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When only the internal video signal is used in the uPD6464A or uPD6465, must the composite synchronization signal (CSYNC) be input?

April 26, 2017Composite csync input Internal signal synchronization upd6464a Used video

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When only the internal video signal is used in the uPD6464A or uPD6465, must the composite synchronization signal (CSYNC) be input?

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A1 The composite synchronization signal (CSYNC) does not need to be input when internal video signal mode is used. With the uPD6464A or uPD6465, the synchronization signal is automatically generated by using the 4fsc signal generated by 4fsc crystal oscillation or ×4 multiplication oscillation.