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參數(shù)資料
| 型號： | HCS509 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | KEELOQ Code Hopping Encoder Product Brief*(KeeLoq 譯碼器，是NTQ109和NTQ106的替代品) |
| 中文描述： | 而Keeloq跳碼編碼器產(chǎn)品簡介*（而Keeloq譯碼器，是NTQ109和NTQ106的替代品） |
| 文件頁數(shù)： | 11/16頁 |
| 文件大小： | 117K |
| 代理商： | HCS509 |
1996 Microchip Technology Inc.
Preliminary
DS40147A-page 11
HCS509
9.0
K
EE
L
OQ
ENCODERS
9.1
Transmission Format (PWM)
The K
eral parts (Figure 9-1). Each transmission begins with
a preamble and a header, followed by the encrypted
and then the fixed data. The actual data is 56/66/67 bits
which consists of 32 bits of encrypted data and 24/34/
35 bits of non-encrypted data. Each transmission is
followed by a guard period before another transmission
can begin. The encrypted portion provides up to four
billion changing code combinations and includes the
button status bits (based on which buttons were acti-
vated) along with the synchronization counter value
and some discrimination bits. The non-encrypted por-
tion is comprised of the status bits, the function bits,
and the 24/28-bit serial number. The encrypted and
non-encrypted combined sections increase the number
of combinations to 7.38 x 10
EE
L
OQ
encoder transmission is made up of sev-
19
.
9.2
Code Word Organization
The HCSXXX encoder transmits a 66/67-bit code word
when a button is pressed. The 66/67-bit word is con-
structed from a Fixed Code portion and an Encrypted
Code portion (Figure 9-2).
The
Encrypted Data
is generated from four button bits,
two overflow counter bits, ten discrimination bits, and
the 16-bit synchronization value.
The
Non-encrypted Data
is made up from 2 status
bits, 4 function bits, and the 28/32-bit serial number.
FIGURE 9-1:
CODE WORD TRANSMISSION FORMAT
FIGURE 9-2:
CODE WORD ORGANIZATION
LOGIC ‘0’
LOGIC ‘1’
Bit
Period
Preamble
T
P
Header
T
H
Encrypted Portion
of Transmission
T
HOP
Fixed Portion of
Transmission
T
FIX
Guard
Time
T
G
Repeat
Vlow
(1 bit)
Button Sta-
tus (4 bits)
28-bit
Serial Number
Button
Status
(4 bits)
Discrimina-
tion bits
(12 bits)
16-bit
Sync Value
CRC1*
CRC0*
3/2 bits
+
Serial Number and But-
ton Status (32 bits)
+
32 bits of Encrypted Data
Encrypted Data
Non-encrypted Data
66/67 bits
of Data
Transmitted
*HCS360/361
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HCS573KMSR | Radiation Hardened Octal Transparent Latch, Three-State |
| HCS573D | Low-Voltage, Dual Hot-Swap Controllers with Independent On/Off Control |
| HCS573DMSR | Low-Voltage, Dual Hot-Swap Controllers with Independent On/Off Control |
| HCS573K | Low-Voltage, Dual Hot-Swap Controllers with Independent On/Off Control |
| HCS573MS | Low-Voltage, Dual Hot-Swap Controllers with Independent On/Off Control |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCS509-/P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Remote-Control Receiver/Decoder |
| HCS509-/SN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Remote-Control Receiver/Decoder |
| HCS509-I/P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Remote-Control Receiver/Decoder |
| HCS509-I/SN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Remote-Control Receiver/Decoder |
| HCS512 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ CODE HOPPING DECODER |
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