EP2C70F672I8N Altera, EP2C70F672I8N Datasheet - Page 46

• Manufacturer Part Number: EP2C70F672I8N
• Description: IC CYCLONE II FPGA 70K 672-FBGA
• Manufacturer: Altera
• Series: Cyclone® IIr

Specifications of EP2C70F672I8N

• Number Of Logic Elements/cells: 68416
• Number Of Labs/clbs: 4276
• Total Ram Bits: 1152000
• Number Of I /o: 422
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 672-FBGA
• Family Name: Cyclone® II
• Number Of Logic Blocks/elements: 68416
• # I/os (max): 422
• Frequency (max): 402.58MHz
• Process Technology: 90nm
• Operating Supply Voltage (typ): 1.2V
• Logic Cells: 68416
• Ram Bits: 1152000
• Operating Supply Voltage (min): 1.15V
• Operating Supply Voltage (max): 1.25V
• Operating Temp Range: -40C to 100C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 672
• Package Type: FBGA
• For Use With: P0304 - DE2-70 CALL FOR ACADEMIC PRICING544-1703 - VIDEO KIT W/CYCLONE II EP2C70N544-1699 - DSP KIT W/CYCLONE II EPS2C70N
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -
• Lead Free Status / Rohs Status: Compliant
• Other names: 544-2143

Embedded Multipliers
Figure 2–18. Multiplier Block Architecture
Note to
(1)
2–34
Cyclone II Device Handbook, Volume 1
If necessary, these signals can be registered once to match the data signal path.
Figure
2–18:
Data A
Data B
Each multiplier operand can be a unique signed or unsigned number.
Two signals, signa and signb, control the representation of each
operand respectively. A logic 1 value on the signa signal indicates that
data A is a signed number while a logic 0 value indicates an unsigned
number.
various operand sign representations. The result of the multiplication is
signed if any one of the operands is a signed value.
Unsigned
Unsigned
Signed
Signed
Table 2–11. Multiplier Sign Representation
Data A (signa Value)
ENA
ENA
D
D
CLRN
CLRN
signa (1)
signb (1)
clock
Q
Q
Table 2–11
ena
aclr
Register
Input
shows the sign of the multiplication result for the
Embedded Multiplier Block
Unsigned
Signed
Unsigned
Signed
Data B (signb Value)
ENA
D
CLRN
Register
Output
Q
Unsigned
Signed
Signed
Signed
Data Out
Altera Corporation
Result
February 2007