Altera Stratix - Architecture

Altera Corporation 6–5
July 2005 Stratix Device Handbook, Volume 2
DSP Blocks in Stratix & Stratix GX Devices
Architecture
The DSP block consists of the following elements:
■ A multiplier block
■ An adder/subtractor/accumulator block
■ A summation block
■ An output interface
■ Output registers
■ Routing and control signals
Multiplier Block
Each multiplier block has input registers, a multiplier stage, and a
pipeline register. See Figure 6–3.
Figure 6–3. Multiplier Block Architecture
CLRN
D
Q
ENA
Data A
Data B
Data Out
to Adder
Blocks
shiftoutb shiftouta
shiftina
shiftinb
aclr[3..0]
clock[3..0]
ena[3..0]
signa
signb
CLRN
D Q
ENA
CLRN
D
Q
ENA