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ProASIC3 DC and Switching Characteristics
2-76
Revision 13
DDR Module Specifications
Input DDR Module
Figure 2-19 Input DDR Timing Model
Table 2-101 Parameter Definitions
Parameter Name
Parameter Definition
Measuring Nodes (from, to)
tDDRICLKQ1
Clock-to-Out Out_QR
B, D
tDDRICLKQ2
Clock-to-Out Out_QF
B, E
tDDRISUD
Data Setup Time of DDR input
A, B
tDDRIHD
Data Hold Time of DDR input
A, B
tDDRICLR2Q1
Clear-to-Out Out_QR
C, D
tDDRICLR2Q2
Clear-to-Out Out_QF
C, E
tDDRIREMCLR
Clear Removal
C, B
tDDRIRECCLR
Clear Recovery
C, B
Input DDR
Data
CLK
CLKBUF
INBUF
Out_QF
(to core)
FF2
FF1
INBUF
CLR
DDR_IN
E
A
B
C
D
Out_QR
(to core)