Achronix Speedster22i User Macro Guide Manual do Utilizador descarregar pdf (Página 66)

Registers DFF

Speedster22i Macro Cell Library

AchronixSemiconductorProprietary PAGE 50

Parameters

Table 2-2: Parameters

Parameter Defined Values Default Value

init 1’b0

init

TheinitparameterdefinestheinitialvalueoftheoutputoftheDFFregister.Thisisthevalue

theregistertakesupontheinitialapplicationofpowertotheFPGA.Thedefaultvalueofthe

initparameteris1’b0.

Table 2-3: Function Table

Inputs

Output

d ck q



Verilog Instantiation Template

DFF #(.init(1’b0))

instance_name

(.q(user_out),

.d(user_din),

.ck(user_clock));

VHDL Instantiation Template

------------- ACHRONIX LIBRARY ------------

library speedster22i;

use speedster22i.components.all;

------------- DONE ACHRONIX LIBRARY ---------

-- Component Instantiation

DFF_instance_name : DFF

generic map ( init => ‘0’)

port map (q => user_out,

d => user_din,

ck => user_clock);

1’b0, 1’b1

0 0

1 1

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 ... 223 224

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Achronix Speedster22i User Macro Guide Manual do Utilizador Página 66