Altera FPGA
StrongFirst® timing solution for Altera® FP GA Stratix® V, Arria ® V, Cyclone® V Transceiver PCI Express
PCI Express ® (PCIe®) is a high-speed serial transmission widely adopted in PC, server, FA equipment’s, measurement equipment’s, broadcast products etc. FPGAs provide PCIe® transceivers for these applications. StrongFirst oscillators have been confirm ed as reference clock functionality by actual e valuations.
1. Connect StrongFirst oscillator to Altera Arria® V PCIe® board as reference clock.
2. Measure PCIe® TX output with oscilloscope.
3. Calculate BER with oscilloscope’s Eye Diagram and RMS data.
PCIe® TX oscillator measurement result, PCIe® Transmission performance
Evaluation result of 3 oscillators (SOCL7050, SOCP7050 , Other). SOCL7050 has the best performance.
BER (bit error rate )
Calculated by RMS jitter
|
Oscillator (100M z Reference Clock)
|
Other oscillator
|
SOCL7050
|
SOCP7050
|
PCIe G en.1 (2.5 Gb ps)
|
1.2 x 10-20
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1.3 x 10 -27
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7.5 x 10 -31 (Best)
|
PCIe G en.2 (5 Gb ps)
|
7.9 x 10-08
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4.5 x 10 -08
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2.6 x 10 -08 (Best)
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< PCIe® Gen.1 Data speed 2.5 Gbps>
RMS and Eye Pattern
Eye Diagram Jitter
RM S (Unit : ps)
|
Oscillator (100M Hz reference Clock)
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SOCL7050
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SOCP7050
|
Other oscillator
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(2nd PLL CDR)
|
5.56
|
4.92
|
6.11
|
BER (bit error rate) calculated with RMS.
BER (bit error rate)
Capitulated by RMS jitter
|
Oscillator (100M Hz reference Clock)
|
SOCL7050
|
SOCP7050
|
Other oscillator
|
(2nd PLL CDR)
|
1.3 x 10 -27
|
7.5x 10-31
|
1.2 x 10 -20
|
The timing period to the first error occasion. (Unit: sec).
< PCIe® Gen.2 Data speed 5 Gbps >
RMS and Eye Pattern
Eye Diagram Jitter
RM S (Unit : ps)
|
Oscillator (100M Hz reference Clock)
|
SOCL7050
|
SOCP7050
|
Other oscillator
|
(2nd PLL CDR)
|
5.29
|
5.19
|
5.39
|
BER (bit error rate) calculated with RMS.
BER (bit error rate)
Capitulated by RMS jitter
|
Oscillator (100M Hz reference Clock)
|
SOCL7050
|
SOCP7050
|
Other oscillator
|
(2nd PLL CDR)
|
4.5 x10 -08
|
2.6x 10-08
|
7.9 x 10 -08
|
The timing period to the first error occasion. (Unit: sec).
PCI Express, and PCIe are the registered trade marks of PCI-SIG.
Altera, Stratix, Arria, and Cyclone are the registered trade marks of Altera Corporation