MSM9844 View Datasheet(PDF) - Oki Electric Industry
Part Name
Description
Manufacturer
MSM9844 Datasheet PDF : 32 Pages
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¡ Semiconductor
MSM9844
• Functional Description
• Voice Synthesis Algorithms
To meet user’s varying sound quality requirements, 4 different types of voice synthesis algorithms are
available for user’s selection as follows:
1. OKI 4-bit ADPCM
2. OKI 4/5/6/7/8-bit ADPCM2
3. 8/16-bit Straight PCM
4. 8-bit Non-linear PCM
• Data Formats When 8-bit Bus Selected
1. Oki 4-bit ADPCM, Oki 4-bit ADPCM2
D7
MSB1
MSB3
D6
3SB1
3SB3
D5
2SB1
2SB3
D4
LSB1
LSB3
D3
MSB2
MSB4
D2
3SB2
3SB4
D1
2SB2
2SB4
D0
LSB2
LSB4
2. Oki 5-bit ADPCM2
D7
D6
D5
X
X
X
X
X
X
D4
MSB1
MSB2
D3
4SB1
4SB2
D2
3SB1
3SB2
D1
2SB1
2SB2
D0
LSB1
LSB2
3. Oki 6-bit ADPCM2
D7
D6
D5
X
X
MSB1
X
X
MSB2
D4
5SB1
5SB2
D3
4SB1
4SB2
D2
3SB1
3SB2
D1
2SB1
2SB2
D0
LSB1
LSB2
4. Oki 7-bit ADPCM2
D7
D6
D5
X
MSB1 6SB1
X
MSB2 6SB2
D4
5SB1
5SB2
D3
4SB1
4SB2
D2
3SB1
3SB2
D1
2SB1
2SB2
D0
LSB1
LSB2
5. Oki 8-bit ADPCM2, 8-bit Linear PCM, and 8-bit Oki Non-Linear PCM
D7
MSB1
MSB2
D6
7SB1
7SB2
D5
6SB1
6SB2
D4
5SB1
5SB2
D3
4SB1
4SB2
D2
3SB1
3SB2
D1
2SB1
2SB2
D0
LSB1
LSB2
6. 16-bit Linear PCM
D7
MSB1
8SB1
D6
15SB1
7SB1
D5
14SB1
6SB1
D4
13SB1
5SB1
D3
12SB1
4SB1
D2
11SB1
3SB1
D1
10SB1
2SB1
D0
9SB1
LSB1
Page12
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