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ICS9248-135

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SDRAM_STOP# Timing Diagram

Notes:

1. All timing is referenced to the internal CPU clock.

2. SDRAM is an asynchronous input and metastable conditions may exist. This signal is synchronized to the

SDRAM clocks inside the ICS9248-135.

3. All other clocks continue to run undisturbed.

SDRAM_STOP# is an asychronous input to the clock synthesizer. It is used to stop SDRAM clocks for low power operation.

SDRAM_STOP# is synchronized to complete it's current cycle, by the ICS9248-135. All other clocks will continue to run

while the SDRAM clocks are disabled. The SDRAM clocks will always be stopped in a low state and start in such a manner

that guarantees the high pulse width is a full pulse.