Fusion Family of Mixed Signal FPGAs
Revision 4
2-223
Timing Characteristics
Figure 2-143 Input DDR Timing Diagram
tDDRICLR2Q2
tDDRIREMCLR
tDDRIRECCLR
tDDRICLR2Q1
12
3
4
5
6
7
8
9
CLK
Data
CLR
Out_QR
Out_QF
tDDRICLKQ1
2
4
6
3
5
7
tDDRIHD
tDDRISUD
tDDRICLKQ2
Table 2-180 Input DDR Propagation Delays
Commercial Temperature Range Conditions: TJ = 70°C, Worst-Case VCC = 1.425 V
Parameter
Description
–2
–1
Std.
Units
tDDRICLKQ1
Clock-to-Out Out_QR for Input DDR
0.39
0.44
0.52
ns
tDDRICLKQ2
Clock-to-Out Out_QF for Input DDR
0.27
0.31
0.37
ns
tDDRISUD
Data Setup for Input DDR
0.28
0.32
0.38
ns
tDDRIHD
Data Hold for Input DDR
0.00
ns
tDDRICLR2Q1
Asynchronous Clear-to-Out Out_QR for Input DDR
0.57
0.65
0.76
ns
tDDRICLR2Q2
Asynchronous Clear-to-Out Out_QF for Input DDR
0.46
0.53
0.62
ns
tDDRIREMCLR Asynchronous Clear Removal Time for Input DDR
0.00
ns
tDDRIRECCLR
Asynchronous Clear Recovery Time for Input DDR
0.22
0.25
0.30
ns
tDDRIWCLR
Asynchronous Clear Minimum Pulse Width for Input DDR
0.22
0.25
0.30
ns
tDDRICKMPWH Clock Minimum Pulse Width High for Input DDR
0.36
0.41
0.48
ns
tDDRICKMPWL Clock Minimum Pulse Width Low for Input DDR
0.32
0.37
0.43
ns
FDDRIMAX
Maximum Frequency for Input DDR
1404
1232
1048
MHz
Note: For the derating values at specific junction temperature and voltage supply levels, refer to Table 3-7 on