Altera Stratix - Page 283

Altera Corporation 6–25
July 2005 Stratix Device Handbook, Volume 2
DSP Blocks in Stratix & Stratix GX Devices
Figure 6–14. Four-Multiplier Adder Mode
CLRN
D
Q
ENA
Data A
Data B
shiftinb
shiftina
aclr
clock
ena
signa
signb
CLRN
D
Q
ENA
CLRN
D
Q
ENA
CLRN
D
Q
ENA
Data A
Data B
CLRN
D
Q
ENA
CLRN
D
Q
ENA
Adder/
Subtractor
CLRN
D
Q
ENA
Data A
Data B
CLRN
D
Q
ENA
CLRN
D
Q
ENA
CLRN
D
Q
ENA
Data A
Data B
shiftoutb
shiftouta
CLRN
D
Q
ENA
CLRN
D
Q
ENA
Adder/
Subtractor
addnsub0
signa
signb
CLRN
D
Q
ENA
Data Out
addnsub1
Adder