About unused pin of CDCM6208V2

Hi satoshi-san,

①Are Unused output (Y0～Y7) left open?

　Are These VDD (ex.VDD_Y7) connect to VCC?

Unused outputs can be left unconnected/open. They can also be disabled via I2C or by holding the corresponding VDD pin that powers them low.

②When LVCMOS input, is N-ch left open or GND?

See schematic on page 78 of the datasheet for handling differential and single-ended inputs

③Is unused SEC_REF left open?

See above

④Is unused SYNCN left open?

　（SYNCN have internal pull-up）

Yes. Unused SYNCN can be left open.

Regards

Arvind Sridhar