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Virtex-5 FPGA ML561 User Guide www.xilinx.com 69
UG199 (v1.2) April 19, 2008
Signal Integrity Correlation Results
R
Figure 7-19: DDR2 Component Read Extrapolation - Eye Scope Shot at Receiver IOB (Fast Corner)
800.0 1200.0 1600.0 2000.0 2400.0 2800.0
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UG199_c7_19_071007
Time (ps)
Voltage (mV)
Probe 1:U7.P25 (at die)
♦ 333 MHz, Fast, PRBS6, 88% UI
♦ Cursor 1: 701.2 mV, 1.0772 ns
♦ Cursor 2: 774.6 mV, 2.3980 ns
♦ Delta Voltage = 73.4 mV, Delta Time = 1.3208 ns (88% UI)
Figure 7-20: DDR2 Component Read Extrapolation - Waveform Scope Shot at Receiver IOB (Fast Corner)
65.000 75.000 85.000 95.000 105.000
-100.0
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UG199_c7_20_071007
Time (ns)
Voltage (mV)
Probe 1:U7.P25 (at die)