Spartan-3 FPGA 用の IBIS モデル

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IBIS (Input/Output Buffer Information Specification) I/O Spartan-3 IBIS http://www.xilinx.co.jp/support/sw_ibis.htm

I/O I/O I/O

DC I/O (IBIS ) IBIS RFI/EMI PCB I/O

SPICE IBIS

SPICE IC PCB

SPICE SPICE IC

SPICE SPICE SPICE

SPICE

: Spartan-3 FPGA

XAPP475 (v1.0) 2003 6 21

Spartan-3 FPGA IBIS R

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IBIS R

SPICE NDA () IBIS SPICE http://www.xilinx.co.jp/xlnx/xebiz/designResources/ip_product_details.jsp?key=dr_dt_spicemodels&iLanguageID=2

IBIS IBIS Intel SPICE IBIS IC EDA EIA/IBIS IBIS ANSI/EIA-656 IEC 62014-1 IBIS http://www.eigroup.org/ibis/ibis.htm

IBIS vs IBIS I/O IC

IBIS ( ) ( ) fast/strong slow/weak typical

IBIS ( ) IBIS SSO ( ) IBIS / SSO IBIS RLC 25 100ps 65

IBIS SPICE SPICE IBIS IBIS EDA IBIS IBIS IBIS 10% IBIS Cadence Avanti Corporation Hyperlynx Mentor MicrosimIntusoft Veribest Viewlogic IBIS http://www.xilinx.co.jp/xlnx/xil_prodcat_product.jsp?title=si_simulation

IBIS

IBIS IBIS http://www.xilinx.co.jp/support/sw_ibis.htm

IBIS 2 IBIS 1 IBIS

IBIS

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IBIS I/V dV/dt

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R

R/L/C

R/L/C

( )

( )

( )

I/V (/) :

dV/dt (50 )

IBIS I/V dV/dt

( ) IBIS I/V

IBIS I/V -VCC 2X VCC 2 I/V -VCC VCC I/V VCC 2X VCC

IBIS 3 () ( ) ( ) CMOS

IBIS 4 I/V

Low I/V CMOS 0V

High I/V (VCC)

( ) I/V CMOS 0V

( ) I/V (VCC)

Ramp dV/dt

Ramp / dV/dt (C_comp) C_comp

dV/dt CMOS ON OFF OFF ON 4 dV/dt

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IBIS R

dV/dt clock-to-out dV/dt dV/dt t=0

IBIS

IBIS RCL I/O IBIS 3.2 ( RCL ) IBIS 3.2

65 25 100ps RCL (IBIS ) 25ps 100ps I/O

IBISWriter Web IBIS I/O IBIS ISE IBISWriter IBIS IBISWriter I/O IBIS IBIS

IBIS

1. Project Navigator

2. [Processes for Source] [Implement Design] [Place & Route] [Generate IBISModel ] [Run] / IBIS

3.

06/21/03 1.0

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Spartan-3 FPGA IBIS SPICE IBIS IBIS IBIS IBIS I/V dV/dt Ramp dV/dt IBIS IBISWriter