CS8900 question

In our new project we want to use cs8900 in the 8bit mode with a 16bit 
uC (infineon C166).

We would like to use this chip, because this is on the Keil Eval board 
and widely used.

Now I am reading the chip has some issues. The interrupt stops suddenly. 
And that there are some workarounds.

So is there a reliable driver library for this chip?
Should I better use an other? Which?

Any comments?

Adib.
---

On Tue, 26 Sep 2006 23:39:20 +0200, Adib Taraben
<taraben.a@st-innovation.com> wrote:

>In our new project we want to use cs8900 in the 8bit mode with a 16bit 
>uC (infineon C166).
>
>We would like to use this chip, because this is on the Keil Eval board 
>and widely used.
>
>Now I am reading the chip has some issues. The interrupt stops suddenly. 
>And that there are some workarounds.
>
>So is there a reliable driver library for this chip?
>Should I better use an other? Which?

Zilog eZ80F91. Much more power and less hazzle.

Mit freundlichen Gr&#4294967295;&#4294967295;en

Frank-Christian Kr&#4294967295;gel

On Tue, 26 Sep 2006 23:39:20 +0200, Adib Taraben
<taraben.a@st-innovation.com> wrote:

>In our new project we want to use cs8900 in the 8bit mode with a 16bit 
>uC (infineon C166).
>
>We would like to use this chip, because this is on the Keil Eval board 
>and widely used.
>
>Now I am reading the chip has some issues. The interrupt stops suddenly. 
>And that there are some workarounds.
>
>So is there a reliable driver library for this chip?
>Should I better use an other? Which?
>
>Any comments?
>
>Adib.

From what I know, the issue with lost interrupts applies only to 8 bit
mode of operation. You either poll the chip in a loop, or then switch
to using 16 bit mode of operation. Apart from this I would not be
aware of any other issues. Actually I'm using this chip in 16 bit mode
in one of my designs using a renesas M16C which is quite similar to
the C166 you use so doing this seems feasable to me.

To get an idea of how to use the chip I recommend takeing a close look
at the slaa137 application note from TI. You find it here:

http://focus.ti.com/docs/apps/catalog/resources/appnoteabstract.jhtml?abstractName=slaa137a

If memory serves, the app note uses the chip in 8 bit mode but apart
from this said app note should give you a quick start into the topic.

I also found the datasheet and some aditionally available information
from crystal quite instructive :-)

HTH

Markus