HD6433935 Hitachi, HD6433935 Datasheet - Page 343

• Manufacturer Part Number: HD6433935
• Description: 8-Bit MICROCONTROLLER
• Manufacturer: Hitachi

The FLEX decoder 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 FLEX decoder has 8 receiver control lines
used for warming up and shutting down a receiver in stages. It also includes configuration settings
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 (or external clock) must be 76.8
kHz and the CLKOUT signal (when enabled) is 38.4 kHz clock output capable of driving other
devices.
Audio to Digital
Audio
Low Battery
Convertor
Receiver
Detector
Figure 12-2 Example Block Diagram Using External Demodulator
Synthesizer Programming Control
EXTS1
EXTS0
LOBAT
Receiver
Control
This LSI
38.4 clock
76.8 kHz Oscillator
Interface
User
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