Aufgabenstellung Flankendetektor imp det> Vorteiler

Aufgabenstellung Flankendetektor imp det> Vorteiler

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STOP
IMP_DET
MAIN_CTL
clk
sw0 start
clk
cnt_en
start
reset
stop show_int
1min
10s
1s
100ms
IMP_DET
clk stop
sw1
1
0
XTAL
PRESCAL
gclk
BCD7SEG
TIME_CNT
clk
cnt_en
reset
cnt_min(3:0)
cnt_sec1(3:0)
cnt_sec0(3:0)
cnt_mil(3:0)
clk
clk
segment(6:0)
show_int
digit(3:0)
cnt_min(3:0)
cnt_sec1(3:0)
cnt_sec0(3:0)
cnt_mil(3:0)
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start == 0
reset = 0, show_int = 0, cnt_en = 0
start == 1
reset = 0, show_int = 0, cnt_en = 1
idle
stop == 1
show_int = 0
cnt_en = 0
reset = 1
stop == 0 & start = 0
reset = 0, show_int = 0, cnt_en = 1
stop == 1, reset = 0
show_int = 0, cnt_en = 0
stop == 0 & start == 1
hold
run
stop == 0 & start == 1
reset = 0, show_int = 0, cnt_en = 1
reset = 0
show_int = 1, cnt_en = 1
inttime
reset = 0, show_int = 0
cnt_en = 1
stop == 0 & start == 0
reset = 0, show_int = 0, cnt_en = 0
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Register zur Speicherung
der Zwischenzeit
clk
show_int
Multiplexer
0
1
2
3
cnt_min(3:0)
4
cnt_sec1(3:0)
5
cnt_sec0(3:0)
6
cnt_mil(3:0)
7
A(1:0)
BCD/7
Dekoder
segment(6:0)
A(2)
Zähler
0 bis 3
Dekoder
digit(3:0)
Anzeigelogik
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