A14100 Просмотр технического описания (PDF) - Microsemi Corporation

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A14100

Accelerator Series FPGAs – ACT 3 Family

Microsemi Corporation 

Detailed Specifications

Logic Modules

ACT 3 logic modules are enhanced versions of the 1200XL family logic modules. As in the 1200XL

family, there are two types of modules: C-modules and S-modules (Figure 2-2 and Figure 2-3). The C-

module is functionally equivalent to the 1200XL C-module and implements high fanin combinatorial

macros, such as 5-input AND, 5-input OR, and so on. It is available for use as the CM8 hard macro. The

S-module is designed to implement high-speed sequential functions within a single module.

D00

D01

D10

D11

S1

Y

OUT

S0

Figure 2-2 • C-Module Diagram

A1 B1 A0 B0

D00

D01

Y

D10

D11

S1

S0

DQ

OUT

A1 B1 A0 B0

CLK CLR

Figure 2-3 • S-Module Diagram

S-modules consist of a full C-module driving a flip-flop, which allows an additional level of logic to be

implemented without additional propagation delay. It is available for use as the DFM8A/B and DLM8A/B

hard macros. C-modules and S-modules are arranged in pairs called module-pairs. Module-pairs are

arranged in alternating patterns and make up the bulk of the array. This arrangement allows the

placement software to support two-module macros of four types (CC, CS, SC, and SS). The C-module

implements the following function:

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

EQ 1

where: S0 = A0 * B0 and S1 = A1 + B1

2-2

Revision 3

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