YM3613C

The YM3613C has the following features including Reference clock output and internally required liming signals can all be generated by merely connecting a liquid crystal;The YM3613C has a function for switching the format of the 16-bit serial Voice signal input,so that the data can be output using the Digital Audio Interface format regardless of whether it was input started from the MSB or LSB;Its built-in PLL circuit outputs clocks of a central 8.6436MHz frequency in accordance with the input frequency of the WCI pin;The YM3613C outputs the External Digital signals of the Digital Audio Interface format.

The YM3613C is an LSI device used for signal processing in order to output Voice Digital signals of a CD player to the external world. Digital signal output to the external world enables Digital  Audio  Interface  Format  signals  to  be  output  without  requiring  a  special externally-mounted circuit.  This YM3613C has a built-in PLL (Phase-Locked Loop) circuit,which synchronizes the sampling frequency that is input to this LSI device to 44.1 KHz.The VCO oscillating frequency will change so that a phase comparison of WCI andwill produce equivalent phases. The oscillating frequency will rise when the WCI phase is delayed,and will fall when the WCI phase is advanced. When their phases are equal, the VCO oscillating frequency of the B pin will become 8.6436MHz.Be sure not to connect the ADJ pin (it is not particularly required for adjustment).

The above timing charts of YM3613C are standard examples. The broken line within the figure indicate the sections in which the changing point of the data cannot be clearly shown.BCI, DIN, WCI, and VFL operate on a different clock than DO, WCO, DDO, and BCO.Within the broken-line section, if the VFL pin is set "H" for an interval longer than one BCII clock, the Validity flag of DDO will become "H".