淘宝官方店推荐课程在线工具联系方式关于我们

	微波射频仿真设计 Ansoft Designer 中文培训教程 \| HFSS视频培训教程套装
	Agilent ADS 视频培训教程 \| CST微波工作室视频教程 \| AWR Microwave Office

首页 >> Ansoft Designer >> Ansoft Designer在线帮助文档

Ansoft Designer / Ansys Designer 在线帮助文档：

Nexxim Simulator >
Nexxim Component Models >
Independent Sources >
AMI Source

AMI Source

Note

The AMI source is created via the AMI model import wizard. See IBIS AMI Model Support in the Nexxim topic.

AMI Source Netlist Format

An AMI source is required for IBIS Application Modeling Interface Analysis. Single-ended and differential versions are available.

The netlist syntax for the AMI Source is:

AAMISOURCExxxx n1 [n2] COMPONENT=AMI_SOURCE
+ LIBRARY='file-reference'
+ PARAMETERS_FILE='file-reference'
+ PROBE_NAME='name'
+ BITLIST=#bitlist
+ BITFILE='file-reference'
+ RANDOM_BIT_COUNT=val REPEAT_COUNT=val RANDOM_SEED=val
+ VLOW=val VHIGH=val TRISE=val TFALL=val
+ PHASE_DELAY=val
+ UI=val BPS=val
+ STEP_RESP_NUM_UI=val
+ DCD=val TXRJ=val TXPJ=val TXUJ=val
+ PRBS_NO=val
+ PRBS_SEED=val
+ PRBS_INVERT=val
+ PRBS_BITLENGTH=val
+ DO_ENCODING=val
+ HOLD_LAST_BIT=val
+ DELAY=val

n1 is the node connected to the single-ended source. n1 and n2 are the positive and negative nodes connected to the differential source. The differential AMI source must be connected between two signal lines. Neither node should be directly grounded. See Notes below for details. The entry COMPONENT=AMI_SOURCE is required.

**AMI Source Parameters**
Parameter	Description	Unit	Default
LIBRARY	AMI shared library file	None	None
PARAMETERS_FILE	AMI parameters file	None	None
PROBE_NAME	Name of the AMI probe that is the primary receiver on the channelwith this source (other AMI Sources and Probes are treated as crosstalk.)	None	None
BITLIST	Sequence of ones and zeros	None	None
BITFILE	File containing bit list	None	None
RANDOM_BIT_COUNT	Number of random bits to generate	None	0
REPEAT_COUNT	Number of times to repeat the random bit pattern. Total bits = (N+1)*RANDOM_BIT_COUNT	None	0
RANDOM_SEED	Seed for RANDOM_BIT_COUNT	None	None
VLOW	Logic low voltage level	Volt	0
VHIGH	Logic high voltage level	Volt	1
TRISE	Low-to-high rise time	Second	1e-10
TFALL	High-to-low fall time	Second	TRISE
BPS	Bit rate for the source	1/Second	None
UI	Duration of the unit interval. When both UI and BPS are given, UI is used.	Second	1e-9
DCD	Duty cycle distortion (Fraction of UI, 0 < DCD < 1)	None	0
TXRJ	Transmit Gaussian random jitter (standard deviation)	Second	0
TXPJ	Transmit periodic random jitter (amplitude)	Second	0
TXUJ	Transmit uniform random jitter (amplitude)	Second	0
PHASE_DELAY	Phase delay of the source	Second	0.0
STEP_RESP_NUM_UI	Number of unit intervals to run step response from	None
PRBS_NO	Size of pseudorandom bit pattern. May be any integer from 2 to 31. Nexxim randomly runs through all combinations of that many bits.	None
PRBS_SEED	Random seed for pseudorandom bit pattern	None	0
PRBS_INVERT	1=invert pseudorandom bit output, 0=no inversion	None	0
PRBS_BITLENGTH	Total number of PRBS bits to generate	None	2^PRBS_NO
HOLD_LAST_BIT	Controls behavior when end of bitstream occurs before simulaition ends 1=hold last bit of sequence 0=repeat sequence This control is added to REPEAT_BIT_COUNT to cover the case where this source is the aggressor and the victim source has a longer bit list than the aggressor’s.	None	0
DO_ENCODING	1=perform 8b10b encoding 0=no encoding	None	0
DELAY	Delay offset for transition	Second	0

AMI Source Netlist Example

AAMISOURCE3 Port1 Port2 COMPONENT=AMI_SOURCE
+ LIBRARY='AMI_library_1'
+ PARAMETERS_FILE='Project1_parameters'
+ BITLIST=#1010101010100000111110101010101000001111
+ REPEAT_COUNT=1000

To run examples of AMI analysis, see AMI Analysis Example in the Getting Started Guide.

Notes

1. The Single-Ended AMI source has the generalized internal structure below:

The internal voltage source amplitude is set by VHIGH and VLOW. The source is grounded internally.

2. The Differential AMI source has the generalized internal structure below:

Each of the two nodes is driven with half the voltage amplitude of the single-ended source and opposite polarity. The output is symmetrical in that the average of the two outputs is close to zero. The series resistance is also divided equally between the two nodes. Both sources are internally grounded.

3. The Single-Ended AMI source connects to a signal line. The line should not be directly grounded. The corresponding AMI probe should connect to the same signal line without any direct ground connection.

4. The Differential AMI source connects to two signal lines. Neither node should be grounded. The corresponding Differential AMI probe should connect to the same two signal lines without direct grounding.

HFSS视频教程 ADS视频教程 CST视频教程 Ansoft Designer 中文教程


Copyright © 2006 - 2013 微波EDA网, All Rights Reserved 业务联系：mweda@163.com