EP4CE40F29C8N Altera, EP4CE40F29C8N Datasheet - Page 60

• Manufacturer Part Number: EP4CE40F29C8N
• Description: IC CYCLONE IV FPGA 40K 780FBGA
• Manufacturer: Altera
• Series: CYCLONE® IV Er

Specifications of EP4CE40F29C8N

• Number Of Logic Elements/cells: 39600
• Number Of Labs/clbs: 2475
• Total Ram Bits: 1134000
• Number Of I /o: 532
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 780-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -

4–6
Figure 4–4. 9-Bit Multiplier Mode
Cyclone IV Device Handbook, Volume 1
Data A 0 [8..0]
Data A 1 [8..0]
Data B 0 [8..0]
Data B 1 [8..0]
Figure 4–4
multipliers.
All 9-bit multiplier inputs and results are independently sent through registers. The
multiplier inputs can accept signed integers, unsigned integers, or a combination of
both. Two 9 × 9 multipliers in the same embedded multiplier block share the same
signa and signb signal. Therefore, all the Data A inputs feeding the same
embedded multiplier must have the same sign representation. Similarly, all the
Data B inputs feeding the same embedded multiplier must have the same sign
representation.
shows the embedded multiplier configured to support two 9-bit
ENA
ENA
ENA
ENA
D
D
D
D
CLRN
CLRN
CLRN
CLRN
signa
signb
clock
Q
Q
Q
Q
ena
aclr
Embedded Multiplier
ENA
ENA
D
D
9 × 9 Multiplier
9 × 9 Multiplier
CLRN
CLRN
Q
Q
Chapter 4: Embedded Multipliers in Cyclone IV Devices
© February 2010 Altera Corporation
Data Out 0 [17..0]
Data Out 1 [17..0]
Operational Modes