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AM3874 GPMC_WAIT signal

Michi Yamamoto
Intellectual 610 points
Other Parts Discussed in Thread: AM3874

Hi,

I have two questions regarding GPMC_WAIT signal of AM3874.

Our customer may switch the mode of synchronous and asynchronous mode each chip select.

Please see the attached excel file. And please advise me.

Best regards,

Michi1440.qusetions-GPMC_WAIT.xlsx

 

  • 0
    TI__Prodigy 400 points

    Q1) Time between Wait signal de-assertion and assertion.

    >> There is no specific timing as such. But the timing requirements as specified by WaitMonitoring Time and

     Async wait time( 2 Cycles before data access), should be respected.

         In typical cases , the Wait signal is de-asserted few cycles before first access ( as per configuration of sync/Async

         access and WaitMonitoringTime)

    Q2) Wait signal toggle in Wait inactive period.

    >> This should not effect the GPMC WAIT functionality in anyway, bit this  is not advisable.

     

    Best regards,

    Chaitanya