Panasonic GP 31, Техническое руководство

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The memory IC1103 receives the data listed below as supplied from the UOC
IC601 through I²C bus [Fig 2.1]. It is input or output whenever it is necessary. This
memory IC is a non-volatile type, which data is maintained permanently although the
power is cut off.
Last Memory Location
These memory locations will contain the following information that must be
stored inside even if power to the EEPROM is interrupted.
1. 100 channels of BT voltage and band (VL, VH, U) information.
2. 100 channels of AFC, SKIP, COLOR SYSTEM and SIF information.
3. Last position for each switching mode.
4. Volume data.
5. TV/ AV1/ AV2 mode.
6. Recall ON/ OFF.
7. Power and auto off timer setting.
8. Service mode setting.
9. The COLOUR, NTSC TINT, BRIGHT, CONTRAST and SHARPNESS DAC
data, and each SUB-DAC data, CUT-OFF, RGB-DRIVE etc.
10. PICTURE MENU & SOUND MENU.
11. AVL
Pin No. Name Function
1 A0 GROUND
2 A1 GROUND
3 A2 GROUND
4 GND GROUND
5
SDA Serial Data In/Out
6 SCL Serial Clock Input
7 WP Write Protect Input
8 VCC 5V
2.4 Reset circuit
1. Power on reset is generated internally to the UOC IC601; hence no external reset
is required. (The TV processor generates the master reset in the system, which in
turn will reset the micro-controller.)
2. During power ON operation, or during a momentary drop in the +B voltage,
insufficient voltage supply to UOC IC601 may occur. Thus, there is a possibility
that incorrect operation of the UOC occur.
3. In order to prevent incorrect operation, a resetting pulse is activated until the
voltage fed to the UOC is normalized.
4. When the power switch is turned on, if the VDD of the UOC is less than 3.3V
then UOC starts to reset.
5. UOC start to function again when VDD becomes more than 3.3V.