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7220 Datasheet(PDF) 213 Page - Renesas Technology Corp

Part # 7220
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  303 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7220 Datasheet(HTML) 213 Page - Renesas Technology Corp

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5-40
APPLICATION
5.5 Example of I2C-BUS control by software (M37220M3-XXXSP/FP)
7220 Group User’s Manual
s Bit 0: Color system determination bit 0 (CONDITION)
This bit indicates whether the color system is being determined or not. Figure 5.5.16 shows the
state of determination, according to the bit, when AUTO (bit 5 at sub-address 0616, write data) is
set to “1.” When AUTO (bit 5 at sub-address 0616, write data) is set to “0,” bit 0 is invalid as the
color system is not determined automatically.
s Bit 1: Color system determination bit 1 (SECAM)
Bit 2: Color system determination bit 2 (NTSC)
These bits determine the color system.
s Bit 3: 3.58/4.43 determination bit (3.58)
This bit determines whether a color signal sub-carrier of the color system is 3.58 MHz or 4.43 MHz.
s Bit 4: AFT signal detection bit 0 (AFT0)
Bit 5: AFT signal detection bit 1 (AFT1)
These bits detect the level of the auto fine tuning signal.
s Bit 6: Synchronous presence determination bit (COINCIDENCE)
This bit determines whether Pin H.OUT output is synchronized with the video signal or not.
s Bit 7: Field Frequency determination bit (50/60)
This bit determines whether the field frequency is 50 Hz or 60 Hz. According to the state of this
bit, the display position or a vertical direction size of video can be changed.



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