On Friday, October 19, 2018 at 10:28:55 AM UTC+2, A. Dumas wrote:
> On 19-10-18 10:21, jack4747@gmail.com wrote:
> > On Friday, October 19, 2018 at 10:16:33 AM UTC+2, Andy Burns wrote:
> >> but how is the multimegabits/sec of transport stream pushed from
> >> the hat to the pi?
> >
> > SPI probably
>
> Yes, I read that in the comments somewhere; also given as (probable? not
> sure it was official) reason why no stacking of TV-HATs is possible:
> because there is only one SPI interface on the GPIO header.

In theory the PSI interface is "multi device", meaning you can have multiple
devices on the same bus. You only need to add SS (slave select) lines for every
device on the bus.
Said so, I suppose one TV-HAT will saturate the interface, so multiplexing is
not feasible.

Bye Jack

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