EP3SE50F780I3N Altera, EP3SE50F780I3N Datasheet - Page 125

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

Figure 5–13. Unsigned 54 × 54 Multiplier
Altera Corporation
October 2007
dataa[53..36]
datab[53..36]
dataa[35..18]
datab[53..36]
datab[53..36]
dataa[53..36]
datab[35..18]
dataa[53..36]
dataa[35..18]
datab[35..18]
datab[35..18]
dataa[35..18]
dataa[17..0]
datab[17..0]
dataa[17..0]
datab[17..0]
dataa[17..0]
datab[17..0]
Two-Multiplier Adder Sum Mode
In the two-multiplier adder configuration, the DSP block can implement
four 18-bit Two-Multiplier Adders (2 Two-Multiplier Adders per half
DSP block). You can configure the adders to take the sum or difference of
clock[3..0]
"0"
"0"
ena[3..0]
aclr[3..0]
Two Multiplier
Adder Mode
Double Mode
36 x 36 Mode
+
signa
signb
Unsigned 54 X 54 Multiplier
36
55
72
Stratix III Device Handbook, Volume 1
DSP Blocks in Stratix III Devices
108
result[ ]
5–25