EPF10K10ATC144-3 Datasheet, PDF (19/128 Pages) Altera Corporation – Embedded Programmable Logic Device Family

FLEX 10K Embedded Programmable Logic Device Family Data Sheet
Figure 9. FLEX 10K LE Operating Modes
Normal Mode
Carry-In
Cascade-In (1)
data1
data2
data3
4-Input
LUT
data4
Arithmetic Mode
Carry-In
Cascade-Out
Cascade-In
PRN
DQ
ENA
CLRN
data1
data2
3-Input
LUT
3-Input
LUT
Carry-Out
Up/Down Counter Mode
Carry-In
PRN
DQ
ENA
CLRN
Cascade-Out
Cascade-In
LE-Out to FastTrack
Interconnect
LE-Out to Local
Interconnect
LE-Out
data1 (ena)
data2 (u/d)
data3 (data)
data4 (nload)
3-Input
LUT
3-Input
LUT
PRN
1
DQ
0
ENA
CLRN
Carry-Out
Cascade-Out
LE-Out
Clearable Counter Mode
Carry-In
data1 (ena)
data2 (nclr)
data3 (data)
data4 (nload)
3-Input
LUT
3-Input
LUT
PRN
1
DQ
0
ENA
CLRN
Carry-Out
Cascade-Out
Note:
(1) Packed registers cannot be used with the cascade chain.
Altera Corporation
LE-Out
19