Altera Designing With Low-Level Primitives Manual de usuario descargar pdf (Pagina 38)

2–16 Altera Corporation

Designing with Low-Level Primitives User Guide April 2007

Primitives

Example 2–11. ALT_OUTBUF_TRI_DIFF Primitive Instantiation, Verilog HDL

module test (

datain_h,

datain_l,

oe,

outclock,

dataout,

dataout_n

);

input datain_h;

input datain_l;

input outclock;

input oe;

output dataout;

output dataout_n;

wire tmp_out;

wire tmp_oe;

my_altddio_out altddio_out_inst (

.outclock (outclock),

.datain_h (datain_h),

.datain_l (datain_l),

.dataout (tmp_out),

.aclr (1'b0),

.aset (1'b0),

.oe (oe),

.outclocken (1'b1),

.oe_out (tmp_oe),

.sclr (1'b0)

);

ALT_OUTBUF_TRI_DIFF my_outbuf (

.i (tmp_out),

.oe (tmp_oe),

.o(dataout),

.obar(dataout_n)

);

defparam my_outbuf.io_standard = "LVDS";

endmodule

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Altera Designing With Low-Level Primitives Manual de usuario Pagina 38