參數(shù)資料
型號: XC7K420T-3FFG1156C
廠商: XILINX INC
元件分類: FPGA
英文描述: FPGA, PBGA1156
封裝: LEAD FREE, FBGA-1156
文件頁數(shù): 2/50頁
文件大小: 1218K
代理商: XC7K420T-3FFG1156C
Kintex-7 FPGAs Data Sheet: DC and Switching Characteristics
DS182 (v1.1) April 1, 2011
Advance Product Specification
10
Integrated Interface Block for PCI Express Designs Switching Characteristics
More information and documentation on solutions for PCI Express designs can be found at:
http://www.xilinx.com/technology/protocols/pciexpress.htm
Table 17: GTX Transceiver Reference Clock Switching Characteristics
Symbol
Description
Conditions
All Speed Grades
Units
Min
Typ
Max
FGCLK
Reference clock frequency range
60
650
MHz
TRCLK
Reference clock rise time
20% – 80%
200
ps
TFCLK
Reference clock fall time
80% – 20%
200
ps
TDCREF
Reference clock duty cycle
Transceiver PLL only
40
50
60
%
TLOCK
Clock recovery frequency acquisition
time
Initial PLL lock
––
ms
TPHASE
Clock recovery phase acquisition time
Lock to data after PLL has locked
to the reference clock
––
s
X-Ref Target - Figure 3
Figure 3: Reference Clock Timing Parameters
Table 18: Maximum Performance for PCI Express Designs
Symbol
Description
Speed Grade
Units
-3
-2
-1
-1L
FPIPECLK
Pipe clock maximum frequency
250
MHz
FUSERCLK
User clock maximum frequency
500
250
MHz
FUSERCLK2
User clock 2 maximum frequency
250
MHz
FDRPCLK
DRP clock maximum frequency
250
MHz
ds182_03_021611
80%
20%
TFCLK
TRCLK
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