-
Notifications
You must be signed in to change notification settings - Fork 0
/
state_audio.sv
76 lines (62 loc) · 1.25 KB
/
state_audio.sv
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
module state_audio (input logic Clk, Reset_h, INIT_FINISH, RUN, data_over,
input logic [15:0] LC, RC,
output logic INIT,
output logic [15:0] LDATA, RDATA
);
enum logic [2:0] {HOLD,START, WRITE, DONE } state, next_state;
always_ff @ (posedge Clk) begin
if (Reset_h) begin
state <= START;
end
else begin
state <= next_state;
end
end
always_comb begin
next_state = state;
unique case (state)
HOLD:
if (RUN) begin
next_state = START;
end
else begin
next_state = HOLD;
end
START:
if (INIT_FINISH) begin
next_state = WRITE;
end
else begin
next_state = START;
end
WRITE:
if (data_over) begin
next_state = DONE;
end
else begin
next_state = WRITE;
end
DONE:
if (~data_over) begin
next_state = WRITE;
end
else begin
next_state = DONE;
end
endcase
end
always_comb begin
INIT = 1'b0;
LDATA = 16'd0;
RDATA = 16'd0;
case(state)
HOLD: ;
START: INIT = 1'b1;
WRITE:begin
LDATA = LC;
RDATA = RC;
end
DONE: ;
endcase
end
endmodule