SM1124 Series

NIPPON PRECISION CIRCUITS—6

*: Tune plays repeatedly when ST is HIGH, and stops immediately when ST goes LOW.

SI

ST

MTO

#n1 Play

#n1 Play

#n1 Play

#n1 Data

#n2 Data

#n2 Play

Playback timing diagrams

Playback start

Playback starts 128 ± 1 SCK clock cycles after ST

goes HIGH.

Playback stop

Playback stops immediately when ST goes LOW.

The IC internal clock also stops, regardless of

whether or not there is a clock input signal on pin

CLK.

,,,,,,

,,,,,,

SI

SC

ST

MTO

MSB

LSB

Invalid

Data

Valid

Data

CLK

Internal

Clock

128

1 Clock

,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,

ST

MTO

CLK

Internal

Clock