Chapter 7: ML561 Hardware-Simulation Correlation

R

Voltage (mV)

1800.0

1600.0

1400.0

1200.0

1000.0

800.0

600.0

400.0

200.0

0.000

Probe 6:U34.G33 (at die)

-200.0

1200.0

1600.0

2000.0

2400.0

2800.0

Time (ps)

UG199_c7_55_070907

300 MHz, Fast, PRBS6, 87% UI

Cursor 1: 801 mV, 2.7263 ns

Cursor 2: 697.0 mV, 1.2744 ns

Delta Voltage = 104.0 mV, Delta Time = 1.4519 ns (87% UI)

Figure 7-55:QDRII Read Extrapolation - Eye Scope Shot at Receiver IOB (Fast Corner)

 

1900.0

 

 

 

 

 

 

1700.0

 

 

 

 

 

 

1500.0

 

 

 

 

 

 

1300.0

 

 

 

 

 

(mV)

1100.0

 

 

 

 

 

 

 

 

 

 

 

Voltage

900.0

 

 

 

 

 

700.0

 

 

 

 

 

 

 

 

 

 

 

 

500.0

 

 

 

 

 

 

300.0

 

 

 

 

 

 

100.0

 

Probe 6:U34.G33 (at die)

 

 

 

-100.0

 

 

 

 

 

 

25.000

35.000

45.000

55.000

65.000

75.000

Time (ns)

UG199_c7_56_071007

Figure 7-56:QDRII Read Extrapolation - Waveform Scope Shot at Receiver IOB (Fast Corner)

90

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Virtex-5 FPGA ML561 User Guide

UG199 (v1.2) April 19, 2008

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Xilinx ML561 manual UG199c755070907