PLE10P4                                              PLE DESIGN SPECIFICATION
P5004                                                  ULRIK MUELLER 04/01/83
DUAL 2:1 MULTIPLEXER
MMI SANTA CLARA, CALIFORNIA
.ADD SZ SX A1 A2 B1 B2 C1 C2 D1 D2
.DAT X1 X2 Z1 Z2


X1 = /SZ* A1      ; SELECT INPUT A1
   +  SZ* B1      ; SELECT INPUT B1

X2 = /SZ* A2      ; SELECT INPUT A2
   +  SZ* B2      ; SELECT INPUT B2

Z1 = /SX* C1      ; SELECT INPUT C1
   +  SX* D1      ; SELECT INPUT D1

Z2 = /SX* C2      ; SELECT INPUT C2
   +  SX* D2      ; SELECT INPUT D2


DESCRIPTION

THIS IS AN EXAMPLE OF TWO INDEPENDENT 2-TO-1 MULTIPLEXERS USING A PLE10P4.
THE DEVICE WILL SWITCH BETWEEN TWO PAIRS OF 2-BIT INPUTS (A, B AND C, D), AS
DETERMINED BY THE TWO SELECT LINES (SX, SZ), FOR OUTPUT THROUGH TWO PAIRS OF
2-BIT OUTPUTS (X AND Z).  THREE-STATE OUTPUTS ARE ALSO PROVIDED WITH TWO
ACTIVE LOW ENABLE PINS (/E1 AND /E2).  THE FUNCTIONS OF THE DEVICE ARE
SUMMARIZED IN THE TABLE BELOW:


SELECT    INPUT  A, B     INPUT  C, D          OUTPUT  X, Z
LINES
 S  S     A  A   B  B     C  C   D  D     !     X  X   Z  Z
 X  Z     1  2   1  2     1  2   1  2     !     1  2   1  2      FUNCTION
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 L  L     A1 A2  X  X     C1 C2  X  X     !     A1 A2  C1 C2     SELECT A, B
 L  H     A1 A2  X  X     X  X   D1 D2    !     A1 A2  D1 D2     SELECT A, D
 H  L     X  X   B1 B2    C1 C2  X  X     !     B1 B2  C1 C2     SELECT B, C
 H  H     X  X   B1 B2    X  X   D1 D2    !     B1 B2  D1 D2     SELECT B, D
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