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XAPP475 (v1.0) 2003 6 21 www.xilinx.co.jp 1
2003 Xilinx, Inc. All rights reserved. Xilinx http://www.xilinx.co.jp/legal.htm
: Xilinx Xilinx Xilinx
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
http://www.xilinx.co.jphttp:www.xilinx.com/legal.htmhttp://www.xilinx.co.jp/legal.htmhttp://www.xilinx.co.jp/legal.htmhttp://www.xilinx.co.jp/support/sw_ibis.htm
2 www.xilinx.co.jp XAPP475 (v1.0) 2003 6 21
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
http://www.xilinx.co.jphttp://www.xilinx.com/xlnx/xil_prodcat_product.jsp?ipoid=66136&sSecondaryNavPick=Design+Tools&sGlobalNavPick=PRODUCTShttp://www.eigroup.org/ibis/ibis.htmhttp://www.xilinx.co.jp/xlnx/xil_prodcat_product.jsp?title=si_simulationhttp://www.xilinx.co.jp/support/sw_ibis.htmhttp://www.xilinx.co.jp/xlnx/xil_prodcat_product.jsp?ipoid=66136&sSecondaryNavPick=Design+Tools&sGlobalNavPick=PRODUCTShttp://www.eigroup.org/ibis/ibis.htmhttp://www.eigroup.org/ibis/ibis.htmhttp://www.xilinx.co.jp/xlnx/xebiz/designResources/ip_product_details.jsp?key=dr_dt_spicemodels&iLanguageID=2 http://www.xilinx.co.jp/xlnx/xebiz/designResources/ip_product_details.jsp?key=dr_dt_spicemodels&iLanguageID=2
IBIS I/V dV/dt
XAPP475 (v1.0) 2003 6 21 www.xilinx.co.jp 3
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
http://www.xilinx.co.jp
4 www.xilinx.co.jp XAPP475 (v1.0) 2003 6 21
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
http://www.xilinx.co.jp
Spartan-3 FPGA IBIS SPICE IBIS IBIS IBIS IBIS I/V dV/dt Ramp dV/dt IBIS IBISWriter