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各位VHDL高手們,小弟寫了個6 X 64的記憶體,不過我試用實際的硬體電路來思考,並非使用軟體陣列的方式,如下:0 E2 g" t6 [% ~% m# u/ m/ m
我設計了一個decoder for column address selection,一個decoder for row address selection,然後使用generate產生64個latch陣列,但是現在我不知道該如何指定我的腳位,懇請各位給點意見,謝謝!
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LIBRARY ieee;: ]& J( M) U0 o+ Z7 }
USE ieee.std_logic_1164.all;) W9 Z) N& z+ e
USE ieee.std_logic_arith.all;3 V( }9 v4 c5 M
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ENTITY memory_64 IS
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mem_in : IN std_logic_vector ( 5 DOWNTO 0 );
o2 _5 n- X) A9 U, G1 S! g5 N mem_out : OUT std_logic_vector ( 5 DOWNTO 0 );
C: H& T$ y) k# S8 W clr_l : IN std_logic;; D4 C) X) K$ k* W: ]( M- y
mem_addr : IN std_logic_vector ( 5 DOWNTO 0 )! p1 x4 \2 I) @( ^; E& _) K
);
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& Q/ M. q3 h6 ~& l. Y9 Z0 {-- Declarations
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, y- y7 c. b4 p; TEND memory_64 ;. H0 u" @; E: \5 O+ I
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ARCHITECTURE arch OF memory_64 IS2 U L( u( i8 V& W3 u9 j
-- column decoder
5 b* f8 I! E) d2 u5 b f' U& Vcomponent mem_coldec
^/ H; U8 `) ?& _: \: Y7 ~& k PORT( / y+ D- v: a% O: ` K6 N
col_addr : IN std_logic_vector ( 2 DOWNTO 0 );7 Y1 V2 a# Y \4 x
col_sel : OUT std_logic_vector ( 7 DOWNTO 0 )
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2 m; A6 K. |3 g) F0 Y+ Iend component;
/ B+ Y: z' f* L9 ]-- row decoder
" Q% l- o% y" F8 i) \, zcomponent mem_rowdec9 ^* r" |2 Y* |$ q- V& \5 B! p
PORT( 1 G7 p0 m$ N' Z' J5 Q: K
row_addr : IN std_logic_vector ( 2 DOWNTO 0 );
& n: J4 U" d( J6 A- X1 q row_sel : OUT std_logic_vector ( 7 DOWNTO 0 )
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2 n! M; `3 Q; W0 F7 b& a5 cend component;
, @) W# s4 f. Y-- latch array * x# _; M) h2 ~6 d' r
component latch_cell9 d$ v, p4 e' _1 i6 c) I2 A
PORT( 4 U; ^/ K- M% N# ^8 @
clr_l : IN std_logic;
" _1 D2 c9 J( }7 M' E; k* Q col_sel : IN std_logic;
: }0 P, }5 W5 ]/ M5 }: y: V row_sel : IN std_logic;
6 Y `3 `: C2 | data_in : IN std_logic_vector ( 5 DOWNTO 0 );
t" x6 |& k' ]. G$ v data_out : OUT std_logic_vector ( 5 DOWNTO 0 )
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end component; . c: F0 _9 z$ g
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signal smem_out : std_logic_vector ( 5 downto 0 );! e$ ?( _. [3 t' U4 j6 {
signal scol_sel,srow_sel : std_logic_vector( 7 downto 0 );
D; W" g! V% Q. ~9 ]BEGIN
5 ]4 k- T2 P- q; Y* z u_0 : mem_coldec port map(mem_addr( 5 downto 3 ),scol_sel);" J- z5 s3 g# O2 G$ h; }9 T
u_1 : mem_rowdec port map(mem_addr( 2 downto 0 ),srow_sel);9 b, ?. r- O& G7 D( B) \' v
g0 : for i in 0 to 7 generate -- column generate$ |2 r5 r5 _8 [( r2 Y) t9 [0 r4 p% x
g1 : for j in 0 to 7 generate -- row generate
# R% t8 m' w+ z8 \7 B u_2 : latch_cell port map(clr_l,scol_sel(j),srow_sel(i),mem_in,smem_out);
" E7 k W- Y5 i% i$ u3 {3 p end generate;
2 S" y, S+ s* I& }- X: R% Z/ Z end generate;5 Q( ]' m3 B2 ^% ?
END ARCHITECTURE arch; |
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