EP1S40B956C5 Altera, EP1S40B956C5 Datasheet - Page 334
EP1S40B956C5
Manufacturer Part Number
EP1S40B956C5
Description
IC STRATIX FPGA 40K LE 956-BGA
Manufacturer
Altera
Series
Stratix®r
Datasheet
1.EP1S10F484I6N.pdf
(864 pages)
Specifications of EP1S40B956C5
Number Of Logic Elements/cells
41250
Number Of Labs/clbs
4125
Total Ram Bits
3423744
Number Of I /o
683
Voltage - Supply
1.425 V ~ 1.575 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
956-BGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Number Of Gates
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
EP1S40B956C5
Manufacturer:
ALTERA/阿尔特拉
Quantity:
20 000
- Current page: 334 of 864
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Enhanced PLLs
1–24
Stratix Device Handbook, Volume 2
The charge pump current directly affects the PLL bandwidth. The higher
the charge pump current, the higher the PLL bandwidth. You can choose
from a fixed set of values for the charge pump current.
the loop filter and the components that you can set via the Quartus II
software.
Figure 1–13. Loop Filter Programmable Components
Software Support
The Quartus II software provides two levels of programmable bandwidth
control. The first level allows you to enter a value for the desired
bandwidth directly into the Quartus II software using the MegaWizard
Plug-In Manager. Alternatively, you can set the bandwidth parameter in
the altpll function to the desired bandwidth. The Quartus II software
then chooses each individual bandwidth parameter to achieve the
desired setting. If designs cannot achieve the desired bandwidth setting,
the Quartus II software selects the closest achievable value. For preset
low, medium, and high bandwidth settings, the Quartus II software sets
the bandwidth as follows:
■
■
■
If you choose Auto bandwidth, the Quartus II software chooses the PLL
settings and you can get a bandwidth setting outside the 150-Khz to
2-Mhz range.
Low bandwidth is set at 150 KHz
Medium bandwidth is set at 800 KHz
High bandwidth is set at 2 Mhz
PFD
I
I
UP
DN
R
C
Figure 1–13
Altera Corporation
July 2005
shows
C
h
®
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