EP3C16F256I7N Altera, EP3C16F256I7N Datasheet - Page 62

• Manufacturer Part Number: EP3C16F256I7N
• Description: Cyclone III
• Manufacturer: Altera

4–6
18-Bit Multipliers
Figure 4–3. 18-Bit Multiplier Mode
Cyclone III Device Handbook, Volume 1
Data A [17..0]
Data B [17..0]
You can configure each embedded multiplier to support a single 18 × 18 multiplier for
input widths of 10 to 18 bits.
Figure 4–3
All 18-bit multiplier inputs and results are independently sent through registers. The
multiplier inputs can accept signed integers, unsigned integers, or a combination of
both. Also, you can dynamically change the signa and signb signals and send these
signals through dedicated input registers.
shows the embedded multiplier configured to support an 18-bit multiplier.
ENA
ENA
D
D
CLRN
CLRN
signa
signb
clock
Q
Q
aclr
ena
Chapter 4: Embedded Multipliers in the Cyclone III Device Family
18 × 18 Multiplier
Embedded Multiplier
ENA
D
CLRN
Q
© December 2009 Altera Corporation
Data Out [35..0]
Operational Modes