DS680 Datasheet, PDF (21/36 Pages) Xilinx, Inc – Space-Grade Virtex-4QV FPGAs

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Space-Grade Virtex-4QV FPGAs: DC and Switching Characteristics
CLB Switching Characteristics
Table 31: CLB Switching Characteristics
Symbol
Description
Speed Grade
-10
Units
Combinatorial Delays
T_ILO
T_IF5
T_IF5X
T_IF6Y
T_INAFX
T_INBFX
T_BXX
T_BYY
T_BXCY
T_BYCY
T_BYP
T_OPCYF
T_OPCYG
Sequential Delays
4-input function: F/G inputs to X/Y outputs
5-input function: F/G inputs to F5 output
5-input function: F/G inputs to X output
FXINA or FXINB inputs to YMUX output
FXINA input to FX output via MUXFX
FXINB input to FX output via MUXFX
BX input to XMUX output
BY input to YMUX output
BX input to C_OUT output – Getting into carry chain⁽²⁾
BY input to C_OUT output – Getting into carry chain⁽²⁾
C_IN input to C_OUT output – Carry chain delay⁽²⁾
F input to C_OUT output – Getting out from carry chain⁽²⁾
G input to C_OUT output – Getting out from carry chain⁽²⁾
0.20
0.46
0.57
0.39
0.27
0.26
0.76
0.56
0.78
0.63
0.09
0.58
0.57
ns, max
ns, max
ns, max
ns, max
ns, max
ns, max
ns, max
ns, max
ns, max
ns, max
ns, max
ns, max
ns, max
T_CKO
FF Clock CLK to XQ/YQ outputs
T_CKLO
Latch Clock CLK to XQ/YQ outputs
Setup and Hold Times of CLB Flip-Flops Before/After Clock CLK
0.36
ns, max
0.48
ns, max
T_DICK / T_CKDI
T_CECK / T_CKCE
T_FXCK / T_CKFX
T_SRCK / T_CKSR
T_CINCK / T_CKCIN
Set/Reset
BX/BY inputs
CE input
FXINA/FXINB inputs
SR/BY inputs (synchronous)
C_IN Data Inputs (DI) – Getting out from carry chain⁽²⁾
0.47/–0.09
0.75/–0.16
0.54/–0.14
1.35/–0.73
0.67/–0.23
ns, min
ns, min
ns, min
ns, min
ns, min
T_RPW
T_RQ
F_TOG
Minimum Pulse Width, SR/BY inputs
Delay from SR/BY inputs to XQ/YQ outputs (asynchronous)
Toggle Frequency (MHz) (for export control)
0.70
1.35
1028
ns, min
ns, max
MHz
Notes:
1. A zero “0” hold time listing indicates no hold time or a negative hold time. Negative values cannot be guaranteed “best-case,” but if a “0” is
listed, there is no positive hold time.
2. These items are of interest for carry chain applications.
DS680 (v2.0) April 12, 2010
www.xilinx.com
Product Specification
21