EP2C35U484I8N Altera, EP2C35U484I8N Datasheet - Page 34
EP2C35U484I8N
Manufacturer Part Number
EP2C35U484I8N
Description
IC CYCLONE II FPGA 33K 484-UBGA
Manufacturer
Altera
Series
Cyclone® IIr
Datasheet
1.EP2C5T144C8N.pdf
(168 pages)
Specifications of EP2C35U484I8N
Number Of Logic Elements/cells
33216
Number Of Labs/clbs
2076
Total Ram Bits
483840
Number Of I /o
322
Voltage - Supply
1.15 V ~ 1.25 V
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 100°C
Package / Case
484-UBGA
For Use With
P0301 - DE2 CALL FOR ACADEMIC PRICING544-1733 - PCI KIT W/CYCLONE II EP2C35N
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
Other names
544-2115
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Global Clock Network & Phase-Locked Loops
Figure 2–13. Clock Control Block
Notes to
(1)
(2)
(3)
(4)
2–22
Cyclone II Device Handbook, Volume 1
CLK[n + 3]
CLK[n + 2]
CLK[n + 1]
CLK[n]
The CLKSWITCH signal can either be set through the configuration file or it can be dynamically set when using the
manual PLL switchover feature. The output of the multiplexer is the input reference clock (f
The CLKSELECT[1..0] signals are fed by internal logic and can be used to dynamically select the clock source for
the global clock network when the device is in user mode.
The static clock select signals are set in the configuration file and cannot be dynamically controlled when the device
is in user mode.
Internal logic can be used to enabled or disabled the global clock network in user mode.
Figure
2–13:
inclk1
inclk0
Static Clock Select (3)
CLKSWITCH (1)
Of the sources listed, only two clock pins, two PLL clock outputs, one
DPCLK pin, and one internally-generated signal are chosen to drive into a
clock control block.
clock control block. Out of these six inputs, the two clock input pins and
two PLL outputs can be dynamic selected to feed a global clock network.
The clock control block supports static selection of DPCLK and the signal
from internal logic.
f
IN
PLL
Internal Logic
DPCLK or
CDPCLK
C0
C1
C2
Figure 2–13
(3)
CLKSELECT[1..0] (2)
shows a more detailed diagram of the
Clock Control Block
Static Clock
Select (3)
CLKENA (4)
IN
Enable/
Disable
Altera Corporation
) for the PLL.
February 2007
Global
Clock
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