All,
The logic of connecting supply interconnect models between package model
pad nodes and on-die model pad nodes is straightforward, and can be
described by discussing the following 6 cases:
Side A Side B
1. Pad_name pad_name
2. Pad_name bus_label
3. Pad_name signal_name
4. Bus_label bus_label
5. Bus_label signal_name
6. Signal_name signal_name
Note that the logic for the three cases exclude are handle by switching
the Side A and Side B conditions:
1. Bus_label pad_name
2. Signal_name bus_label
3. Signal_name signal_name
Side A Side B
1. Pad_name pad_name
a. Simple one to one mapping
2. Pad_name bus_label
a. All A Pad_names have a bus_label
b. Connect the terminal for each bus_label on B to the terminals on A
that have the same bus_label
3. Pad_name signal_name
a. All A Pad_names have a signal_name
b. Connect the terminal for each signal_name on B to the terminals on
A that have the same signal_name
4. Bus_label bus_label
a. Simple one to one mapping
5. Bus_label signal_name
a. All A Pad_names have a signal_name
b. Connect the terminal for each signal_name on B to the terminals on
A that have the same signal_name
6. Signal_name signal_name
a. Simple one to one mapping
This logic is self-evident, I do not think it is a requirement that is be
in the specification. If we decide to put this logic in the specification,
then this would have to be converted to English that is clear.
I point out that there is a requirement that there are one or more Side A
models that need to be able to map all of the supply terminals to one or
more Side B models. Model makers can create Side A and Side B models that
are easy to match and marry. Model makers can create Side A and Side B
models that can be extremely difficult (and sometimes impossible) to match
and marry. For example an impossible set of models:
Side A has one model that has pad names VDD1, VDD2, and VDD3
There are two Side B models:
1. Side B model 1 has pad names VDD1, VDD2
2. Side B model 2 has pad names VDD2, VDD3
I will be attending another standards meeting every Wednesday from 8:30 to
9:30, so either we find another time slot for the Wednesay interconnect
meeting or I will only be able to attend the first thirty minutes of each
meeting.
Walter
Walter Katz
<mailto:wkatz@xxxxxxxxxx> wkatz@xxxxxxxxxx
Phone 303.449-2308
Mobile 303.335-6156
