Re: Augh! WTF 'megabaud'?

On 7 Aug 2005 03:10:06 -0700, "PeteS" <ps@xxxxxxxxxxxxxxxxxxx> wrote:

>You may be getting caught in the TLA duplication zone.
>
>The SPI you want is the 'Serial Peripheral Interface', originally by
>Motorola (now either Freescale or OnSemi, depending on your parts).
>There's a useful tools called SPIGEN at
>http://www.freescale.com/files/soft_dev_tools/software/device_drivers/SPIGen.html
>
>I have never found the definitive specification and simply used the
>timing diagrams from the 68332 family.


I love the 68332; I'm hacking a big assembly program right now.


>
>There's a different 'SPI' physical layer that refers to the SPI-x
>System Packet level Interface (currently SPI4-2). You can read about
>that here:
>http://www.sistolic.com/sc1018.htm
>
>For SPI, (Mot style, anyway), you need MOSI (Master Out, Slave in),
>MISO, Clock.
>
>Some devices also need Frame / CS (the device becomes an active
>participant during frame active).
>
>Hope that helps


The only thing you can do when you use an SPI-claimed serial device is
read the data*** *very carefully*. Being lucky doesn't hurt, either.


John

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