Page 6-1
Control Circuity
Even with many advanced features such as Digital
Convergence Circuitry, PIP/POP, V-Chip Program
Blocking and the Diagnostic Mode, the Control cir-
cuitry is not overly complex. An overview of the
circuit is shown above. A 100 pin surface mount
µPC is the heart of the Control circuitry. Primary
inputs come from either the front keyboard or the
remote. Most output commands are communicated
by way of four I
2
C Buses.
Besides receiving and generating commands, the in-
ternal circuitry in the µPC:
• Processes Closed Caption signals.
• Generates signals for On Screen Displays.
• Performs V-Chip Program Blocking.
Section 6
Control Circuitry
Summary of Contents for VS-45605
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