YMF795 Datasheet, PDF (10/45 Pages) YAMAHA CORPORATION – APL-2 Automobile sound Player-2

YMF795
NT3 - NT0 : Pitch setting
Four bits from NT3 to 0 are used to specify the pitch. The bit assignment is as follows.
NT[3:0]
0h
1h
2h
3h
4h
5h
6h
7h
8h
9h
Ah
Bh
Ch
Dh
Eh
Fh
Pitch
Setting Prohibited
C#
D
D#
Setting Prohibited
E
F
F#
Setting Prohibited
G
G#
A
Setting Prohibited
A#
B
C
About “Setting Prohibited.”
Although LSI never hangs, unusual sound may be generated. Never set it.
CH1 - CH0 : Part setting
As the sound source section can simultaneously generate sounds in 4 parts, set the part of a note by using CH1 and 0
bits.
CH[1:0]
00b
01b
10b
11b
Part setting
0
1
2
3
VIB : Vibrato setting
This bit is used to set ON/OFF of Vibrato function for each note: “0” for OFF and “1” for ON. The vibrato frequency
is 6.4 Hz and the modulation depth is ±13.47 cent.
Note that Vibrato function becomes OFF when VIB bit of timbre data ($10-2Fh) is “0.”
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