sfx_preset

Syntax

.option sfx_preset=value

Description

sfx_preset is a high-level simulator option that allows you to control the tradeoff between the simulation accuracy and performance. Possible values are baseax, basemx, baselx, basevx, ax, mx, lx, and vx. The value baseax provides the highest accuracy and the value vx provides the highest performance.

The baseax, basemx, baselx, and basevx values disable partitioning and provide SPICE-level accuracy while the ax, mx, lx, and vx values enable circuit partitioning and provide high performance, especially for large circuits.

The following table shows the effect of different values of the sfx_preset option on partitioning, speed, and optimization:

Example

.option sfx_preset=lx

.option sfx_preset=ax subckt=pll