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Virtex-5 FPGA ML561 User Guide www.xilinx.com 85
UG199 (v1.2) April 19, 2008
Signal Integrity Correlation Results
R
Figure 7-46: QDRII Write Extrapolation - Eye Scope Shot at Receiver IOB (Fast Corner)
800.0 1200.0 1600.0 2000.0 2400.0 2800.0
-1900.0
-1400.0
-900.0
-400.0
100.0
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2100.0
2600.0
3100.0
Time (ps)
Voltage (mV)
UG199_c7_46_070907
Probe 6:U35.G11 (at die)
♦ 300 MHz, Fast, PRBS6, 89% UI
♦ Cursor 1: 699.1 mV, 1.1440 ns
♦ Cursor 2: 801.0 mV, 2.6334 ns
♦ Delta Voltage = 101.9 mV, Delta Time = 1.4894 ns (89% UI)
Figure 7-47: QDRII Write Extrapolation - Waveform Scope Shot at Receiver IOB (Fast Corner)
110.000 120.000 130.000 140.000 150.000 160.000
-1600.0
-1100.0
-600.0
-100.0
400.0
900.0
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1900.0
2400.0
2900.0
3400.0
UG199_c7_47_070907
Time (ns)
Voltage (mV)
Probe 6:U35.G11 (at die)