EP1S40B956C5 Altera, EP1S40B956C5 Datasheet - Page 609
![IC STRATIX FPGA 40K LE 956-BGA](/photos/6/73/67334/544-stratix_956-bga_sml.jpg)
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: 609 of 864
- Download datasheet (11Mb)
Altera Corporation
September 2004
Implementing High Performance DSP Functions in Stratix & Stratix GX Devices
Polyphase Decimation Filter Implementation Results
Table 7–14
implementation in a Stratix device shown in
Polyphase Decimation Filter Design Example
Download the Decimation FIR Filter (decimation_fir.zip) design
example from the Design Examples section of the Altera web site at
www.altera.com.
Complex FIR Filter
A complex FIR filter takes real and imaginary input signals and performs
the filtering operation with real and imaginary filter coefficients. The
output also consists of real and imaginary signals. Therefore, a complex
FIR filter is similar to a regular FIR filter except for the fact that the input,
output, and coefficients are all complex numbers.
One example application of complex FIR filters is equalization. Consider
a Phase Shift Keying (PSK) system; a single complex channel can
represent the I and Q data channels. A FIR filter with complex coefficients
could then process both data channels simultaneously. The filter
coefficients are chosen in order to reverse the effects of intersymbol
interference (ISI) inherent in practical communication channels. This
operation is called equalization. Often, the filter is adaptive, i.e. the filter
coefficients can be varied as desired, to optimize performance with
varying channel characteristics.
A complex variable FIR filter is a cascade of complex multiplications
followed by a complex addition.
representation of a complex FIR filter. To compute the overall output of
the FIR filter, it is first necessary to determine the output of each complex
multiplier. This can be expressed as:
Note to
(1)
Part
Utilization
Performance
Table 7–14. Polyphase Decimation Filter Implementation Results
This refers to the performance of the DSP blocks, as well as the input clock rate.
The output rate is 60 MSPS (clocked out at 60MHz).
Table
shows the results of the polyphase decimation filter
7–14:
EP1S10F780
Lcell: 168/10570 (1%)
DSP Block 9-bit elements: 8/48 (17%)
Memory bits: 300/920448(<1%)
240 MHz
(1)
Figure 7–18
Stratix Device Handbook, Volume 2
Figure
shows a block diagram
7–17.
7–31
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