EPF10K30E Datasheet, PDF(30/100 Page) Altera Corporation

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EPF10K30E Datasheet, PDF (30/100 Pages) Altera Corporation – Embedded Programmable Logic Device

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FLEX 10KE Embedded Programmable Logic Devices Data Sheet

Figure 14. FLEX 10KE Interconnect Resources

I/O Element (IOE)

IOE IOE

See Figure 17

for details.

IOE

Row

Interconnect

LAB

Column

Interconnect

IOE

LAB

IOE

See Figure 16

for details.

LAB A5

LAB A4

IOE

Cascade &

Carry Chains

LAB B5

LAB B4

IOE IOE

I/O Element

An IOE contains a bidirectional I/O buffer and a register that can be used

either as an input register for external data that requires a fast setup time,

or as an output register for data that requires fast clock-to-output

performance. In some cases, using an LE register for an input register will

result in a faster setup time than using an IOE register. IOEs can be used

as input, output, or bidirectional pins. For bidirectional registered I/O

implementation, the output register should be in the IOE, and the data

input and output enable registers should be LE registers placed adjacent

to the bidirectional pin. The Altera Compiler uses the programmable

inversion option to invert signals from the row and column interconnect

automatically where appropriate. Figure 15 shows the bidirectional I/O

registers.

Altera Corporation

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