EP2A15 Datasheet, PDF (21/99 Pages) Altera Corporation – Programmable Logic Device Family

APEX II Programmable Logic Device Family Data Sheet
A column line can be directly driven by the LEs, IOEs, or ESBs in that
column. Row IOEs can drive a column line on a device’s left or right edge.
The column line is used to route signals from one row to another. A
column line can drive a row line; it can also drive the MegaLAB
interconnect directly, allowing faster connections between rows.
Figure 10 shows how the FastTrack interconnect uses the local
interconnect to drive LEs within MegaLAB structures.
Figure 10. FastTrack Connection to Local Interconnect
I/O
Row
I/O
LL
LE
AA
AS
BB
BB
MegaLAB
Column
ELL
L
SAA
A
BBB
B
MegaLAB
MegaLAB
Interconnect
Row
Row & Column
Interconnect Drives
MegaLAB Interconnect
MegaLAB
Interconnect Drives
Local Interconnect
L
L
A
A
B
B
L
E
A
S
B
B
Column
Figure 11 shows the intersection of a row and column interconnect and
how these forms of interconnects and LEs drive each other.
Altera Corporation
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