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SPMS
Page 25 of 32
Figure:
Introduction
The microprocessor part of the UOC, has thecomplete control and teletext on board. User
menu, Service DefaultMode, Service Alignment Mode and Customer Service Mode are
2
generatedby the μP. Communication to other ICs is done via the I
C-bus.
I 2 C-Bus
The main control system, which consists ofthe microprocessor part of the UOC (7200), is
2
2
linked to the externaldevices (tuner, NVM, MSP, etc) by means of the I
C-bus. An internalI
C-bus is usedto control other signal processing functions, like video processing,sound IF,
vision IF, synchronization, etc.
User Interface
The S8/T8 uses a remote control withRC5 protocol. The incoming signal is connected to pin 67
of theUOC.
The "Top Control" keyboard, connectedto UOC pin 80, can also control the set. Button
7/8/2004
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