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EP4CE40 Datasheet(PDF) 56 Page - Altera Corporation

Part # EP4CE40
Description  Cyclone IV Device Handbook, Volume 1
PDF  488 Pages
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Manufacturer  ALTERA [Altera Corporation]
Direct Link  http://www.altera.com
Logo ALTERA - Altera Corporation

EP4CE40 Datasheet(HTML) 56 Page - Altera Corporation

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4–2
Chapter 4: Embedded Multipliers in Cyclone IV Devices
Architecture
Cyclone IV Device Handbook,
February 2010
Altera Corporation
Volume 1
Table 4–1 lists the number of embedded multipliers and the multiplier modes that can
be implemented in each Cyclone IV device.
In addition to the embedded multipliers in Cyclone IV devices, you can implement
soft multipliers by using the M9K memory blocks as look-up tables (LUTs). The LUTs
contain partial results from the multiplication of input data with coefficients that
implement variable depth and width high-performance soft multipliers for low-cost,
high-volume DSP applications. The availability of soft multipliers increases the
number of available multipliers in the device.
f For more information about M9K memory blocks, refer to the Memory Blocks in
Cyclone IV Devices chapter.
f For more information about soft multipliers, refer to AN 306: Implementing Multipliers
in FPGA Devices.
Architecture
Each embedded multiplier consists of the following elements:
■
Multiplier stage
■
Input and output registers
■
Input and output interfaces
Table 4–1. Number of Embedded Multipliers in Cyclone IV Devices
Device Family
Device
Embedded
Multipliers
9
× 9
Multipliers (1)
18
× 18
Multipliers (1)
Cyclone IV GX
EP4CGX15
0
0
0
EP4CGX22
40
80
40
EP4CGX30
80
160
80
EP4CGX50
140
280
140
EP4CGX75
198
396
198
EP4CGX110
280
560
280
EP4CGX150
360
720
360
Cyclone IV E
EP4CE6
15
30
15
EP4CE10
23
46
23
EP4CE15
56
112
56
EP4CE22
66
132
66
EP4CE30
66
132
66
EP4CE40
116
232
116
EP4CE55
154
308
154
EP4CE75
200
400
200
EP4CE115
266
532
266
Note to Table 4–1:
(1) These columns show the number of 9 × 9 or 18 × 18 multipliers for each device.



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