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IBIS Models Support in Eldo<br />

Example 4—Simultaneous Switching Output Noise<br />

Figure 17-22. Component Internal Connection<br />

Netlist Explanation<br />

_IO_comp<br />

+ file="tx_rx_pm.ibs"<br />

+ component="transceiver_pm"<br />

+ package=1<br />

The above lines instantiate an IBIS component. The component is named transceiver_pm and<br />

located in the tx_rx_pm.ibs IBIS file. Package=1 means that package parasitics provided in the<br />

IBIS file under [Package] keyword, where package pins are assumed uncoupled, will be used.<br />

vcc _IO_comp_4 0 3.3<br />

.connect _IO_comp_8 0<br />

Connects the power supply of the component. Note, the power supply should be connected<br />

manually when the component has a [Pin Mapping] keyword. A DC voltage source of 3.3V is<br />

connected to pin 4 of the component and pin 8 is connected to ground.<br />

vin1 _IO_comp_5 0 0<br />

vin2 _IO_comp_6 0 3.3<br />

.param VHI=3.3<br />

.param VLO =0.0<br />

.param TDELAYL=1n<br />

.param TRISE=0.1n<br />

.param TFALL=Trise<br />

.param TSAMPLE=5n<br />

vin3 _IO_comp_7 0 pattern VHI VLO TDELAYL TRISE TFALL TSAMPLE 0 1 1 0 R<br />

Defines the inputs of the component input buffers. Pin 5 is connected to 0 voltage, pin 6 is<br />

connected to a DC voltage of 3.3 V and pin 7 is connected to the stimulus of the system vin3. It<br />

Eldo® User's Manual, 15.3 797

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