Xilinx Virtex-5 FPGA ML561 - Manual (Page 87)

Virtex-5 FPGA ML561 User Guide www.xilinx.com 87
UG199 (v1.2.1) June 15, 2009
Signal Integrity Correlation Results R
Figure 7-49: QDRII Read HW Measurement - Eye Diagram Scope Shot at Probe Point (FPGA3 Via)
UG199_c7_49_071107
Figure 7-50: QDRII Read Correlation - Eye Diagram Scope Shot at Probe Point (Slow Corner)
800.0 1200.0 1600.0 2000.0 2400.0
-200.0
0.000
200.0
400.0
600.0
800.0
1000.0
1200.0
1400.0
1600.0
1800.0
Time (ps)
Voltage (mV)
UG199_c7_50_070907
Probe 3:C7.1 (at pin)
♦
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)