ep2a40b724i8 Altera Corporation, ep2a40b724i8 Datasheet - Page 39

• Manufacturer Part Number: ep2a40b724i8
• Description: Programmable Logic Device Family
• Manufacturer: Altera Corporation

Altera Corporation
Figure 25. APEX II IOE Structure
Logic Array
Output A
Output B
Input A
Input B
OE
Output Register
Output Register
The IOEs are located around the periphery of the APEX II device. Each
IOE drives a row, column, MegaLAB, or local interconnect when used as
an input or bidirectional pin. A row IOE can drive a local, MegaLAB, row,
and column interconnect; a column IOE can drive the FastTrack or column
interconnect.
interconnect.
D
D
Q
Q
Figure 26
CLK
APEX II Programmable Logic Device Family Data Sheet
OE Register
OE Register
D
D
shows how a row IOE connects to the
Q
Q
Input Register
Input Register
D
D
Q
Q
Input Latch
D
ENA
Q
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