EP4SE360F35I4 Datasheet, PDF (108/432 Pages) Altera Corporation – This section provides a complete overview of all features relating to the Stratix IV device family, which is the most architecturlly advanced

4–28
Chapter 4: DSP Blocks in Stratix IV Devices
Stratix IV Operational Mode Descriptions
Figure 4–18. High-Precision Multiplier Adder Configuration
clock[3..0]
ena[3..0]
aclr[3..0]
signa
signb
dataA[0:17]
dataB[0:17]
dataA[0:17]
dataB[18:35]
dataC[0:17]
+
P0
<<18
+
dataD[0:17]
dataC[0:17]
+
P1
dataD[18:35]
<<18
Half-DSP Block
Note to Figure 4–18:
(1) Block output for accumulator overflow and saturate overflow.
overflow (1)
result[ ]
Stratix IV Device Handbook
Volume 1
February 2011 Altera Corporation