HD15531 查看數據表（PDF） - Intersil
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HD15531 Datasheet PDF : 16 Pages
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HD-15531
VALID WORD
TAKE DATA
SYNC DATA
SYNC DATA
SELECT
SYNC
CLOCK
DECODER
CLOCK
SYNC CLOCK
SELECT
BIPOLAR
ZERO IN
BIPOLAR
ONE IN
UNIPOLAR
DATA IN
TRANSITION
SELECT
COMMAND
SYNC
DECODER
PARITY SELECT
COUNT C0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
NC 16
17
18
19
20
A B CK H
74164
A B CK
74164
PARALLEL OUT
40
39
38
37
36
35 NC
34
33
32
31
30
29
28
27
26
25
24
23
22
21
OH SH/LD CK SI OH SH/LD CK SI
74165
74165
PARALLEL IN
VCC
COUNT C1
COUNT C4
DATA SYNC
COUNT C3
ENCODER
PARITY SEL.
SYNC
SELECT
ENCODER
ENABLE
BIPOLAR
ONE OUT
INHIBIT
OUTPUT
BIPOLAR
ZERO OUT
COUNT C2
MASTER
RESET
FIGURE 3. HOW TO MAKE OUR MTU LOOK LIKE A MANCHESTER ENCODED UART
Typical Timing Diagrams for a Manchester Encoded UART
ENCODER ENABLE
SYNC SELECT
PARALLEL IN
BIPOLAR ONE OUT
BIPOLAR ZERO OUT
VALID
SYNC
P
MSB
P
LSB PARITY
FIGURE 4. ENCODER TIMING
VALID
8
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