EP20K30ETC144-2N Datasheet, PDF (21/117 Pages) Altera Corporation – Programmable Logic Device Family

APEX 20K Programmable Logic Device Family Data Sheet
Figure 9. APEX 20K Interconnect Structure
Row
I/O
I/O
I/O
I/O
Interconnect
I/O
MegaLAB
MegaLAB
MegaLAB
MegaLAB
I/O
MegaLAB
I/O
Column
Interconnect
MegaLAB
MegaLAB
MegaLAB
I/O
Column
Interconnect
MegaLAB
I/O
MegaLAB
MegaLAB
MegaLAB
I/O
I/O
I/O
I/O
I/O
A row line can be driven directly by LEs, IOEs, or ESBs in that row.
Further, a column line can drive a row line, allowing an LE, IOE, or ESB to
drive elements in a different row via the column and row interconnect.
The row interconnect drives the MegaLAB interconnect to drive LEs,
IOEs, or ESBs in a particular MegaLAB structure.
A column line can be directly driven by LEs, IOEs, or ESBs in that column.
A column line on a device’s left or right edge can also be driven by row
IOEs. 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.
Altera Corporation
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