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A simple solution: bit ordering on XSBI vs SFI-4

In a message dated 3/28/01 12:13:47 AM Pacific Standard Time,
dkabal@xxxxxxxxxxxxx writes:

logical service interface -> physical instantiation
tx_data-group<15:0> map to xsbi_tx<0:15>
rx_data-group<15:0> map to xsbi_rx<0:15>

Thus, the physical instantiation, and the physical instantiation only, will
have bits which have a name that matches the intended bit order. The service
interface will preserve Ethernet bit ordering in this proposed change. I
think this satisfies the original purpose behind the change proposed by
Justin and then alternately by me. This would only affect clause 51, and a
short explanation and diagram would show the mapping between the two,
differently named sixteen bits.


I spoke w/ Pat Thaler about all this off line and we are converging on a
Looks like the best way is to leave things as is with the addition of a
section in
my clause to map signal names between XSBI and SFI similar to your suggestion.
In fact, I like what you wrote. This is short and sweet and would highlight
this point
to any reader of the standard.

Justin Chang
Quake Technologies, Inc.
2880 Zanker Road, Suite 104
San Jose, CA 95134
Tel: 408-922-6888 x108
Fax: 408-922-6827
email: justin@xxxxxxxxxxxxx