Xilinx CPLD Libraries Guide

About Design Elements
M16_1E
Macro: 16-to-1 Multiplexer with Enable
Supported Architectures
This design element is supported in the following architectures only:
• XC9500XL
• CoolRunner XPLA3
• CoolRunner-II
Introduction
This design element is a 16-to-1 multiplexer with enable. When the enable input (E) is High, the M16_1E
multiplexer chooses one data bit from 16 sources (D15 – D0) under the control of the select inputs (S3 – S0). The
output (O) reflects the state of the selected input as shown in the logic table. When (E) is Low, the output is Low.
Logic Table
Inputs Outputs
E S3 S2 S1 S0 D15-D0 O
0 X X X X X 0
1 0 0 0 0 D0 D0
1 0 0 0 1 D1 D1
1 0 0 1 0 D2 D2
CPLD Libraries Guide
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