Audio Demodulator
The Sound Processor, 7600, demodulates the
Audio and performs A/D and D/A conversion.
Refer to Figure 46. The I
2
C bus controls its
operation. It uses two power supplies, the 5Vdc
and the 8V Switched. IC 7600 has its own oscil-
lator on Pins 5 and 6. It is a NTSC sound
processor. Amplitude and bandwidth of the
demodulated Audio signals can be determined in
7600 using the I
2
C bus. The Audio signal output
from the Tuner is available at the Pins 30, AFER,
and 31, AFEL.
82
To Next Page
