A32100DX-PLB datasheet(6/84 Pages) ACTEL

6 / 84 page

Inte gra t or Serie s FP GAs: 1 200XL a nd 3200 DX F amilie s

Discontinued – v3.0

L ogi c Mod ul es

3200DX and 1200XL devices contain three types of logic

modules:

combinatorial

(C-modules),

sequential

(S-modules), and decode (D-modules). 1200XL devices

contain only the C-module and S-module, while the 3200DX

devices contain D-modules and dual-port SRAM modules in

addition to the S-module and C-module.

The C-module is shown in Figure 1 and implements the

following function:

Y=!S1*!S0*D00+!S1*S0*D01+S1*!S0*D10+S1*S0*D11

where:

S0=A0*B0

S1=A1+B1

The S-module shown in Figure 2 is designed to implement

high-speed sequential functions within a single logic

module. The S-module implements the same combinatorial

logic function as the C-module while adding a sequential

element. The sequential element can be configured as

either a D-type flip-flop or a transparent latch. To increase

flexibility, the S-module register can be bypassed so that it

implements purely combinatorial logic.

Figure 1 • C-Module Implementation

D00

D01

D10

D11

Figure 2 • S-Module Implementation

D11

D01

D00

D10

OUT

Up to 7-Input Function Plus D-Type Flip-Flop with Clear

D11

D01

D00

D10

Up to 7-Input Function Plus Latch

Up to 4-Input Function Plus Latch with Clear

D11

D01

D00

D10

YOUT

Up to 8-Input Function (Same as C-Module)

CLR

OUT

CLR

OUT

GATE

A32100DX-PLB Datasheet(PDF) 6 Page - Actel Corporation

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