Mitsubishi V19-V21, Tehnical Manual

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10-2
Waveform Generator & A/D
Converter.
Figure 10-1 illustrates the Convergence Waveform
Generator and the A/D Converter. IC800 is the
Waveform Generator. It operates from a 3.3 volt
DC supply. No input buffers are needed for the hori-
zontal and vertical pulses from the Deflection cir-
cuitry. Also the external PLL circuitry used in previ-
ous models is no longer required.
The same control signals from the Control circuitry
are used:
• C-SDA … I 2 C Data Line
• C-SCL …. I
2
C Clock Line
• C-ACK … Command Acknowledgment line
• C-BUSY … Busy Line
• C-MUTE … Momentarily disables the
Convergence Circuitry during Channel
Change, Input Change and during On/Off.
The HV-ADJ PWM signal and the DF parabolic sig-
nal are still generated in the Waveform Generator.
Six A/D Converter ICs were used in previous models.
In the V19/V21 there is only one A/D Converter IC,