ep2c35 Altera Corporation, ep2c35 Datasheet - Page 50

• Manufacturer Part Number: ep2c35
• Description: Cyclone Ii Device Family Data Sheet
• Manufacturer: Altera Corporation

I/O Structure & Features
2–38
Cyclone II Device Handbook, Volume 1
Figure 2–20. Cyclone II IOE Structure
Note to
(1)
The IOEs are located in I/O blocks around the periphery of the Cyclone II
device. There are up to five IOEs per row I/O block and up to four IOEs
per column I/O block (column I/O blocks span two columns). The row
I/O blocks drive row, column (only C4 interconnects), or direct link
interconnects. The column I/O blocks drive column interconnects.
Figure 2–21
Figure 2–22
There are two paths available for combinational or registered inputs to the logic
array. Each path contains a unique programmable delay chain.
Figure
Logic Array
shows how a row I/O block connects to the logic array.
shows how a column I/O block connects to the logic array.
2–20:
Input (1)
Output
OE
Output Register
Input Register
OE Register
Altera Corporation
February 2007