参数资料
型号: IP-FFT
厂商: Altera
文件页数: 20/70页
文件大小: 0K
描述: IP FFT/IFFT
标准包装: 1
系列: *
类型: MegaCore
功能: 快速傅里叶变换处理器
许可证: 初始许可证
1–16
Chapter 1: About This MegaCore Function
Performance and Resource Utilization
Table 1–25 lists performance with buffered burst data flow architecture, using the
4 multipliers/2 adders complex multiplier structure, for data and twiddle width 16,
for Stratix V (5SGXEA7H3F35C2) devices.
Table 1–24. Performance with the Buffered Burst Data Flow Architecture—Stratix V Devices
Transform Calculation
Data Load & Transform
Block Throughput
Points
Number of
Engines (1)
f MAX (MHz)
Time (2)
Cycles Time ( ? s)
Calculation
Cycles Time ( ? s)
Cycles
Time ( ? s)
256
1024
4096
256
1024
4096
256
1024
4096
1
1
1
2
2
2
4
4
4
430
403
402
380
379
366
337
348
312
235
1,069
5,167
162
557
2,607
118
340
1,378
0.55
2.65
12.86
0.43
1.47
7.13
0.35
0.98
4.42
491
2,093
9,263
397
1,581
6,703
347
1,364
5,474
1.14
5.19
23.06
1.05
4.17
18.33
1.03
3.92
17.54
331
1,291
6,157
299
1,163
5,133
283
1,099
4,633
0.77
3.2
15.32
0.79
3.07
14.04
0.84
3.16
14.84
Notes to Table 1–25 :
(1) When using the buffered burst architecture, you can specify the number of quad-output engines in the FFT parameter editor. You may choose
from one, two, or four quad-output engines in parallel.
(2) In a buffered burst data flow architecture, transform time is defined as the time from when the N-sample input block is loaded until the first
output sample is ready for output. Transform time does not include the additional N-1 clock cycle to unload the full output data block.
(3) Block throughput is the minimum number of cycles between two successive start-of-packet (sink_sop) pulses.
Table 1–26 lists resource usage with burst data flow architecture, using the
4 multipliers/2 adders complex multiplier structure, for data and twiddle width 16,
for Stratix V (5SGXEA7H3F35C2) devices.
Table 1–25. Resource Usage with the Burst Data Flow Architecture—Stratix V Devices
(Part 1 of 2)
Points
256
1024
4096
256
1024
4096
256
1024
4096
256
1024
4096
256
1024
Engine
Architecture
Quad Output
Quad Output
Quad Output
Quad Output
Quad Output
Quad Output
Quad Output
Quad Output
Quad Output
Single Output
Single Output
Single Output
Single Output
Single Output
Number of
Engines (2)
1
1
1
2
2
2
4
4
4
1
1
1
2
2
Combinational
ALUTs
1,801
1,833
1,878
2,970
3,019
3,048
5,164
5,216
5,280
709
751
817
1,037
1,052
Logic
Registers
3,717
3,912
4,078
5,914
6,129
6,319
10,743
10,924
11,129
1,542
1,598
1,637
2,521
2,622
Memory
(Bits)
14,592
57,600
229,632
14,592
57,600
229,632
14,592
57,600
229,632
9,472
37,120
147,712
14,592
57,600
Memory
(M20K)
8
8
14
14
14
14
27
27
27
3
4
9
8
8
DSP
Blocks
6
6
6
12
12
12
24
24
24
2
2
2
4
4
f MAX
(MHz)
414
405
395
385
395
374
353
314
346
445
443
427
401
443
FFT MegaCore Function
User Guide
November 2013 Altera Corporation
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