All values are specified by design characterization, and are not tested.
3.
4.
5.
4.3.1
PWRGOOD, VTTPWRGD Signal Quality Specifications
The processor requires PWRGOOD to be a clean indication that clocks and the power supplies (V
CC
,
V
CCT
, etc.) are stable and within their specifications. Clean implies that the signal will remain below
V
IL18
and without errors from the time that the power supplies are turned on, until they come within
specification. The signal will then transition monotonically to a high (1.8V) state. The VTTPWRGD
signal must also transition monotonically.
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