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Chapter 1: About the FIR Compiler
Performance and Resource Utilization
Table 1–5. FIR Compiler Performance—Cyclone III Devices (Part 2 of 2)
Memory (6)
1–7
Processing
Combinational
Logic
Multipliers
f max
Throughput
Equivalent
LUTs
Registers
Bits
M9K
(9x9)
(MHz)
(MSPS)
(GMACs) (1)
Parallel (LE), pipeline level 1 (2) , (3)
3,416
3,715
208
3
—
288
288
28
Parallel (M9K), pipeline level 1 (2) , (5)
1,948
2,155
120,030
48
—
283
283
27
Serial (M9K), pipeline level 1 (2) , (3)
327
462
14,167
8
—
323
36
3
Notes to Table 1–5 :
(1) GMAC = giga multiply accumulates per second (1 giga = 1,000 million).
(2) This FIR filter takes advantage of symmetric coefficients.
(3) Using EP3C10F256C6 devices.
(4) Using EP3C16F484C6 devices.
(5) Using EP3C40F780C6 devices.
(6) It may be possible to significantly reduce memory utilization by setting a lower target f MAX .
Table 1–6 shows performance figures for Stratix IV devices:
Table 1–6. FIR Compiler Performance—Stratix IV Devices
Memory
Processing
Combinational
Logic
Multipliers
f max
Throughput
Equivalent
ALUTs
Registers
Bits
(M9K)
ALUTs
(18x18)
(MHz)
(MSPS)
(GMACS) (1)
Multibit Serial, pipeline level 1 (2) , (3) , (4)
766
1,166
55,276
42
16
—
503
101
10
Multicycle variable (1 cycle) decimation by 4, pipeline level 1 (2) , (3)
336
844
1,400
16
28
14
443
443
43
Multicycle variable (1 cycle) interpolation by 4, pipeline level 2 (3)
200
1,274
64
—
8
24
372
372
36
Multicycle variable (1 cycle), pipeline level 2 (2) , (3)
741
1,936
148
1
8
48
443
443
43
Multicycle variable (4 cycle), pipeline level 2 (2) , (3)
717
1,398
796
6
36
14
323
81
8
Parallel (LE), pipeline level 1 (2) , (3)
2,153
2,672
157
1
8
—
421
421
41
Parallel (M9K), pipeline level 1 (3)
821
1,730
119,872
45
8
—
457
457
44
Serial (M9K), pipeline level 1 (2) , (3)
245
415
14,231
11
8
—
523
58
6
Notes to Table 1–6 :
(1) GMAC = giga multiply accumulates per second (1 giga = 1,000 million).
(2) This FIR filter takes advantage of symmetric coefficients.
(3) Using EP4SGX70DF29C2X devices.
(4) The data width is 16-bits and there are 4 serial units.
? May 2011
Altera Corporation
FIR Compiler User Guide
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