SEL delay for training request

Keith Maloney kmaloney at
Thu Feb 8 09:03:30 PST 2001

* From the T10 Reflector (t10 at, posted by:
* Keith Maloney <kmaloney at>

T10 List,

    We are having a little trouble determining if there is a required
between when the target drives a DT phase and asserts the SEL signal
training for paced transfers.  From reading SPI-4 sections
and it is clear that there is a two system de-skew delay
requirement between
asserting SEL and the first assertion of REQ but no mention of a delay
asserting SEL.  The referenced sections, 10.13, 10.6.3 and 10.7.2, have
no clarification
on this either.

Keith Maloney

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