HCS362_11 MICROCHIP [Microchip Technology], HCS362_11 Datasheet - Page 9
![no-image](/images/no-image-200.jpg)
HCS362_11
Manufacturer Part Number
HCS362_11
Description
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.HCS362_11.pdf
(46 pages)
- Current page: 9 of 46
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3.1
The HCS362 transmission is made up of several code
words. Each code word starts with a preamble and a
header, followed by the data (see Figure 3-1 and
Figure 3-2).
The code words are separated by a Guard Time that
can be set to 0 ms, 6.4 ms, 25.6 ms or 76.8 ms with the
Guard Time Select (
option. All other timing specifications for the modulation
formats are based on a basic timing element (T
Timing Element can be set to 100 μs, 200 μs, 400 μs
or 800 μs with the Baud Rate Select (
FIGURE 3-2:
FIGURE 3-3:
FIGURE 3-4:
© 2011 Microchip Technology Inc.
Preamble
Transmission Modulation Format
1
1 2
Preamble
CODE WORD TRANSMISSION SEQUENCE
TRANSMISSION FORMAT (PWM)
TRANSMISSION FORMAT (MANCHESTER)
Header
16
GUARD
31 T
START bit
Header
1 CODE WORD
E
Preamble
[
0..1
Encrypt
bit 0 bit 1 bit 2
]) configuration
BSEL
Encrypted
Portion
[
Fixed
E
0..1
). This
16
Header
3-10
T
])
E
Guard
Encrypted
Portion
configuration option. The Header Time can be set to
3 T
figuration option.
There are two different modulation formats available on
the HCS362 that can be set according to the Modula-
tion Select (MOD) configuration option:
• Pulse Width Modulation (PWM)
• Manchester Encoding
The various formats are shown in Figure 3-3 and
Figure 3-4.
E
Fixed Code
or 10 T
Portion
Preamble
E
with the Header Select (HEADER) Con-
LOGIC "0"
LOGIC "1"
Fixed Code
Portion
STOP bit
LOGIC "0"
LOGIC "1"
Header
Guard
Time
T
HCS362
E
T
Encrypt
Guard
Time
E
T
T
T
BP
DS40189E-page 9
BP
E
T
E
T
E
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