ep1s25 Altera Corporation, ep1s25 Datasheet - Page 69

• Manufacturer Part Number: ep1s25
• Description: Stratix Device Family Data Sheet
• Manufacturer: Altera Corporation

Figure 2–30. DSP Block Diagram for 18 × 18-Bit Configuration
Altera Corporation
July 2005
Optional Serial
Shift Register
Outputs to
Next DSP Block
in the Column
Optional Serial Shift Register
Inputs from Previous
DSP Block
D
D
ENA
D
ENA
D
ENA
D
ENA
D
ENA
D
ENA
D
ENA
ENA
CLRN
CLRN
CLRN
CLRN
CLRN
CLRN
CLRN
CLRN
Q
Q
Q
Q
Q
Q
Q
Q
Multiplier Stage
Optional Input Register
Stage with Parallel Input or
Shift Register Configuration
D
ENA
D
ENA
D
ENA
D
ENA
CLRN
CLRN
CLRN
CLRN
Q
Q
Q
Q
Optional Stage Configurable
as Accumulator or Dynamic
Adder/Subtractor
Optional Pipeline
Register Stage
Accumulator
Accumulator
Subtractor/
Subtractor/
Adder/
Adder/
1
2
Summation Stage
for Adding Four
Multipliers Together
Stratix Device Handbook, Volume 1
Summation
Output Selection
Multiplexer
to MultiTrack
Interconnect
Stratix Architecture
Optional Output
Register Stage
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