Cyclone 2,3 and 4 ALM/LAB definiation

[Altera_Forum]

Hi, 

 On the link below I can see the LAB definitions of all Arria, Stratix and Cyclone 5 ALM /LAB  http://quartushelp.altera.com/12.1/mergedprojects/reference/glossary/def_alm.htm   Where can I find them for the Cyclone 2, 3 and 4?  I need this because I need to specify placement constrains for my design that need to apply to all Altera FPGA’s.  Rgds, Kimberley

[Altera_Forum]

--- Quote Start ---  Hi,  On the link below I can see the LAB definitions of all Arria, Stratix and Cyclone 5 ALM /LAB  http://quartushelp.altera.com/12.1/mergedprojects/reference/glossary/def_alm.htm   Where can I find them for the Cyclone 2, 3 and 4?  I need this because I need to specify placement constrains for my design that need to apply to all Altera FPGA’s.  Rgds, Kimberley  --- Quote End ---   Hi, I think you will not be able to find them for Cyclone 2, 3 and 4 (no supported device).  Reread you link: The following figures show the basic architecture and numbering convention for the ALMs and LUT resources within a LAB in supported device (Arria series Cyclone V, Stratix II, Stratix II GX, Stratix III, Stratix IV, and Stratix V) families.

[Altera_Forum]

Refer to the documentation for each FPGA family you're interested in. This is all available on Altera's website. Look for the 'architecture' (or similar) document under the family's documentation tab. 

 A quick look reveals a Cyclone II LAB contains: "16 LE's, LAB control signals, LE carry chains, local interconnect". Cyclone II's basic building block is a Logic Element (LE) - as it is for Cyclone III & IV.