Oki ML2502 Instruction Manual Download Page 10

OKI

ML2502 Demo Board

10

3. Repeating Playback Operation

(1)

 

To repeat playback of the same phrase, keep on inputting “H” level to the PLAY1
or PLAY2 pin.  “H” level input to the PLAY1 or PLAY2 causes the LSI to power
up and start playback.

(2)

 

The LSI automatically restarts playback when the last address of the phrase has
been reached.

(3)

 

When the playback reaches to the last address of the phrase, with the PLAY1 or
PLAY2 pin being held “L” level, the LSI automatically ends playback.

(4)

 

The LSI automatically powers down after playback ends.

(5)

 

To stop playback before repetitive playback session ends, bring the PLAY1 or
PLAY2 pin down to “L” level once, and then re-input a “H” pulse to the PLAY1 or
PLAY2 pin.  The LSI automatically shifts to low-power consumption mode after
playback stops.

Figure 3.1  Timing Chart for Repetitive Playback Operation

Start Pulse

Stop Pulse

Power Down Powering Up

Playing Back

Power Down

Powering Down

MON

PLAY2

PLAY1

Status

Interval

Playing Back

End Playing

Resume Plaing

Summary of Contents for ML2502

Page 1: ...the POWER and LED 12 2 ERASE Erase enable signal input switch used together with the REC1 6 and or the REC2 5 3 PLAY2 Input start playback signal for Phrase 2 to this switch 4 PLAY1 Input start playba...

Page 2: ...s set 8 SP GAIN When Turn right the volume is increase 9 SPEAKER Connect the speaker 10 MICROPHONE Connect the microphone 11 MON During recording and playback turn on the LED RECORD and PLAYBACK OPERA...

Page 3: ...e 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...

Page 4: ...er playback ends 4 To stop playback of phrase 1 before reaching the last address input a H pulse again to the PLAY1 or PLAY2 pin This will cause the LSI to stop playback and then automatically shift t...

Page 5: ...on 1 4 Phrase 2 Recording Operation 1 Keep on inputting H level to the REC2 pin to power up and start recording from the top address of the memory Recording goes on while the REC2 pin being held H lev...

Page 6: ...se again to the PLAY1 or PLAY2 pin This will cause the LSI to stop playback and then automatically shift to low power consumption mode 5 During playback operation signal input to the PLAY1 or PLAY2 pi...

Page 7: ...in Keep on inputting H level to the REC1 and the REC2 pin to power up and start recording from the top address of the memory Recording goes on while the REC1 and the REC2 pin being held at H level 2 T...

Page 8: ...tomatically shifts to low power consumption mode after playback ends 4 To stop playback of the phrase before reaching its last address input H pulses again to the PLAY1 and the PLAY2 pins simultaneous...

Page 9: ...nnot be abandoned in the middle once getting started Internally the LSI performs erasing by recording Silence from the top address as far as to address 250 Therefore if you attempt to playback the era...

Page 10: ...the PLAY1 or PLAY2 pin being held L level the LSI automatically ends playback 4 The LSI automatically powers down after playback ends 5 To stop playback before repetitive playback session ends bring...

Page 11: ...F SAM1 TEST SPOUT AGND SPIN AOUT MON SAM2 ROSC ML2502MB DVDD 51pF 200k 0 47 F 10k From Microphone 0 47 F 2 3 1 HSJ 0785 3 4 5 6 8 11 10 9 1nF 20k 0 47 F 50k DGND To Speaker 2 3 1 HSJ 0785 VR1 5 1k DGN...

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