MSM6688 Datasheet, PDF (63/159 Pages) OKI electronic componets – ADPCM Solid-State Recorder IC

Inputting 1-Nibble Commands (NOP, PAUSE, PLAY, REC, START, STOP and DEL Commands)
WR
(I)
RD
(I)
D0-D3
(I/O)
Status register
BUSY bit
t_DRW
Status output
t_B1, t_WBLA, t_WBL1
Status output
Command input
t_B1:
t_WBLA:
t_WBL1:
NOP, PAUSE, PLAY, REC, START, and STOP commands
DEL command (deletion of all phrases)
DEL command (deletion of a specified phrase)