Re: [partial-reconfig] Intro, and a few questions...

[Thomas Reinemann <Thomas.Reinemann@xxxxxxxxxxxxxxxxxxxxxxxxxx>]

Armando Astarloa schrieb:

> 
>> 
>> 
>> Against the background of part-reconf, you can't control the
>> tristate behaviour of the TBUFs really. Since the TBUF's tristate
>> control line is routed through the reconfigurable module, but
>> during reconfiguration the route may be broken. This results in
>> trashy signals on the tristate enable input, switching the TBUF
>> "randomly" between active and inactive.
> 
> 
> Hello Tom,
> 
> Ive a question about this:
> 
> If to connect an output of a dynamic part to a signal of the static
> section two TBUF are used (own prerouted macro), one TBUF placed into
>  the dynamic part and the other into the static part, is possible to
> control safely the state of one of the static part?. Although the
> state control of the tbuf of the dynamic part is not guaranteed, as
> the fixed section do not change it could be possible to "disconnect" 
> signals with unknown state during the reconfiguration stage, no?.

You can only disconnect a source but not the load of a long line, which 
is used for bus macros. If a load within the fixed part is driven via a 
bus macro from the reconf part you cannot ensure a known signal state 
during reconfiguration.

Bye Tom.
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