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HCS410 数据表(PDF) 21 Page - Microchip Technology

部件名 HCS410
功能描述  KEELOQ CODE HOPPING ENCODER AND TRANSPONDER
PDF  36 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

HCS410 数据表(HTML) 21 Page - Microchip Technology

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HCS410
© 1997 Microchip Technology Inc.
Preliminary
DS40158C-page 21
3.7
Configuration Data
The configuration data is used to select various
encoder options. Further explanations of each of the
bits are described in the following sections.
3.7.1
CWBE: CODE WORD BLANKING ENABLE
BSL: BAUD RATE SELECT
Selecting this option allows code blanking as shown in
Table 3-3. If this option is not selected, all code words
are transmitted.
3.7.2
IDAMP: INTELLIGENT DAMPING
If IDAMP is set to ‘1’ intelligent damping is disabled.
3.7.3
SEED, TMPSD:
SEED TRANSMISSION
3.7.4
OSC: OSCILLATOR TUNING BITS
These bits allow the onboard oscillator to be tuned to
within 10% of the nominal oscillator speed over both
temperature and voltage.
TABLE 3-1:
CONFIGURATION OPTIONS
SEED
Symbol
Description
CWBE
Code Word Blanking Enable
IDAMP
Intelligent Damping for High Q LC Tank.
SEED/
IFF2
Enable Seed Transmissions
TMPSD/
IFF2
Temporary Seed Transmissions
OSC0:3
Onboard Oscillator Tuning Bits
MTX3
Minimum 3 Code Words Transmitted
VLOW
Low Voltage Trip Point Selection
LED
Enable LED output
BSL0:1
Baudrate Select
TBSL
Transponder Baud Page
MANCH
Manchester Modulation Mode
ACOLI
Anti Collision Communication Enable
XPRF
Passive Proximity Activation
DINC
Delayed Increment Enable
XSER
Extended Serial Number
SEED
TMPSD
Description
0
0
No Seed
0
1
Seed Limited
1
0
Always Enabled
1
1
IFF2/No Seed
TABLE 3-2:
OSCILLATOR TUNING
OSC
Description
1000
Fastest
1001
1010
•
•
•
1111
Faster
0000
Nominal
0001
0010
•
•
•
0110
Slower
0111
Slowest
TABLE 3-3:
BAUD RATE SELECTION
Code Hopping Transmissions (TE)
Transponder Communication (TE)
BSL 1
BSL 0
PWM
Manchester
Codes Word
Transmitted*
TBSL
PPM
0
0
400
µs
800
µs
All
0
200
µs
0
1
200
µs
400
µs
1 of 2
—
—
1
0
100
µs
200
µs
1 of 2
—
—
1
1
100
µs
200
µs
1 of 4
1
100
µs
*If code word blanking is enabled.



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