EP3C16F256I7N Altera, EP3C16F256I7N Datasheet - Page 34

• Manufacturer Part Number: EP3C16F256I7N
• Description: Cyclone III
• Manufacturer: Altera

Logic Elements and Logic Array Blocks in Cyclone III Devices
Figure 2–2. LE Register Cascade
2–4
Cyclone III Device Handbook, Volume 1
LUT
LUT
LUT
Register chain
connection
The LUT carry chain may connect to other LUTs from different LEs. The
LE carry chain feature is achieved by connecting an LE carry-out to the
next LE carry-in. LE carry chains can span more than 16 LEs by using the
LAB carry-in and LAB carry-out.
Figure 2–3
To general or
To general or
To general or
local routing
local routing
local routing
Altera Corporation-Preliminary
shows LE carry chains.
chain output
chain output
chain output
Register
Register
Register
March 2007