ep1s25 Altera Corporation, ep1s25 Datasheet - Page 119

• Manufacturer Part Number: ep1s25
• Description: Stratix Device Family Data Sheet
• Manufacturer: Altera Corporation

Figure 2–59. Stratix IOE Structure
Altera Corporation
July 2005
Logic Array
Output B
Output A
Input B
Input A
OE
Output Register
Output Register
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
Figure 2–61
D
D
Q
Q
shows how a row I/O block connects to the logic array.
shows how a column I/O block connects to the logic array.
CLK
OE Register
OE Register
D
D
Q
Q
Input Register
Input Register
Stratix Device Handbook, Volume 1
D
D
Q
Q
Input Latch
D
ENA
Stratix Architecture
Q
2–105