Re: How do I get rw-access to my flashes during high speed 75 MHZ??

Peter in Afrika wrote:
> I wanted to use a fast 75 Mhz clock for my tini (DS80C400). Therefore I 
> use the networkcamera design as a basic schematic.
> On Bank CE4- CE7 I wanted to put on each two AM29LV081-70EC (1Mx8Bit, 
> 70ns) Flashes for data storage purposes. If I want to have access to 
> that flashes after booting, how do I do that from JAVA?
> 
> Is the
> public void setStretchCycles(byte stretch) throws IllegalArgumentException
> public int getStretchCycles()
> 
> commands decribed in the tini-spec on page 189 the right command to do 
> set the delay? They only mentioned stretch cycles for the databus, but I 
> also need valid data for the address bus. Is this done by this command, 
> too. Or if not, what is the alternative way in getting access read and 
> write during high speed??

The stretch cycles stretch the read and write strobes which occur after 
the address lines have been set.  This allows slow memory devices time 
to propagate the input signals and output the data.  You can use the 
com.dalsemi.system.DataPort class to set the stretch cycles and 
read/write your data in the upper flash memories.

-- 
--
Bryan Armstrong
bryan.armstrong-6tN4nzCoH/[email protected]


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