ADSP-21368(RevA) Ver la hoja de datos (PDF) - Analog Devices

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ADSP-21368
(Rev.:RevA)

SHARC® Processors

Analog Devices 

ADSP-21367/ADSP-21368/ADSP-21369

Use the exact timing information given. Do not attempt to

derive parameters from the addition or subtraction of others.

While addition or subtraction would yield meaningful results

for an individual device, the values given in this data sheet

reflect statistical variations and worst cases. Consequently, it is

not meaningful to add parameters to derive longer times. See

Figure 39 on Page 47 under Test Conditions for voltage refer-

ence levels.

Switching Characteristics specify how the processor changes its

signals. Circuitry external to the processor must be designed for

compatibility with these signal characteristics. Switching char-

acteristics describe what the processor will do in a given

circumstance. Use switching characteristics to ensure that any

timing requirement of a device connected to the processor (such

as memory) is satisfied.

Timing Requirements apply to signals that are controlled by cir-

cuitry external to the processor, such as the data input for a read

operation. Timing requirements guarantee that the processor

operates correctly with other devices.

Rev. A | Page 20 of 56 | August 2006

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