
YMU757B
-2-
Contents
General description of YMU757B.…
……………………………………………………………3
Block description……..
…………………………………………………………………………4
Pin configuration…..
……………………………………………………………………………5
Pin description….
………………………………………………………………………………6
Block diagram…..
………………………………………………………………………………7
Register map…….
………………………………………………………………………………8
Explanation of registers….
………………………………………………………………………9-20
Musical score data...
……………………………………………………………………9-13
Timbre data……….
……………………………………………………………………14-17
Other control data………
………………………………………………………………17-20
Power-down control division diagram……
………………………………………………………21
Explanation of each bit..…...
……………………………………………………………………21-23
Resetting………………………………………..….
………………………………………………24
Settings & procedure required to generate melody………………
…………………………………24
Settings of clock frequency………………………………………
…………………………………24
Interrupt sequence...…..……
……………………………………………………………………25
State transition description..……...
………………………………………………………………26-27
Operation in FIFO empty state...
…………………………………………………………………28
Reproduction method assuming occurrence of empty state…
………………………………………28
Example of system connection...
…………………………………………………………………29
One sound and volume level adjustment in 4 sound pronunciation.…
………………………………30-31
Sound quality correction circuit.
…………………………………………………………………32-33
Serial interface specifications.…
…………………………………………………………………34
Electrical characteristics….…
……………………………………………………………………35-40
General description of FM sound generator.…
……………………………………………………41
External dimensions……..
………………………………………………………………………42