ep2sgx30c Altera Corporation, ep2sgx30c Datasheet - Page 109

• Manufacturer Part Number: ep2sgx30c
• Description: Stratix Ii Gx Device Data Sheet
• Manufacturer: Altera Corporation

Figure 2–71. Global and Regional Clock Connections from Center Clock Pins and Fast PLL Outputs
(2)
Notes to
(1)
(2)
Altera Corporation
October 2007
CLK0
CLK1
CLK2
CLK3
EP2SGX30C/D and P2SGX60C/D devices only have two fast PLLs (1 and 2) and two Enhanced PLLs (5 and 6), but
the connectivity from these PLLs to the global and regional clock networks remains the same as shown.
The global or regional clocks in a fast PLL’s quadrant can drive the fast PLL input. A dedicated clock input pin or
other PLL must drive the global or regional source. The source cannot be driven by internally generated logic before
driving the fast PLL.
Figure
2–71:
PLL 1
PLL 2
Fast
Fast
C0
C1
C2
C3
C0
C1
C2
C3
RCLK0
RCLK1
RCLK2
RCLK3
RCLK4
RCLK5
RCLK6
RCLK7
Stratix II GX Device Handbook, Volume 1
GCLK0
GCLK1
Stratix II GX Architecture
GCLK2
GCLK3
Notes
Signal Input
Logic Array
To Clock
Network
2–101
(1),