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參數資料
| 型號： | MC68177 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 尋呼電路 |
| 英文描述： | FLEXchip Decoder(FLEXchip譯碼器) |
| 中文描述： | TELECOM, PAGING DECODER, PQFP32 |
| 封裝： | TQFP-32 |
| 文件頁數： | 5/8頁 |
| 文件大小： | 180K |
| 代理商： | MC68177 |
MC68177
Application Examples
PRELIMINARY
MOTOROLA
MC68177
5
APPLICATION EXAMPLES
The MC68177 chip also has an internal demodulator. When using the internal demodulator, a
limited (i.e. 1-bit digitized) 455 kHz or 140 kHz IF signal is fed from the receiver into the FLEX
decoder IC via the
S0/IFIN
pin. When using the internal demodulator, the oscillator frequency
(or external clock) must be 160 kHz. The
CLKOUT
38.4 kHz signal created by fractionally dividing the oscillator clock, or a 40 kHz signal creating
by dividing the oscillator clock by 4.
signal can be programmed to be either a
38.4 or 40 kHz clock
160 kHz Oscillator
S0/IFIN
Receiver
Control
Synthesizer
Programming Control
Receiver
Low Battery
Detector
LOBAT
Host
Microprocessor
User
Interface
MC68177
Figure 3
Example Block Diagram Using Internal Demodulator
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