Re: Augh! WTF 'megabaud'?

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.

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

Cheers

PeteS

.

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