[ibis-macro] August 30 Minutes
- From: "Mike LaBonte (milabont)" <milabont@xxxxxxxxx>
- To: <ibis-macro@xxxxxxxxxxxxx>
- Date: Wed, 31 Aug 2005 09:18:17 -0400
meeting date: 30 aug 2005
attending: Arpad Muranyi, Todd Westerhoff, Ian Dodd, Bob Ross, Barry
Katz,
Ken Willis, Sam Chitwood, Mike LaBonte
-------------
AR: Ian to continue researching receiver architectures and come up with
a generic template
- Verbally sketched out, details TBD
AR: Arpad to post a note to the reflector to continue this discussion
- Done, but not much discussion.
AR: Todd/Mike to propose paper for IBIS Summit and develop presentation
-------------
Passing parameters:
- Ian: Arpad not using AMS the way it was intended.
- Something about steam engines...
- Parameters are for initialization only, ports are for runtime.
- Arpad: Voltage on a port can be converted to resistance value ...
- Todd: do we want ports to declare types like 'resistance'?
- No, all ports will be 'electrical'
Latest library from Arpad:
- C is charge conserving; changing C changes V
- L is flux conserving; changing L changes I
- If we want PWL VCVS, etc. we need to clone a template for each
instance.
- Table data can be pasted directly into the clone instead of using an
external file.
- Should we have add and multiply modules? yes
- How many inputs?
- Use port arrays?
- No, implement 1-3 inputs, fixed
- Use Scale param for both, can't be changed on the fly.
- Adder only scales 2nd port
- multiply multiplies and scales both
- Divider? yes
- Polynomial module? may be more complicated than we need
- Could have coefficient and exponent params to make it replace adder,
multiplier, and divider. Nah.
- Philosophy is to have simple module, even if we end up with more of
them.
- Ideal T-line? yes
- delay param or length and Tpd? delay
- s-param?
- make it a future enhancement
- AMS languages don't have it
- IBIS buffers
- series models?
- AMS multi-dimensional table could implement series mosfet
- AMS interpolates, can other simulators
Any other modules needed?
- triggerable input?
- PWL has it
- May not be supported by all simulators
- We'll put it off for now
- We should add new ones only as they are needed for new templates
- Can Cadence contribute more templates?
- Need a website for people to share modules
- Need to version number library files
Arpad needs help annotating the modules
AR: Mike will annotate one module, get comments, do the rest
AR: Todd and Mike start presentation
AR: Ken find out if cadence can contribute another template
-------------
Next meeting: Tuesday September 6, 2005.
meeting date: 30 aug 2005
attending: Arpad Muranyi, Todd Westerhoff, Ian Dodd, Bob Ross, Barry Katz,
Ken Willis, Sam Chitwood, Mike LaBonte
-------------
AR: Ian to continue researching receiver architectures and come up with a
generic template
- Verbally sketched out, details TBD
AR: Arpad to post a note to the reflector to continue this discussion
- Done, but not much discussion.
AR: Todd/Mike to propose paper for IBIS Summit and develop presentation
-------------
Passing parameters:
- Ian: Arpad not using AMS the way it was intended.
- Something about steam engines...
- Parameters are for initialization only, ports are for runtime.
- Arpad: Voltage on a port can be converted to resistance value ...
- Todd: do we want ports to declare types like 'resistance'?
- No, all ports will be 'electrical'
Latest library from Arpad:
- C is charge conserving; changing C changes V
- L is flux conserving; changing L changes I
- If we want PWL VCVS, etc. we need to clone a template for each instance.
- Table data can be pasted directly into the clone instead of using an
external file.
- Should we have add and multiply modules? yes
- How many inputs?
- Use port arrays?
- No, implement 1-3 inputs, fixed
- Use Scale param for both, can't be changed on the fly.
- Adder only scales 2nd port
- multiply multiplies and scales both
- Divider? yes
- Polynomial module? may be more complicated than we need
- Could have coefficient and exponent params to make it replace adder,
multiplier, and divider. Nah.
- Philosophy is to have simple module, even if we end up with more of them.
- Ideal T-line? yes
- delay param or length and Tpd? delay
- s-param?
- make it a future enhancement
- AMS languages don't have it
- IBIS buffers
- series models?
- AMS multi-dimensional table could implement series mosfet
- AMS interpolates, can other simulators
Any other modules needed?
- triggerable input?
- PWL has it
- May not be supported by all simulators
- We'll put it off for now
- We should add new ones only as they are needed for new templates
- Can Cadence contribute more templates?
- Need a website for people to share modules
- Need to version number library files
Arpad needs help annotating the modules
AR: Mike will annotate one module, get comments, do the rest
AR: Todd and Mike start presentation
AR: Ken find out if cadence can contribute another template
-------------
Next meeting: Tuesday September 6, 2005.
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