ep1sgx25d Altera Corporation, ep1sgx25d Datasheet - Page 116

• Manufacturer Part Number: ep1sgx25d
• Description: Stratix Gx Device Family Data Sheet
• Manufacturer: Altera Corporation

Digital Signal Processing Block
Figure 4–29. DSP Block Diagram for 18
4–50
Stratix GX Device Handbook, Volume 1
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
D
ENA
D
D
ENA
ENA
D
ENA
ENA
ENA
D
ENA
CLRN
CLRN
CLRN
CLRN
CLRN
CLRN
CLRN
CLRN
Q
Q
Q
Q
Q
Q
Q
Q
Multiplier Stage
×
18-Bit Configuration
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
Summation
Output Selection
Multiplexer
to MultiTrack
Interconnect
Optional Output
Register Stage
Altera Corporation
February 2005