EP1SGX10CF672C7 Altera, EP1SGX10CF672C7 Datasheet - Page 157
![IC STRATIX GX FPGA 10KLE 672FBGA](/photos/6/72/67292/544-672-fbga_sml.jpg)
EP1SGX10CF672C7
Manufacturer Part Number
EP1SGX10CF672C7
Description
IC STRATIX GX FPGA 10KLE 672FBGA
Manufacturer
Altera
Series
Stratix® GXr
Datasheet
1.EP1SGX10CF672C7N.pdf
(272 pages)
Specifications of EP1SGX10CF672C7
Number Of Logic Elements/cells
10570
Number Of Labs/clbs
1057
Total Ram Bits
920448
Number Of I /o
362
Voltage - Supply
1.425 V ~ 1.575 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
672-FBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Number Of Gates
-
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Altera Corporation
February 2005
f
PLL typically provides 0.5% down spread modulation using a triangular
profile. The modulation frequency is programmable. Enabling spread
spectrum for a PLL affects all of its outputs.
Lock Detect
The lock output indicates that there is a stable clock output signal in
phase with the reference clock. Without any additional circuitry, the lock
signal may toggle as the PLL begins tracking the reference clock. You may
need to gate the lock signal for use as a system control. The lock signal
from the locked port can drive the logic array or an output pin.
Whenever the PLL loses lock for any reason (be it excessive inclk jitter,
clock switchover, PLL reconfiguration, power supply noise etc.), the PLL
must be reset with the areset signal for correct phase shift operation. If
the phase relationship between the input clock versus output clock, and
between different output clocks from the PLL is not important in the
design, then the PLL need not be reset.
See the Stratix GX FPGA Errata Sheet for more information on
implementing the gated lock signal in the design.
Programmable Duty Cycle
The programmable duty cycle allows enhanced PLLs to generate clock
outputs with a variable duty cycle. This feature is supported on each
enhanced PLL post-scale counter (g0..g3, l0..l3, e0..e3). The duty cycle
setting is achieved by a low and high time count setting for the post-scale
dividers. The Quartus II software uses the frequency input and the
required multiply or divide rate to determine the duty cycle choices.
Advanced Clear & Enable Control
There are several control signals for clearing and enabling PLLs and their
outputs. You can use these signals to control PLL resynchronization and
gate PLL output clocks for low-power applications.
The pllenable pin is a dedicated pin that enables/disables PLLs. When
the pllenable pin is low, the clock output ports are driven by GND and
all the PLLs go out of lock. When the pllenable pin goes high again, the
PLLs relock and resynchronize to the input clocks. You can choose which
PLLs are controlled by the pllenable signal by connecting the
pllenable input port of the altpll megafunction to the common
pllenable input pin.
Stratix GX Device Handbook, Volume 1
Stratix GX Architecture
4–91
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