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Prices for: Россия

* Цены могут быть изменены без уведомления. Указанные цены являются рекомендованными ценами производителя на условиях CIP, не включают налоговых и таможенных сборов.

Ключевые возможности и технические характеристики

The Channel Simulator Element contains:

  • Channel Simulator with Bit-by-bit and Statistical modes including support for the algorithmic modeling interface (AMI) flow in the industry-standard Input/output Buffer Information Specification (IBIS)
  • Eye Probe component that delivers eye diagram analysis including BER contour and bathtub display. Includes eye mask utility with automatic mask violation checking
  • Equalizer support with automatic tap optimization
  • Ability to check cross-talk with multiple aggressors each at different data rates
  • Correct treatment of jitter amplification

Описание

Chip-to-chip data links are found in almost all consumer and enterprise digital products produced today, from laptop computers to data center servers, telecommunication switching centers and Internet routers.

At lower speeds, SPICE allowed designers to perform simulations using lumped-element models. But at today’s multigigabit per second chip-to-chip data rates high-frequency and distributed effects such as impedance mismatch, reflections, crosstalk, skin effect, and dielectric loss come into play.

Accordingly, signal integrity engineers need to go beyond SPICE.Eye maskFigure 1. Channel Simulator, Statistical mode

Signal integrity engineers need to determine ultralow bit error rate (BER) contours for thousands of points in the design space in order to select the optimum set of characteristics for transmitter, channel, and receiver. Even with multicore and modern linear algebra, transient simulation still takes a prohibitively long time: more than a day for a million bits.

To meet this need, Channel Simulator has two new modes that eliminate the need for long, transient simulations. It takes advantage of the fact that the traces, vias, bond wires, connectors, etc. of the channel are linear and time invariant (“LTI”). This fact lets you avoid the brute force approach of running the transient solver at every time step. You can determine ultralow BER contours in seconds not days. This enables very rapid and complete ‘what if’ design space exploration.

The table below compares the pros and cons of traditional transient with Channel Simulator in Bit-by-bit and Statistical modes.

  Transient (SPICE-like) Simulator Channel Simulator, Bit-by-bit mode Channel Simulator, Statistical mode
Method Modified nodal analysis of Kirchoff’s current laws for every time step Bit-by-bit superposition of step responses Statistical calculations based on step response
Applicability Linear and non-linear channels Finite, user-specified bit pattern Adaptive or fixed equalizer taps LTI channels Finite, user-specified bit pattern Adaptive or fixed equalizer taps IBIS AMI LTI channels Stochastic props of infinite bit pattern Fixed equalizer taps IBIS AMI (uses a linear approximation for GetWave function if model provides one)
BER floor in one minute simulation ~10-3 ~10-6 ~10-16
Typical megabit simulation time 25 hours 12 minutes 40 seconds

Supported IBIS Keywords Table (myKeysight login required)

Dependencies (myKeysight login required)