epf81188ari240-4h Altera Corporation, epf81188ari240-4h Datasheet - Page 19

• Manufacturer Part Number: epf81188ari240-4h
• Description: Programmable Logic Device Family
• Manufacturer: Altera Corporation

Altera Corporation
Figure 10. FLEX 8000 IOE
Numbers in parentheses are for EPF81500A devices only.
From Row or Column
Interconnect
To Row or Column
Interconnect
Row-to-IOE Connections
Figure 11
and IOEs. An input signal from an IOE can drive two separate row
channels. When an IOE is used as an output, the signal is driven by an
n-to-1 multiplexer that selects the row channels. The size of the
multiplexer varies with the number of columns in a device. EPF81500A
devices use a 27-to-1 multiplexer; EPF81188A, EPF8820A, EPF8636A, and
EPF8452A devices use a 21-to-1 multiplexer; and EPF8282A and
EPF8282AV devices use a 13-to-1 multiplexer. Eight IOEs are connected to
each side of the row channels.
I/O Controls
illustrates the connection between row interconnect channels
(6)
VCC
FLEX 8000 Programmable Logic Device Family Data Sheet
6
VCC
Programmable
Inversion
D
CLRN
Q
Slew-Rate
Control
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