ML2215 Datasheet, PDF (20/26 Pages) OKI electronic componets – Speech Synthesizer plus Music LSI with On-Chip 3 Mbit Mask ROM

1Semiconductor
FEDL2215-01
ML2215
(3) End-Bit
The end-bit is set at the first byte, the MSB, of music phrase data. As soon as the LSI starts to output the last note
code where the end-bit is set to “1”, the Music Generator circuit issues an end-music interrupt call and stops
playback after the last note code has been output.
8.3 Sample Musical Note Codes
Table 8.6 shows sample codes to output a part of musical score shown in Figure 8.3.
=120
Figure 8.3
Table 8.6 Coding Sample
Note Code
Musical
Note
1st Byte
2nd Byte
7
6543210 7
65
432
1
0
Hexa-
decimal
END —* L5 L4 L3 L2 L1 L0 N7 N6 N5 N4 N3 N2 N1 N0
G² 0 0 1 0 1 1 1 1 0 1 0 1 0 0 0 0 2F50H
D² 0 0 0 0 1 1 1 1 0 1 1 0 1 0 1 1 0F6BH
G² 0 0 0 1 0 1 1 1 0 1 0 1 0 0 0 0 1750H
D² 0 0 0 0 0 1 1 1 0 1 1 0 1 0 1 1 076BH
G² 0 0 0 1 0 1 1 1 0 1 0 1 0 0 0 0 1750H
A² 0 0 0 0 0 1 1 1 0 1 0 0 0 1 1 1 0747H
B² 0 0 1 1 1 1 1 1 0 0 1 1 1 1 1 1 3F3FH
G² 1 0 1 1 1 1 1 1 0 1 0 1 0 0 0 0 BF50H
Note: * Bit 6 of the first byte can be either “0” or “1” (Don’t care bit), so is set to “0” in the above sample
codes.
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