ep1s25 Altera Corporation, ep1s25 Datasheet - Page 99

• Manufacturer Part Number: ep1s25
• Description: Stratix Device Family Data Sheet
• Manufacturer: Altera Corporation

Figure 2–50. Global & Regional Clock Connections from Side Pins & Fast PLL Outputs
Notes to
(1)
(2)
Altera Corporation
July 2005
FPLL7CLK
FPLL8CLK
CLK1
CLK2
CLK3
CLK0
PLLs 1 to 4 and 7 to 10 are fast PLLs. PLLs 5, 6, 11, and 12 are enhanced PLLs.
The global or regional clocks in a fast PLL’s quadrant can drive the fast PLL input. A 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
2–50:
PLL 7
PLL 1
PLL 2
PLL 8
g0
g0
g0
g0
l0
l1
l0
l1
l0
l1
l0
l1
2
Figure 2–50
and the CLK pins.
Figure 2–51
outputs and top CLK pins.
Regional
Clocks
shows the global and regional clocking from the PLL outputs
shows the global and regional clocking from enhanced PLL
Global
Clocks
Regional
Clocks
Stratix Device Handbook, Volume 1
2
l0
l1
g0
l0
l1
g0
l0
l1
g0
l0
l1
g0
PLL 10
PLL 4
PLL 3
PLL 9
Note
Stratix Architecture
(1),
(2)
FPLL10CLK
CLK10
CLK11
CLK8
CLK9
FPLL9CLK
2–85