OKI
ML2502 Demo Board
3
Phrase 1 can be controlled via the REC1 and PLAY1 pins, while Phrase 2 can be
controlled via the REC2 and PLAY2 pins respectively.
In Single-phrase mode record/playback must be performed with the REC1 being
connected to the REC2 pin and the PLAY1 being connected to the PLAY2 pin
respectively.
In both playback modes repetitive playback function for the same phrase is available.
1.
Dual-Phrase Record/Playback Mode
1-1. Phrase 1 Recording Operation
(1)
Keep on inputting “H” level to the REC1 pin to power up and start recording
from the top address of the memory. Recording goes on while the REC1 pin
being held “H” level.
(2)
The LSI automatically ends recording when the center address has been
reached.
(3)
The LSI automatically shifts to low-power consumption mode after recording
ends.
(4)
To stop recording for phrase 1 before reaching the center address, bring the
REC1 pin down to “L” level. The LSI automatically shifts to low-power
consumption mode after recording stops.
(5)
During recording operation any signal input to other pins than the REC1 is
disregarded.
Note:
Re-recording always causes to overwrite the existing recording data for a given
phrase.
Figure 1.1 Timing Chart for Phrase 1 Recording Operation
Start
Stop
Invalid Input
Stopping Process
Power Down
Powering Up
Recording
Power Down
Powering Down
MON
REC2
REC1
Status
