XC2V4000 Datasheet, PDF (83/311 Pages) Xilinx, Inc – Summary of Features

R
Virtex™-II Platform FPGAs: DC and Switching Characteristics
Table 43: Sample Window
Speed Grade
Description
Symbol
Device
–6
–5
–4
Units
Sampling Error at Receiver Pins⁽¹⁾
T_SAMP
XC2V40
TBD
500
TBD
ps
XC2V80
TBD
500
TBD
ps
XC2V250
TBD
500
TBD
ps
XC2V500
TBD
500
TBD
ps
XC2V1000
TBD
500
TBD
ps
XC2V1500
TBD
500
TBD
ps
XC2V2000
TBD
500
TBD
ps
XC2V3000
TBD
500
TBD
ps
XC2V4000
TBD
500
TBD
ps
XC2V6000
TBD
500
TBD
ps
XC2V8000
TBD
TBD
TBD
ps
Notes:
1. This parameter indicates the total sampling error of Virtex-II DDR input registers across voltage, temperature, and process. The
characterization methodology uses the DCM to capture the DDR input registers’ edges of operation. These measurements include:
- CLK0 and CLK180 DCM jitter
- Worst-case Duty-Cycle Distortion - T_{DCD_CLK180}
- DCM accuracy (phase offset)
- DCM phase shift resolution.
These measurements do not include package or clock tree skew.
Table 44: Pin-to-Pin Setup/Hold: Source-Synchronous Configuration
Speed Grade
Description
Symbol Device
–6
–5
–4
Data Input Set-Up and Hold Times Relative to a Forwarded
Clock Input Pin, Using DCM and Global Clock Buffer.
For situations where clock and data inputs conform to
different standards, adjust the setup and hold values
accordingly using the values shown in IOB Input Switching
Characteristics Standard Adjustments, page 11.
No Delay
Global Clock and IFF with DCM
T_PSDCM/
T_PHDCM
XC2V40
XC2V80
TBD
TBD
TBD
TBD
TBD
TBD
XC2V250
TBD
TBD
TBD
XC2V500
TBD
TBD
TBD
XC2V1000 TBD
0.2/0.5
TBD
XC2V1500 TBD
TBD
TBD
XC2V2000 TBD
TBD
TBD
XC2V3000 TBD
0.2/0.5
TBD
XC2V4000 TBD
TBD
TBD
XC2V6000 TBD
0.2/0.6
TBD
XC2V8000 TBD
TBD
TBD
Notes:
1. IFF = Input Flip-Flop
2. The timing values were measured using the fine-phase adjustment feature of the DCM.
3. The worst-case duty-cycle distortion and DCM jitter on CLK0 and CLK180 is included in these measurements.
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DS031-3 (v3.0) August 1, 2003
Product Specification
www.xilinx.com
1-800-255-7778
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