Lpc2000

Will this mean that we are not able
to make simple use of SPI-based serial data flash
for file storage and SPI based Ethernet MAC/PHY's
like the one coming up from microchip by simple
connecting these devices to the SPI bus adding
additional dedicated select pins from Port 0
of the LPC210x family.

I agree I don't know of any device that is just
8 Bit. SPI is a serial protocol and as such I should
be able to handle any word-length in a way.

Markus

Robert Adsett schrieb:

>At 12:03 AM 1/17/05 +0000, you wrote:
>
>
>  
>
>>>So do most SPI peripherals.
>>>Surely ... you just read and write multiples of 8 bits.
>>>      
>>>
>>Nope.  Just try it.  May work for some ADCs/DACs but certainly will
>>not work for all of them.  Multiple Writes may work, but I could
>>never get multiple Reads to work.  The interlocking nature of the
>>status flag logic seems to get confused.  Appears to be pretty much
>>limited to handling only 8 bit contiguous data.
>>    
>>
>
>I'm about to actually.  I don't know of any SPI peripheral (other than bare 
>logic gates) that uses single 8 bit values.
>
>You did note the SPI errata?
>
>  
>
>>If they changed this on the other CPU versions to handle 16b words,
>>well I guess that tells you right there that this SPI must only do 8b
>>data.
>>    
>>
>
>Not really.  If that was the case I don't think they would have kept the 
>original.
>
>I'll let you know what I find.
>
>Robert
>
>" 'Freedom' has no meaning of itself.  There are always restrictions,
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>
>                         Kelvin Throop, III
>
>
>
> 
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> 
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>  
>

-- 
Mit freundlichen Gr\ufffdssen
Markus Meng

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