參數(shù)資料
型號(hào)： Embedded Pentium Processor
廠商： Intel Corp.
英文描述： 32 Bit Embedded Pentium Processor with Voltage Reduction Technology(32位嵌入式帶壓降技術(shù)奔騰處理器)
中文描述： 32位嵌入式電壓還原技術(shù)奔騰處理器（32位嵌入式帶壓降技術(shù)奔騰處理器）
文件頁(yè)數(shù)： 43/44頁(yè)
文件大?。?/td> 826K
代理商： EMBEDDED PENTIUM PROCESSOR
Embedded Pentium
Processor with Voltage Reduction Technology
Datasheet
43
4.4.2
Signal Quality Specifications
Signals driven by the system into the embedded Pentium processor with voltage reduction
technology must meet signal quality specifications to guarantee that the components read data
properly and to ensure that incoming signals do not affect the reliability of the component. There
are two signal quality parameters: ringback and settling time.
4.4.2.1
Ringback
Excessive ringback can contribute to long-term degradation of the reliability of the embedded
Pentium processor with voltage reduction technology, and can cause false signal detection.
Ringback is simulated at the input pin of a component using the input buffer model. Ringback can
be simulated with or without the diodes that are in the input buffer model.
Ringback is the absolute value of the maximum voltage at the receiving pin below V
CC3
(or above
V
SS
) relative to the V
CC3
(or V
SS
) level after the signal has reached its maximum voltage level.
The input diodes are assumed present.
Maximum Ringback on Inputs = 0.8 V (with diodes)
If simulated without the input diodes, follow the maximum overshoot/undershoot specification. By
meeting the overshoot/undershoot specification, the signal is guaranteed not to ringback
excessively. If simulated with the diodes present in the input model, follow the maximum ringback
specification.
Overshoot (undershoot) is the absolute value of the maximum voltage above V
CC3
(below V
SS
).
The guideline assumes the absence of diodes on the input.
The maximum overshoot/undershoot on the 3.3-V embedded Pentium processor with voltage
reduction technology inputs (not CLK) = 1.4 V above V
CC3
(without diodes)
Figure 16. Overshoot/Undershoot and Ringback Guidelines
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