YMU757B Datasheet, PDF (10/43 Pages) YAMAHA CORPORATION – MA-1C

YMU757B
G#5 (831Hz)
A5 (880Hz)
A#5 (932Hz)
B5 (988Hz)
C6 (1046Hz)
G#6 (1661Hz)
A6 (1760Hz)
A#6 (1865Hz)
B6 (1976Hz)
C7 (2093Hz)
G#7 (3322Hz)
A7 (3520Hz)
A#7 (3729Hz)
B7 (3951Hz)
C8 (4186Hz)
NT3 - NT0 : Pitch setting
Four bits from NT3 to 0 are used to specify the pitch. The bit assignment is as shown below.
NT[3:0]
0h
1h
2h
3h
4h
5h
6h
7h
8h
9h
Ah
Bh
Ch
Dh
Eh
Fh
Pitch
Prohibition
C#
D
D#
Prohibition
E
F
F#
Prohibition
G
G#
A
Prohibition
A#
B
C
About "prohibition of a setup"
ç ç ç ç ç ç ç Though LSI never hangs up, different sound may be made. Never set it up.
CH1 - CH0 : Part setting
As the sound generator can generate sounds in 4 parts simultaneously, set the part for each note by using CH1 and 0
bits.
CH[1:0]
Part
00b
0
01b
1
10b
2
11b
3
VIB : Vibrato setting
This bit is used to set Vibrato function on or off for each note : "0" to set it off and "1" to set it on. The vibrato
frequency is 6.4Hz and the modulation rate is ±13.47 cent.
When VIB bit of timbre data($10-2Fh) is "0", Vibrato function off.
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