YM3404DF or YM3619DF (16 bit over sampling digital filter) YM3619 YM3404 PinName Pin No. Pin No. …..11.....................7................SDI.......... …..10.....................6...............SDSY....... …...8.....................5...............BCI.......... …...4.....................3...............XI............. …...3.....................2...............XO........... ….22...................14...............ST............ ….23...................15...............FEN......... ….13.....................9...............DLO......... ….14....................10...............DRO........ ….15....................11...............WCO........ ….17....................12...............BCO......... …..2......................1...............SHL.......... ….24...................16...............SHR......... ….12.....................8...............VDD1....... …..5.....................4...............VDD2....... ….20...................13...............VSS......... Remark YM3619; not used pins has been left open, NO connecting to ground. Source ServiceManual of YAMAHA CDX900/CDX900U CompactDisc Player 3.25K363 Printed in Japan '87.3