Xilinx ML561 manual UG199c749071107

Models: ML561

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R

Signal Integrity Correlation Results

UG199_c7_49_071107

Figure 7-49:QDRII Read HW Measurement - Eye Diagram Scope Shot at Probe Point (FPGA3 Via)

 

1800.0

 

 

 

 

 

1600.0

 

 

 

 

 

1400.0

 

 

 

 

 

1200.0

 

 

 

 

(mV)

1000.0

 

 

 

 

 

 

 

 

 

Voltage

800.0

 

 

 

 

600.0

 

 

 

 

 

 

 

 

 

 

400.0

 

 

 

 

 

200.0

 

 

 

 

 

0.000

 

 

Probe 3:C7.1 (at pin)

 

-200.0

 

 

 

 

 

800.0

1200.0

1600.0

2000.0

2400.0

Time (ps)

UG199_c7_50_070907

300 MHz, Slow, PRBS6, 59% UI

Cursor 1: 1.1007V, 1.4881 ns

Cursor 2: 1.0029V, 2.4719 ns

Delta Voltage = 97.9 mV, Delta Time = 983.8 ps (59% UI)

Figure 7-50:QDRII Read Correlation - Eye Diagram Scope Shot at Probe Point (Slow Corner)

Virtex-5 FPGA ML561 User Guide

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87

UG199 (v1.2) April 19, 2008

Page 87
Image 87
Xilinx ML561 manual UG199c749071107