[linux-dvb] Re: budget-ci CI interface testing

[Andrew de Quincey <adq_dvb@lidskialf.net>]

On Tuesday 20 April 2004 01:04, Robert Schlabbach wrote:
> From: "Andrew de Quincey" <adq_dvb@lidskialf.net>
>
> > > I'll have to check that. I'd assumed that the CI interface would pass
> > > the data through if a CAM is not present (it's _supposed_ to; EN50221
> > > says so).
> > > Maybe thats incorrect for this hardware though. Or else I'm setting
> > > the passthrough bit wrongly.
> >
> > You're absolutely right; I just beeped that bit out again, and the CI
> > interface is dumber than I thought. You have to manually switch the
> > SAA7146 input ports when a CAM is removed. I'll work on that tomorrow.
>
> Umm, isn't that in line with EN50221?
>
> "On disconnection of the module, the host shall remove the module from the
> Transport Stream data path."

For some reason I read that to mean the host should automatically in hardware 
route the TS data path around the missing module so that interruption was 
minimised. Dunno why I thought that.


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