Morgan, thanks for sharing that! I've been using a couple of LTC2400s in
a PIC-based DAQ system that has been running about a year. In my case, I use
the External SCK/Single Cycle mode rather than the polling the EOC Bit. I
don't know what your requirements are but it's a lot easier to monitor EOC.
You simply do the following:

      - Set SCK Low.
      - Set /CS Low.
      - Wait for SDO to go Low.

   As far as timing, I'm using a 16F877 at 20MHz. Assuming EOC is complete
and SDO is Low, there is a 1us delay from the falling edge of /CS to the
rising edge of the first SCK pulse. The SCK pulse-pulse delay is 2us. This
was added during testing and I never tried to speed it up.

   - Tom

At 02:34 PM 11/4/00 +0100, Morgan Olsson wrote:
>This week we proved a stupid bug lurking in the SPI interface in the
>well-known LTC2400 analog to digital converter from Linear Technology.
>(tested chips produced week 41, 1998)
[Bug description snipped]


------------------------------------------------------------------------
Tom Handley
New Age Communications
Since '75 before "New Age" and no one around here is waiting for UFOs ;-)

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