Kintex-7 FPGAs Data Sheet: DC and AC Switching Characteristics
GTX Transceiver Protocol Jitter Characteristics
For Table 61 through Table 66 , the 7 Series FPGAs GTX/GTH Transceivers User Guide ( UG476 ) contains recommended
settings for optimal usage of protocol specific characteristics.
Table 61: Gigabit Ethernet Protocol Characteristics
Description
Line Rate (Mb/s)
Min
Max
Units
Gigabit Ethernet Transmitter Jitter Generation
Total transmitter jitter (T_TJ)
1250
0.24
UI
Gigabit Ethernet Receiver High Frequency Jitter Tolerance
Total receiver jitter tolerance
1250
0.749
UI
Table 62: XAUI Protocol Characteristics
Description
Line Rate (Mb/s)
Min
Max
Units
XAUI Transmitter Jitter Generation
Total transmitter jitter (T_TJ)
3125
0.35
UI
XAUI Receiver High Frequency Jitter Tolerance
Total receiver jitter tolerance
3125
0.65
UI
Table 63: PCI Express Protocol Characteristics (1)
Standard
Description
Line Rate (Mb/s)
Min
Max
Units
PCI Express Transmitter Jitter Generation
PCI Express Gen 1
PCI Express Gen 2
PCI Express Gen 3 (2)
Total transmitter jitter
Total transmitter jitter
Total transmitter jitter uncorrelated
Deterministic transmitter jitter uncorrelated
2500
5000
8000
0.25
0.25
31.25
12
UI
UI
ps
ps
PCI Express Receiver High Frequency Jitter Tolerance
PCI Express Gen 1
PCI Express Gen 2 (3)
Total receiver jitter tolerance
Receiver inherent timing error
Receiver inherent deterministic timing error
0.03 MHz–1.0 MHz
2500
5000
0.65
0.40
0.30
1.00
UI
UI
UI
UI
PCI Express Gen
3 (2)
Receiver sinusoidal jitter
tolerance
1.0 MHz–10 MHz
8000
UI
10 MHz–100 MHz
0.10
UI
Notes:
1.
2.
3.
4.
Tested per card electromechanical (CEM) methodology.
PCI-SIG 3.0 certification and compliance test boards are currently not available.
Using common REFCLK.
Between 1 MHz and 10 MHz the minimum sinusoidal jitter roll-off with a slope of 20dB/decade.
DS182 (v2.8) March 4, 2014
Product Specification
54
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