S5T8702X01-E0R0 데이터 시트보기 (PDF) - Samsung

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S5T8702X01-E0R0

FEEX™ ALPHANUMERIC DECODER II

Samsung 

S5T8702

FEEXTM ALPHANUMERIC DECODER II

Receiver

Audio

Audio to

Digital

Converter

Synthesizer

Programming Control

Receiver

Control

EXTS1

EXTS0

S5T8702

Low Battery LOBAT

Detector

Host

Microprocessor

38.4 kHz Clock

10pF

10pF

User

Interface

Figure 2 : Example Block Diagram Using External Demodulator

The S5T8702 can also be configured to connect to a receiver capable of converting a 4 level audio signal into a

2 bit digital signal. In this mode, the S5T8702 has a 8 receiver control lines used for warming up and shutting

down a receiver in stages. It also includes configuration setting for the two post detection filter bandwidths

required to decode the two symbol rates of the FLEX signal. Also when using an external demodulator, the

oscillator frequency (or external clock) must be 76.8kHz and the CLKOUT signal (when enabled) is 38.4kHz

clock output capable of driving other devices.

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