EP4CE30F29C7N Datasheet, PDF (56/488 Pages) Altera Corporation – Cyclone IV Device Handbook, Volume 1

4–2
Chapter 4: Embedded Multipliers in Cyclone IV Devices
Architecture
Table 4–1 lists the number of embedded multipliers and the multiplier modes that can
be implemented in each Cyclone IV device.
Table 4–1. Number of Embedded Multipliers in Cyclone IV Devices
Device Family
Device
Embedded
Multipliers
9×9
Multipliers ⁽¹⁾
EP4CGX15
0
0
EP4CGX22
40
80
EP4CGX30
80
160
Cyclone IV GX
EP4CGX50
140
280
EP4CGX75
198
396
EP4CGX110
280
560
EP4CGX150
360
720
EP4CE6
15
30
EP4CE10
23
46
EP4CE15
56
112
EP4CE22
66
132
Cyclone IV E
EP4CE30
66
132
EP4CE40
116
232
EP4CE55
154
308
EP4CE75
200
400
EP4CE115
266
532
Note to Table 4–1:
(1) These columns show the number of 9 × 9 or 18 × 18 multipliers for each device.
18 × 18
Multipliers ⁽¹⁾
0
40
80
140
198
280
360
15
23
56
66
66
116
154
200
266
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
Cyclone IV Device Handbook,
Volume 1
February 2010 Altera Corporation