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DescriptionQ605
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Q605DesignDVAppleASIC interview problem

Why synchronized async-FIFO pointers are conservative

TechniquesDesignDVAsync FIFOGray pointer
DifficultyMedium
TopicClock Domain Crossing
LanguageSystemVerilog
Format4 choices
01

Problem

In an asynchronous FIFO, the write domain sees a delayed synchronized copy of the read pointer. What is the normal safety effect?

02

Answer choices (4)