ep2c35 Altera Corporation, ep2c35 Datasheet - Page 45

• Manufacturer Part Number: ep2c35
• Description: Cyclone Ii Device Family Data Sheet
• Manufacturer: Altera Corporation

Altera Corporation
February 2007
Note to
(1)
EP2C5
EP2C8
EP2C15
EP2C20
EP2C35
EP2C50
EP2C70
Table 2–10. Number of Embedded Multipliers in Cyclone II Devices
Each device has either the number of 9 × 9-, or 18 × 18-bit multipliers shown. The total number of multipliers for
each device is not the sum of all the multipliers.
Device
Table
2–10:
Multiplier Columns
Embedded
Embedded multipliers can operate at up to 250 MHz (for the fastest speed
grade) for 18 × 18 and 9 × 9 multiplications when using both input and
output registers.
Each Cyclone II device has one to three columns of embedded multipliers
that efficiently implement multiplication functions. An embedded
multiplier spans the height of one LAB row.
of embedded multipliers in each Cyclone II device and the multipliers
that can be implemented.
The embedded multiplier consists of the following elements:
■
■
■
Figure 2–18
1
1
1
1
1
2
3
Multiplier block
Input and output registers
Input and output interfaces
shows the multiplier block architecture.
Multipliers
Embedded
150
13
18
26
26
35
86
Cyclone II Device Handbook, Volume 1
9 × 9 Multipliers
Note (1)
172
300
26
36
52
52
70
Table 2–10
Cyclone II Architecture
shows the number
18 × 18 Multipliers
150
13
18
26
26
35
86
2–33