ep2a40b724i8 Altera Corporation, ep2a40b724i8 Datasheet - Page 22

• Manufacturer Part Number: ep2a40b724i8
• Description: Programmable Logic Device Family
• Manufacturer: Altera Corporation

APEX II Programmable Logic Device Family Data Sheet
22
Figure 11. Driving the FastTrack Interconnect
APEX II devices feature FastRow
with high fan-out. Column I/O pins can drive the FastRow interconnect,
which routes signals directly into the local interconnect without having to
drive through the MegaLAB interconnect. FastRow lines traverse two
MegaLAB structures. The FastRow interconnect drives the four
MegaLABs in the top row and the four MegaLABs in the bottom row of
the device. The FastRow interconnect drives all local interconnects in the
appropriate MegaLABs. Column pins using the FastRow interconnect
achieve a faster set-up time, because the signal does not need to use a
MegaLab interconnect line to reach the destination LE.
the FastRow interconnect.
Interconnect
Row
Interconnect
Local
LE
TM
MegaLAB
Interconnect
lines for quickly routing input signals
Column
Interconnect
Figure 12
Altera Corporation
shows