MSM6588 Просмотр технического описания (PDF) - Oki Electric Industry

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MSM6588

ADPCM Solid-State Recorder (for Serial Registers)

Oki Electric Industry 

¡ Semiconductor

MSM6588/6588L

2 Timing during recording by voice triggered starting

(PDMD pin=”L”, VDS pin=”H”) ..................................................................................................... 25

3. Timing during playback (PDMD pin=”L”) ................................................................................... 26

4. Timing during repeated playback (PDMD pin=”L”) ................................................................... 26

5. Timing during recording (PDMD pin=”H”, VDS pin=”L”) ....................................................... 27

6. Timing during recording by voice triggered starting

(PDMD pin=”H”, VDS=”H”) ........................................................................................................... 27

7. Timing during playback (PDMD pin=”H”) .................................................................................. 28

8. Timing during repeated playback (PDMD pin=”H”) .................................................................. 28

9. Timing of pause in record/playback .............................................................................................. 29

Microcontroller Interface ........................................................................................................................... 30

1. Data read (RD pulse) ......................................................................................................................... 30

2. Data write (WR pulse) ....................................................................................................................... 30

3. Input method of 1 nibble command

(NOP, PAUSE, PLAY, REC, START and STOP commands) ....................................................... 31

4. Input method of 2 nibble command

(SAMP, CHAN and VDS commands) ............................................................................................ 31

5. Input method of ADRWR command .............................................................................................. 32

6. Input method of ADRRD command ............................................................................................... 32

7. Recording method by START command ....................................................................................... 33

8. Timing of voice triggered starting ................................................................................................... 33

9. Playback method using START command .................................................................................... 34

10. Timing of pause in record/playback using PAUSE command .................................................. 34

11. Timing of data transfer by DTRW command ................................................................................ 35

12. Timing of recording by EXT command .......................................................................................... 35

13. Timing of playback by EXT command ........................................................................................... 36

FUNCTIONAL DESCRIPTION .......................................................................................................................... 37

Recording Time and Memory Capacity .................................................................................................. 37

Analog Input Amplifier Circuit ................................................................................................................ 37

Connection of LPF Circuit Peripherals .................................................................................................... 38

LPF Characteristics ..................................................................................................................................... 40

Full Scale of A/D and D/A Converters .................................................................................................. 40

Voice Triggered Starting ............................................................................................................................ 41

How to Connect an Oscillator .................................................................................................................. 42

How to Connect Power Supply ................................................................................................................ 44

Data Configuration of External Serial Registers .................................................................................... 44

1. Channel index area ............................................................................................................................ 45

2. Voice (ADPCM) data area ................................................................................................................ 46

Selection of Serial Registers ....................................................................................................................... 47

Recording Control Modes ......................................................................................................................... 47

1. Direct mode ........................................................................................................................................ 47

2. Fixed mode ......................................................................................................................................... 47

3. Flex mode ............................................................................................................................................ 48

Channel Usage ............................................................................................................................................ 49

1. Selection of a channel in direct mode and flex mode ................................................................... 49

2. Channel selection in fixed mode ..................................................................................................... 49

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