EP2S15 ALTERA [Altera Corporation], EP2S15 Datasheet - Page 54

• Manufacturer Part Number: EP2S15
• Description: Stratix II Device Family
• Manufacturer: ALTERA [Altera Corporation]

Digital Signal Processing Block
Figure 2–30. DSP Block Interface to Interconnect
2–46
Stratix II Device Handbook, Volume 1
C4 Interconnect
LAB
18
DSP Block to
LAB Row Interface
Block Interconnect Region
Direct Link Interconnect
from Adjacent LAB
36
16
A bus of 44 control signals feeds the entire DSP block. These signals
include clocks, asynchronous clears, clock enables, signed/unsigned
control signals, addition and subtraction control signals, rounding and
saturation control signals, and accumulator synchronous loads. The clock
signals are routed from LAB row clocks and are generated from specific
LAB rows at the DSP block interface.
Row Interface
36
12
Block
36 Inputs per Row
R4 Interconnect
16
Control
A[17..0]
B[17..0]
DSP Block
Row Structure
OA[17..0]
OB[17..0]
36 Outputs per Row
Direct Link Outputs
to Adjacent LABs
36
36
Altera Corporation
Direct Link Interconnect
from Adjacent LAB
May 2007
LAB