YMF795 Datasheet, PDF (9/45 Pages) YAMAHA CORPORATION – APL-2 Automobile sound Player-2

YMF795
■Explanation of Registers
The YMF795 has three types of control registers: musical score data, timbre data, and other control data.
□Musical score data register
$00h Musical score data
The musical score data are written into the 32-word FIFO. There are two types of musical score data: note
data and rest data.
Note data Default: 0000h
Index B15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
$00h BL1 BL0 NT3 NT2 NT1 NT0 CH1 CH0 VIB TI3 TI2 TI1 TI0 TK2 TK1 TK0
BL1 – BL0 : Octave block setting
Three octave blocks are available for sound range setting. The setting range is 1 to 3. Do not set “0.”
In addition, the sound generation range is affected by the coefficient called “Multiple (multiplying factor for sound
generation frequency).”
By combining the octave block and Multiple settings, sounds can be generated in the range as listed in the table blow.
Since the setting range of “Multiple” coefficient is 0 to 7, actually, sounds wider than those given in the table below can
be generated.
BL[1:0] = 01b
BL[1:0] = 10b
BL[1:0] = 11b
Multiple = 1 (x1)
C#3 (139Hz)
D3 (147Hz)
D#3 (156Hz)
E3 (165Hz)
F3 (175Hz)
F#3 (185Hz)
G3 (196Hz)
G#3 (208Hz)
A3 (220Hz)
A#3 (233Hz)
B3 (247Hz)
C4 (262Hz)
C#4 (277Hz)
D4 (294Hz)
D#4 (311Hz)
E4 (330Hz)
F4 (349Hz)
F#4 (370Hz)
G4 (392Hz)
G#4 (415Hz)
A4 (440Hz)
A#4 (466Hz)
B4 (494Hz)
C5 (523Hz)
C#5 (554Hz)
D5 (587Hz)
D#5 (622Hz)
E5 (659Hz)
F5 (698Hz)
F#5 (740Hz)
G5 (784Hz)
G#5 (831Hz)
A5 (880Hz)
A#5 (932Hz)
B5 (988Hz)
C6 (1046Hz)
Multiple = 2 (x2)
C#4 (277Hz)
D4 (294Hz)
D#4 (311Hz)
E4 (330Hz)
F4 (349Hz)
F#4 (370Hz)
G4 (392Hz)
G#4 (415Hz)
A4 (440Hz)
A#4 (466Hz)
B4 (494Hz)
C5 (523Hz)
C#5 (554Hz)
D5 (587Hz)
D#5 (622Hz)
E5 (659Hz)
F5 (698Hz)
F#5 (740Hz)
G5 (784Hz)
G#5 (831Hz)
A5 (880Hz)
A#5 (932Hz)
B5 (988Hz)
C6 (1046Hz)
C#6 (1109Hz)
D6 (1175Hz)
D#6 (1245Hz)
E6 (1319Hz)
F6 (1397Hz)
F#6 (1480Hz)
G6 (1568Hz)
G#6 (1661Hz)
A6 (1760Hz)
A#6 (1865Hz)
B6 (1976Hz)
C7 (2093Hz)
Multiple = 4 (x4)
C#5 (554Hz)
D5 (587Hz)
D#5 (622Hz)
E5 (659Hz)
F5 (698Hz)
F#5 (740Hz)
G5 (784Hz)
G#5 (831Hz)
A5 (880Hz)
A#5 (932Hz)
B5 (988Hz)
C6 (1046Hz)
C#6 (1109Hz)
D6 (1175Hz)
D#6 (1245Hz)
E6 (1319Hz)
F6 (1397Hz)
F#6 (1480Hz)
G6 (1568Hz)
G#6 (1661Hz)
A6 (1760Hz)
A#6 (1865Hz)
B6 (1976Hz)
C7 (2093Hz)
C#7 (2217Hz)
D7 (2349Hz)
D#7 (2489Hz)
E7 (2637Hz)
F7 (2794Hz)
F#7 (2960Hz)
G7 (3136Hz)
G#7 (3322Hz)
A7 (3520Hz)
A#7 (3729Hz)
B7 (3951Hz)
C8 (4186Hz)
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