EP1M350 datasheet(30/86 Pages) ALTERA

30 / 86 page

Altera Corporation

Mercury Programmable Logic Device Family Data Sheet

The RapidLAB interconnect provides a specialized high-speed structure

to allow a central LAB to drive other LABs within a 10-LAB-wide region.

The RapidLAB lines drive alternating local LAB interconnect regions,

allowing communication to all LABs in the 10-LAB-wide region. Even

numbered LEs in a LAB directly drive a RapidLAB line that drives one set

of alternating local interconnect regions, while odd-numbered LEs drive

a RapidLAB line that drives the opposite set of alternating local

interconnect regions. Figure 14 shows RapidLAB interconnect

connections. This 10-LAB wide region of the RapidLAB interconnect is

repeated for every LAB in the row. The region covered by the RapidLAB

interconnect is smaller than 10 for source LABs that are four or five LABs

in from either edge of the LAB row. The RapidLAB row interconnect is

used for LAB-to-LAB routing; it is only used by I/O bands or ESBs

indirectly through other interconnects. The RapidLAB interconnect drives

an LE directly when that LE is in multiplier mode.

EP1M350 Datasheet(PDF) 30 Page - Altera Corporation