offset count and IU transfers

Day, Brian bday at lsil.com
Fri Aug 18 10:40:39 PDT 2000


* From the T10 Reflector (t10 at t10.org), posted by:
* "Day, Brian" <bday at lsil.com>
*
Sriram...

SPI-4 (rev 0) also says in section 14.1 in the last paragraph that the
target shall 
not start a new IU until the offset goes to zero except during data stream
IUs.

Brian


> -----Original Message-----
> From:	Sriram Srinivasan [SMTP:srirams at lsil.com]
> Sent:	Friday, August 18, 2000 10:33 AM
> To:	t10 at t10.org
> Subject:	offset count and IU transfers
> 
> * From the T10 Reflector (t10 at t10.org), posted by:
> * Sriram Srinivasan <srirams at lsil.com>
> *
>    SPI-4 (rev0) requires that the offset go to zero between SPI IUs in DT
> DATA 
> OUT phases (see last-but-one para. in 10.8.3.3.2) and nothing is mandated
> in the 
> other direction.  Whereas in data group transfers, the REQs for pad or
> pCRC 
> bytes cannot be sent for the current data group until ACKs have been
> received 
> for the pCRC bytes of the previous data group regardless of the direction
> of 
> data transfer (see 4) in 10.8.3.3.6 and 3rd para. in 10.8.3.3.7).  Why is
> this 
> different between IU transfers and data group transfers?
>    
>    Thanx,
>    Sriram
>    
> 
> *
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