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Altera Corporation
FLEX 10KE Embedded Programmable Logic Family Data Sheet
Figure 11. FLEX 10KE LE Operating Modes
ENA
PRN
CLRN
DQ
4-Input
LUT
Carry-In
Cascade-Out
Cascade-In
LE-Out to FastTrack
Interconnect
LE-Out to Local
Interconnect
ENA
Normal Mode
PRN
CLRN
DQ
Cascade-Out
LE-Out
Cascade-In
3-Input
LUT
Carry-In
3-Input
LUT
Carry-Out
Arithmetic Mode
Up/Down Counter Mode
PRN
CLRN
D
Q
3-Input
LUT
Carry-In
Cascade-In
LE-Out
3-Input
LUT
Carry-Out
1
0
Cascade-Out
Clearable Counter Mode
PRN
CLRN
DQ
3-Input
LUT
Carry-In
LE-Out
3-Input
LUT
Carry-Out
1
0
Cascade-Out
ENA
data1
data4
data3
data2
data1
data2
data1 (ena)
data2 (u/d)
data4 (nload)
data3 (data)
data1 (ena)
data2 (nclr)
data4 (nload)
data3 (data)