EP1M350 datasheet(15/86 Pages) ALTERA

15 / 86 page

Altera Corporation

Mercury Programmable Logic Device Family Data Sheet

Figure 5. Mercury LAB Structure

Notes to Figure 5:

(1)

Priority column lines drive priority row lines, but not other row lines.

(2)

The RapidLAB interconnect can be driven by priority column lines, but not other column lines.

(3)

In multiplier mode, the RapidLAB interconnect drives LEs directly.

Mercury devices use an interleaved LAB structure, which allows each

LAB to drive two local interconnect areas. Every other LE drives to either

the left or right local interconnect area, alternating by LE. The local

interconnect can drive LEs within the same LAB or adjacent LABs. This

feature minimizes use of the row and column interconnects, providing

higher performance and flexibility. Each LAB structure can drive 30 LEs

through fast local interconnects.

The 10 LEs in the LAB are driven by

two local interconnect areas. The LAB

can drive two local interconnect areas.

Local Interconnect

Column and Priority

Column Interconnect (1)

Row and Priority

Row Interconnect (1)

RapidLAB Interconnect

to LAB in Row Above

to LAB in Row Below

Leap Line

Interconnect

(2)

(3)

EP1M350 Datasheet(PDF) 15 Page - Altera Corporation