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參數(shù)資料
| 型號(hào)： | HCS370TIST |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | KEELOQ Code Hopping Encoder |
| 中文描述： | 而Keeloq跳碼編碼器 |
| 文件頁數(shù)： | 14/36頁 |
| 文件大?。?/td> | 518K |
| 代理商： | HCS370TIST |
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HCS370
DS41111D-page 14
Preliminary
2002 Microchip Technology Inc.
4.0
TRANSMITTED WORD
4.1
Transmission Modulation Format
The HCS370 transmission is made up of several code
words. Each code word contains a preamble, header,
and data. A code word is separated from another code
word by guard time. The Guard Time Select (GSEL)
configuration option can be set to 0 ms, 6.4 ms, 51.2
ms, or 102.4 ms.
All other timing specifications for the modulation for-
mats are based on a basic timing element (T
E
). This
Timing Element can be set to 100
μ
s, 200
μ
s, 400
μ
s or
800
μ
s with the Baud Rate Select (BSEL) configuration
option. The Header time can be set to 4T
E
or 10T
E
with
the Header Select (HSEL) configuration option. These
options can all be set individually for Encoder 1 and
Encoder 2.
There are four different modulation formats available,
the Modulation Select (MSEL) Configuration Option is
used to select between:
Pulse Width Modulation (PWM)
Manchester (MAN)
Variable Pulse Width Modulation (VPWM)
Pulse Position Modulation (PPM)
FIGURE 4-1:
PULSE WIDTH MODULATION (PWM)
FIGURE 4-2:
MANCHESTER (MAN)
LOGIC "1"
Guard
Time
Encrypted Portion
Fixed Code Portion
LOGIC "0"
4-10
xT
E
Header
T
E
T
E
T
E
1
16
T
BP
31xT
E
50% Preamble
Guard
Time
Header
Encrypted Portion
Fixed Code Portion
START bit
STOP bit
bit 0 bit 1 bit 2
LOGIC "0"
LOGIC "1"
T
E
T
E
T
BP
31xT
E
50% Preamble
1
2
16
4xT
E
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HCS370TP | KEELOQ Code Hopping Encoder |
| HCS370TSL | KEELOQ Code Hopping Encoder |
| HCS370TST | KEELOQ Code Hopping Encoder |
| HCS374HMSR | Radiation Hardened Octal D-Type Flip-Flop, Three-State, Positive Edge Triggered |
| HCS374MS | Radiation Hardened Octal D-Type Flip-Flop, Three-State, Positive Edge Triggered(三態(tài),正邊沿觸發(fā),抗輻射八D觸發(fā)器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCS370TP | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ Code Hopping Encoder |
| HCS370TSL | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ Code Hopping Encoder |
| HCS370TST | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ Code Hopping Encoder |
| HCS373DMSR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit D-Type Latch |
| HCS373DTR | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Radiation Hardened Octal Transparent Latch, Three-State |
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