简易电子琴的设计(6)

孟磊 简易电子琴的设计 第21页 共21页

END COMPONENT; COMPONENT TONE

PORT ( INDEX: IN STD_LOGIC_VECTOR(7 DOWNTO 0); CODE: OUT STD_LOGIC_VECTOR(6 DOWNTO 0); HIGH: OUT STD_LOGIC;

TONE0:OUT INTEGER RANGE 0 TO 2047); END COMPONENT; COMPONENT FENPIN PORT(CLK1: IN STD_LOGIC;

TONE1: IN INTEGER RANGE 0 TO 2047; SPKS: OUT STD_LOGIC); END COMPONET;

SIGNAL TONE2: INTEGER RANGE 0 TO 2047; SIGNAL INDX: STD_LOGIC_VECTOR(7 DOWNTO 0); BEGIN U0:AUTO

PORT

MAP(CLK=>CLK32MHZ,INDEX2=>INDEX1,INDEX0=>INDX,AUTO=>HANDTOAUTO); U1:TONE

PORT

MAP(INDEX=>INDX,TONE0=>TONE2,CODE=>CODE1,HIGH=>HIGH1); U2:FENPIN

MAP(CLK1=>CLK32MHZ,TONE1=>TONE2,SPKS=>SPKOUT); END ART;

PORT

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