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IC001 Memory Data Retrieval
After reset, one of IC001's first programs is to retrieve data from the
external EEProm memory IC003. Data and clock are output IC001/pins
36 and 38 to request a reading of all the memory information. The memory
information is serially output IC003/pin 5 and stored in Micro IC001's
resident memory (internal RAM). This memory information contains:
· The user's picture and sound preferences;
· The last active TV station information; and
· The TV operating parameters (height, width, linearity, OSD position,
etc).
Each time the user's preferences and channel are changed, the Micro
IC001 loads these changes into memory IC003.
Micro IC001 and Memory IC003 communications occur during these times:
Micro – Memory Communications
When
Direction
Plug In
To Micro
User command
To Memory
change
Purpose
Load user and operating parameters into
working RAM in IC001.
Each time the user changes a preference (like
volume, or channel number).
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