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MUXF5

2-to-1 Lookup Table Multiplexer with General Output

XC3000
XC4000E
XC4000X
XC5200
XC9000
Spartan
SpartanXL
Virtex
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Primitive

figures/x8431.gif

MUXF5 provides a multiplexer function in one half of a Virtex CLB for creating a function-of-5 lookup table or a 4-to-1 multiplexer in combination with the associated lookup tables. The local outputs (LO) from the two lookup tables are connected to the I0 and I1 inputs of the MUXF5. The S input is driven from any internal net. When Low, S selects I0. When High, S selects I1.

The variants, “MUXF5_D” and “MUXF5_L”, provide additional types of outputs that can be used by different timing models for more accurate pre-layout timing estimation.

Inputs
Outputs
S
I0
I1
O
0
1
X
1
0
0
X
0
1
X
1
1
1
X
0
0

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