Entity: nco_counter_logic

Diagram

boolean TEST boolean RESET_ACCUM natural LUT_SIZE natural COUNTER_SIZE natural DATA_SIZE std_logic cpu_clk_i std_logic clk_i std_logic rst_i std_logic enable_i std_logic sync_i std_logic_vector(COUNTER_SIZE-1 downto 0) max_accum_i std_logic_vector(LUT_SIZE-1 downto 0) cpt_off_i std_logic_vector(COUNTER_SIZE-1 downto 0) cpt_inc_i std_logic trigger_o std_logic_vector(DATA_SIZE -1 downto 0) cos_o std_logic_vector(DATA_SIZE -1 downto 0) sin_o std_logic sin_fake_o std_logic wave_en_o std_logic cos_fake_o

Description

(c) Copyright: OscillatorIMP Digital Author : Gwenhael Goavec-Merougwenhael.goavec-merou@trabucayre.com

Creation date : 2015/04/08

Generics

Generic name Type Value Description
TEST boolean false
RESET_ACCUM boolean false
LUT_SIZE natural 10
COUNTER_SIZE natural 32
DATA_SIZE natural 16

Ports

Port name Direction Type Description
cpu_clk_i in std_logic
clk_i in std_logic
rst_i in std_logic
enable_i in std_logic configuration (wishbone)
sync_i in std_logic
max_accum_i in std_logic_vector(COUNTER_SIZE-1 downto 0)
cpt_off_i in std_logic_vector(LUT_SIZE-1 downto 0)
cpt_inc_i in std_logic_vector(COUNTER_SIZE-1 downto 0)
trigger_o out std_logic
cos_o out std_logic_vector(DATA_SIZE -1 downto 0) nexttep_scale_o : out std_logic_vector(LUT_SIZE-1 downto 0);
sin_o out std_logic_vector(DATA_SIZE -1 downto 0)
sin_fake_o out std_logic
wave_en_o out std_logic
cos_fake_o out std_logic

Signals

Name Type Description
counter_next_s std_logic_vector(COUNTER_SIZE-1 downto 0)
counter_s std_logic_vector(COUNTER_SIZE-1 downto 0)
counter_sin_s std_logic_vector(COUNTER_SIZE-1 downto 0)
counter_scale_s std_logic_vector(LUT_SIZE-1 downto 0)
counter_sin_scale_s std_logic_vector(LUT_SIZE-1 downto 0)
counter_sin_off_s std_logic_vector(LUT_SIZE-1 downto 0)
counter_cos_off_s std_logic_vector(LUT_SIZE-1 downto 0)
sin_next std_logic
cos_next std_logic
cos_s std_logic_vector(15 downto 0)
sin_s std_logic_vector(15 downto 0)
cos_scale_del_s std_logic_vector(LUT_SIZE-1 downto 0)
cos_del_s std_logic_vector(COUNTER_SIZE-1 downto 0)
int_rst_s std_logic
rst_accum_s std_logic reset accum
cpt_s std_logic_vector(COUNTER_SIZE-1 downto 0)
trig_cpt_s natural range 0 to MAX_TRIG
counter_old_s std_logic
reinit_counter_s std_logic

Constants

Name Type Value Description
MAX_TRIG natural 3 trigger
sin_static_offset_s unsigned(COUNTER_SIZE-2 downto 0) '1' & (COUNTER_SIZE-3 downto 0 => '0')

Processes