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HCS473-SLROM 数据表(PDF) 14 Page - Microchip Technology

部件名 HCS473-SLROM
功能描述  Code Hopping Encoder and Transponder
PDF  68 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

HCS473-SLROM 数据表(HTML) 14 Page - Microchip Technology

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HCS473
DS40035C-page 12
Preliminary
 2002 Microchip Technology Inc.
FIGURE 3-1:
GENERAL CODE WORD FORMAT
FIGURE 3-2:
CODE WORD ORGANIZATION
Preamble
Header
Guard
Time
Data Bits
S2
S1
S0 S3
Synchronization
Counter
Synchronization
Counter
LSb
V
LOW
1-Bit
Fixed Code Portion (35 Bits)
CRC
2 Bits
V
LOW
1-Bit
SER 1
Most Sig 16 Bits
SER 0
Least Sig 16 Bits
BUT
4 Bits
DISCRIM
8 Bits
20 Bits
20
0
Hopping Code Portion Message (32 Bits)
C1 C0
MSb
67 Data bits
Transmitted LSb first.
Hopping Code:
Fixed Code Portion (37 Bits)
QUE
2 Bits
CRC
2 Bits
BUT
4 Bits
S2
S1
S0 S3
SER 0
Least Sig16 Bits
BUT
4 Bits
Counter
Overflow
2 Bits
DISCRIM
10 Bits
Synchronization
16 Bits
Counter
15
0
S2
S1
S0 S3
OVR1
OVR0
Hopping Code Portion Message (32 Bits)
Q1 Q0 C1 C0
MSb
LSb
69 Data bits
Transmitted LSb first.
SER 1
12 MSb’s
Hopping Code:
CRC
2 Bits
V
LOW
1-Bit
BUT
4 Bits
SDVAL3
12 Most Sig Bits
111
1
SDVAL2
16 Bits
SDVAL1
16 Bits
SDVAL0
16 Least Sig Bits
C1 C0
LSb
MSb
Shaded 65 bits included in CRC calculation
69 Data bits
Transmitted LSb first.
Fixed Code Portion (9 Bits)
Seed Value (60 Bits)
Seed Code:
20-bit Synchronization Counter (CNTSEL=1)
16-bit Synchronization Counter (CNTSEL=0)
32-bit Serial Number (XSER = 1)
28-bit Serial Number (XSER = 0)
Button Queuing enabled (QUEN=1)
Button Queuing disabled (QUEN=0)
Queuing enabled (QUE = 1)
S2
S1
S0 S3
QUE
2 Bits
Q1 Q0



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