DS_S5T8702 Datasheet, PDF (4/62 Pages) Samsung semiconductor – FEEX ALPHANUMERIC DECODER II

S5T8702
FEEX^TM 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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