HD3-15530-9 Intersil Corporation, HD3-15530-9 Datasheet - Page 5

• Manufacturer Part Number: HD3-15530-9
• Description: CMOS Manchester Encoder-decoder
• Manufacturer: Intersil Corporation

How to Make Our MTU Look Like a Manchester Encoded UART
Typical Timing Diagrams for a Manchester Encoded UART
ENCODER CLK
VALID WORD
UNIPOLAR
COMMAND
BIPOLAR ZERO OUT
DECODER
DECODER
BIPOLAR
BIPOLAR
ZERO IN
DATA IN
ENCODER ENABLE
BIPOLAR ONE OUT
ONE IN
RESET
BIPOLAR ZERO IN
SYNC
COMMAND SYNC
BIPOLAR ONE IN
PARALLEL OUT
SYNC SELECT
PARALLEL IN
VALID WORD
A
74LS164
B
PARALLEL OUT
CK H
RECEPTION
PREVIOUS
SYNC
SYNC
FROM
VALID
A
74LS164
VALID
B
MSB
MSB
CK
FIGURE 4. ENCODER TIMING
FIGURE 5. DECODER TIMING
10
11
12
HD-15530
1
2
3
4
5
6
7
8
9
FIGURE 3.
5-146
24
23
22
21
20
19
18
17
16
15
14
13
LSB
LSB
PARITY
P
P
P
P
PARITY
O
74165
H
SH/LD CK SI
PARALLEL IN
O
74165
H
VALID
SH/LD
CK
VALID
ZERO OUT
ENCODER
BIPOLAR
BIPOLAR
ONE OUT
MASTER
ENABLE
OUTPUT
SELECT
INHIBIT
RESET
SYNC
V
CC