EP3SE50F780I3N Altera, EP3SE50F780I3N Datasheet - Page 132

• Manufacturer Part Number: EP3SE50F780I3N
• Description: Stratix III
• Manufacturer: Altera

Operational Mode Descriptions
Figure 5–17. Four-Multiplier Adder Mode Shown for Half-DSP Block
5–32
Stratix III Device Handbook, Volume 1
dataa_0[ ]
datab_0[ ]
dataa_1[ ]
datab_1[ ]
dataa_2[ ]
datab_2[ ]
dataa_3[ ]
datab_3[ ]
Half-DSP Block
clock[3..0]
ena[3..0]
aclr[3..0]
The four-multiplier adder mode supports the round and saturation logic
unit. You can use the pipeline registers and output registers within the
DSP block to pipeline the multiplier-adder result, increasing the
performance of the DSP block.
+
+
output_saturate
output_round
signa
signb
+
overflow
Altera Corporation
October 2007
result[ ]