eldo_user

IBIS Models Support in Eldo
IBIS Buffers
|
|**********************************************************
| Model Series1
|**********************************************************
|
[Model] Series1
Model_type Series1
|
| variable R(typ) R(min) R(max)
[R Series] 8ohm 6ohm 12ohm
|
| variable L(typ) L(min) L(max)
[L Series] 5nH NA NA
| variable R(typ) R(min) R(max)
[Rl Series] 4ohm NA NA
|
.
.
.
|
[End]
The preceding IBIS file example is referenced in the following netlist examples.
Netlist 1
_IO_input1_bymodel IN D_OUT1
+ file="dummy.ibs" model="Input_33"
+ device=input ! or device=1
The above netlist calls the buffer by its model name. It instantiates an input buffer
input1_bymodel and connects its analog input to node IN and its digital output to node
D_OUT1. The buffer description is in the IBIS file dummy.ibs located in the same directory as
the netlist. The buffer model, named Input_33, is picked up from the IBIS file.
Note that the component name is not specified; therefore Eldo will not add any package
parasitics to the buffer analog input pin. The corner is not specified, therefore the typical data
will be used for this buffer by default. The power keyword is not specified, therefore Eldo
connects the reference voltage sources to the buffer reference ports.
Netlist 2
_IO_input1_bypin IN D_OUT2 PC GC
+ file="dummy.ibs"
+ component="Test_Component" pin="2"
+ model_selector='MS_In=Input_50' ! equal to msel_mode=2
The above netlist calls the buffer by its pin name. It instantiates an input buffer input1_bypin
and connects its analog input to node IN and its digital output to node D_OUT2. The buffer
description is in the IBIS file dummy.ibs located in the same directory as the netlist. It belongs to
the component Test_Component. The buffer model, named MS_In (the one associated with pin
Eldo® User's Manual, 15.3 763