Bidirectional transfers in SPI-4

Mark.Heath at Mark.Heath at
Mon Oct 23 07:04:12 PDT 2000

* From the T10 Reflector (t10 at, posted by:
* Mark.Heath at
Bill Galloway wrote:

> I can not find it in spi-4 right now but all commands were supposed to be
> blown away if you change the IU_REQ bit.  If you sent the command out with a
> command IU and drop out of packetized then the target cannot describe the
> 16-bit tag and 64-bit lun on the reconnection.

It certainly makes sense that this is how things ought to work, but I too
am uable to find this "abort all tasks on IU_REQ change" requirement
described in either SPI-3 or SPI-4.  Can someone point me to the correct
place in the standard?


Mark Heath
Seagate Technology

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