Re: LITE5200B Powerfail

["John Rigby" <jcrigby@gmail.com>]

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According to the Lite5200B schematic
http://www.freescale.com/files/32bit/hardware_tools/schematics/lite5200BSCH.pdf

PSC2_4 is tied to a signal called PWR_DN_CTL_STS via a zero ohm resistor
R88.  If you want to use PSC2_4 as something else you probably need to
remove R88.

On 12/15/06, John Rigby <jcrigby@gmail.com> wrote:
>
> Have you looked at the Lite5200B schematic to see where the signals in
> question go?  Maybe you trying to drive something tied to ground high or
> vice-versa.
>
> On 12/15/06, Pedro Luis D. L. <carcadiz@hotmail.com> wrote:
> >
> > Hi all,
> >
> > I not pretty sure if this is the correct forum to ask for a solution but
> > I
> > know that some of you have worked on a driver to make PSCs in this board
> > work in an I2S mode.
> >
> > Have you ever have powerfail problems when writing the configuration
> > registers for this mode?
> >
> > I´ve delimited the problem:
> > - GPIO Port Config register stores without problems the value "111" in
> > bits
> > 25:27 (PSC2 to work in CODEC2 functionality with MCLK).
> > - When I write a "1" in PSC2->SICR register bit GenClk  to ensure that
> > clock
> > and FrameSync are generated internally from MCLK the systems suffers a
> > powerfail and I suppose that´s consecuence or some kind of shortcircuit.
> > I´ve followed the same steps made by Bob Peterson in
> > http://ozlabs.org/pipermail/linuxppc-embedded/2005-September/020210.html
> > to write the configuration in the proper registers but I still suffer
> > the
> > powerfail when GenClk is activated or, if I activate that bit first,
> > when
> > Port Config is written.
> > I´m also trying to understand how things are done in Roman Fietze driver
> > but
> > can´t find a difference. That makes me think that perhaps other
> > registers
> > must be modificated before driver loading. Meanwhile, I keep waiting for
> >
> > Grant Likely release, :-).
> > Has this happened to someone before?
> >
> > Thanks for your help.
> >
> >     Pedro.
> >
> > _________________________________________________________________
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> >
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>
>

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