EP1S40F1020C5 Datasheet, PDF (129/292 Pages) Altera Corporation – Stratix Device Handbook, Volume 1

Figure 2–59. Stratix IOE Structure
Logic Array
OE
OE Register
DQ
Stratix Architecture
OE Register
DQ
Output A
Output Register
DQ
CLK
Output Register
Output B
DQ
Input A
Input B
Input Register
DQ
Input Register
DQ
Input Latch
DQ
ENA
The IOEs are located in I/O blocks around the periphery of the Stratix
device. There are up to four IOEs per row I/O block and six IOEs per
column I/O block. The row I/O blocks drive row, column, or direct link
interconnects. The column I/O blocks drive column interconnects.
Figure 2–60 shows how a row I/O block connects to the logic array.
Figure 2–61 shows how a column I/O block connects to the logic array.
Altera Corporation
July 2005
2–105
Stratix Device Handbook, Volume 1