tb Architecture Reference

Architecture tb of quad_decoder_tb entity. More...

Functions
string	to_string ( vector: in unsigned )
	Function to create string from unsigned.

Processes
pr_clock	( )
	Clock generation process.
pr_stimulus	( )
	Stimulus process to drive PWM unit under test.

Use Clauses
rst
	Reset input.
quad_a
	Quadrature a signal.
quad_b
	Quadrature b signal.

Constants
c_clk_period	time := 10 ns
	Test bench clock period.
c_stimulus	t_stimulus_array := ( ( name = > " Reset " , rst = > ' 1 ' , quad_a = > ' 0 ' , quad_b = > ' 0 ' , count = > B " 000 " ) , ( name = > " No change ( 0 ) " , rst = > ' 0 ' , quad_a = > ' 0 ' , quad_b = > ' 0 ' , count = > B " 000 " ) , ( name = > " Increment ( 1 ) " , rst = > ' 0 ' , quad_a = > ' 1 ' , quad_b = > ' 0 ' , count = > B " 001 " ) , ( name = > " Increment ( 2 ) " , rst = > ' 0 ' , quad_a = > ' 1 ' , quad_b = > ' 1 ' , count = > B " 010 " ) , ( name = > " Increment ( 3 ) " , rst = > ' 0 ' , quad_a = > ' 0 ' , quad_b = > ' 1 ' , count = > B " 011 " ) , ( name = > " Increment ( 4 ) " , rst = > ' 0 ' , quad_a = > ' 0 ' , quad_b = > ' 0 ' , count = > B " 100 " ) , ( name = > " Increment ( 5 ) " , rst = > ' 0 ' , quad_a = > ' 1 ' , quad_b = > ' 0 ' , count = > B " 101 " ) , ( name = > " Increment ( 6 ) " , rst = > ' 0 ' , quad_a = > ' 1 ' , quad_b = > ' 1 ' , count = > B " 110 " ) , ( name = > " Increment ( 7 ) " , rst = > ' 0 ' , quad_a = > ' 0 ' , quad_b = > ' 1 ' , count = > B " 111 " ) , ( name = > " Increment ( 0 ) " , rst = > ' 0 ' , quad_a = > ' 0 ' , quad_b = > ' 0 ' , count = > B " 000 " ) , ( name = > " No change ( 0 ) " , rst = > ' 0 ' , quad_a = > ' 0 ' , quad_b = > ' 0 ' , count = > B " 000 " ) , ( name = > " Decrement ( 7 ) " , rst = > ' 0 ' , quad_a = > ' 0 ' , quad_b = > ' 1 ' , count = > B " 111 " ) , ( name = > " Decrement ( 6 ) " , rst = > ' 0 ' , quad_a = > ' 1 ' , quad_b = > ' 1 ' , count = > B " 110 " ) , ( name = > " Decrement ( 5 ) " , rst = > ' 0 ' , quad_a = > ' 1 ' , quad_b = > ' 0 ' , count = > B " 101 " ) , ( name = > " Decrement ( 4 ) " , rst = > ' 0 ' , quad_a = > ' 0 ' , quad_b = > ' 0 ' , count = > B " 100 " ) , ( name = > " No change ( 4 ) " , rst = > ' 0 ' , quad_a = > ' 0 ' , quad_b = > ' 0 ' , count = > B " 100 " ) , ( name = > " Glitch ( 4 ) " , rst = > ' 0 ' , quad_a = > ' 1 ' , quad_b = > ' 1 ' , count = > B " 100 " ) , ( name = > " Glitch ( 4 ) " , rst = > ' 0 ' , quad_a = > ' 0 ' , quad_b = > ' 0 ' , count = > B " 100 " ) , ( name = > " Increment ( 5 ) " , rst = > ' 0 ' , quad_a = > ' 1 ' , quad_b = > ' 0 ' , count = > B " 101 " ) , ( name = > " Reset " , rst = > ' 1 ' , quad_a = > ' 1 ' , quad_b = > ' 0 ' , count = > B " 000 " ) , ( name = > " No change ( 1 ) " , rst = > ' 0 ' , quad_a = > ' 1 ' , quad_b = > ' 0 ' , count = > B " 001 " ) )
	Test stimulus.

Types
t_stimulus_array	array ( natural range <> ) of t_stimulus
	Stimulus array type.

Signals
clk	std_logic
	Signal 'clk' to uut.
quad_count	unsigned ( 2 DOWNTO 0 )
	Signal 'quad_count' from uut.

Records
t_stimulus
	Stimulus record type.
name	string ( 1 TO 20 )
	Stimulus name.
count	unsigned ( 2 DOWNTO 0 )
	Expected quadrature count.

Instantiations
i_uut	quad_decoder <Entity quad_decoder>
	Instantiate quad_decoder as unit under test.

Detailed Description

Architecture tb of quad_decoder_tb entity.

Definition at line 20 of file quad_decoder_tb.vhd.

Member Data Documentation

quad_a

quad_a

Package

Quadrature a signal.

Signal 'quad_a' to uut.

Definition at line 29 of file quad_decoder_tb.vhd.

quad_b

quad_b

Package

Quadrature b signal.

Signal 'quad_b' to uut.

Definition at line 30 of file quad_decoder_tb.vhd.

rst

rst

Package

Reset input.

Signal 'rst' to uut.

Definition at line 28 of file quad_decoder_tb.vhd.

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The documentation for this class was generated from the following file:

• fpga/common/utility/sim/quad_decoder_tb.vhd