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.
Zilog eZ80F91. Much more power and less hazzle.
Mit freundlichen Grüßen
Frank-Christian Krügel
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:
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
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