EP1C3 ALTERA [Altera Corporation], EP1C3 Datasheet - Page 54

• Manufacturer Part Number: EP1C3
• Description: Cyclone FPGA Family
• Manufacturer: ALTERA [Altera Corporation]

Cyclone FPGA Family Data Sheet
Figure 34. DDR SDRAM & FCRAM Interfacing
54
PLL
OE
Phase Shifted -90 ˚
Register
OE LE
Register
OE LE
GND
V
CC
Output LE
Output LE
Figure 34
through the dedicated circuitry to the logic array.
Register
Register
Programmable
Delay Chain
clk
DQS
illustrates DDR SDRAM and FCRAM interfacing from the I/O
t
OE
Register
OE LE
Global Clock
Register
OE LE
DataA
DataB
Output LE
Output LE
Registers
Registers
-90˚ clk
DQ
Adjacent LAB LEs
Register
Register
LE
LE
Registers
Registers
Input LE
Input LE
Preliminary Information
Altera Corporation
Adjacent
LAB LEs
Resynchronizing
Global Clock