
CY2SSTV857
.......................... Document #: 38-07464 Rev. *F Page 4 of 8
t
C(n+1)
Yx
t
C(n)
Figure 3. Cycle-to-cycle Jitter
PLL
FBIN
FBIN#
120
Ohm
120
Ohm
CLK
CLK#
DDR -
SDRAM
120
Ohm
VTR
VCP
0.3"
= 2.5"
= 0.6" (Split to Terminator)
DDR _SDRAM
represents a capacitive load
DDR -
SDRAM
FBOUT#
FBOUT
Output load capacitance for 2 DDR-SDRAM Loads: 5 pF< CL< 8 pF
Figure 4. Clock Structure # 1
CLK
CLK#
DDR-SDRAM
PLL
FBIN
FBIN#
120 Ohm
DDR-SDRAM
Stack
DDR-SDRAM
Stack
120 Ohm
VTR
VCP
0.3"
= 2.5"
= 0.6" (Split to Terminator)
DDR-SDRAM
represents a capacitive load
FBOUT#
FBOUT
DDR-SDRAM
Output load capacitancce for 4 DDR-SDRAM Loads: 10 pF < CL < 16 pF
Figure 5. Clock Structure # 1