ymf795 Yamatake Corporation, ymf795 Datasheet - Page 9

• Manufacturer Part Number: ymf795
• Description: Apl-2 Automobile Sound Player-2
• Manufacturer: Yamatake Corporation

YMF795
■Explanation of Registers
BL1 – BL0 : Octave block setting
□Musical score data register
$00h Musical score data
Note data
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.
The YMF795 has three types of control registers: musical score data, timbre data, and other control 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.
Index
$00h
B15
BL1
Default: 0000h
BL[1:0] = 01b
BL[1:0] = 10b
BL[1:0] = 11b
BL0
b14
b13
NT3 NT2
b12
Multiple = 1 (x1)
NT1
C6
D3
D#3 (156Hz)
G3
G#3 (208Hz)
A3
A#3 (233Hz)
D4
D#4 (311Hz)
G4
G#4 (415Hz)
A4
A#4 (466Hz)
D5
D#5 (622Hz)
G5
G#5 (831Hz)
A5
A#5 (932Hz)
C#3 (139Hz)
E3
B3
C4
C#4 (277Hz)
E4
B4
C5
C#5 (554Hz)
E5
B5
b11
F3
F#3 (185Hz)
F4
F#4 (370Hz)
F5
F#5 (740Hz)
(1046Hz)
(175Hz)
(349Hz)
(698Hz)
(147Hz)
(165Hz)
(196Hz)
(220Hz)
(247Hz)
(262Hz)
(294Hz)
(330Hz)
(392Hz)
(440Hz)
(494Hz)
(523Hz)
(587Hz)
(659Hz)
(784Hz)
(880Hz)
(988Hz)
NT0
b10
CH1
b9
-9-
CH0
b8
Multiple = 2 (x2)
D6
D#6 (1245Hz)
G6
G#6 (1661Hz)
A6
A#6 (1865Hz)
C6
C#6 (1109Hz)
E6
B6
C7
F6
F#6 (1480Hz)
C#4 (277Hz)
D4
D#4 (311Hz)
G4
G#4 (415Hz)
A4
A#4 (466Hz)
B4
C5
C#5 (554Hz)
D5
D#5 (622Hz)
G5
G#5 (831Hz)
A5
A#5 (932Hz)
B5
E4
F4
F#4 (370Hz)
E5
F5
F#5 (740Hz)
VIB
(1397Hz)
(1046Hz)
(1175Hz)
(1319Hz)
(1568Hz)
(1760Hz)
(1976Hz)
(2093Hz)
(330Hz)
(349Hz)
(659Hz)
(698Hz)
b7
(294Hz)
(392Hz)
(440Hz)
(494Hz)
(523Hz)
(587Hz)
(784Hz)
(880Hz)
(988Hz)
TI3
b6
TI2
b5
Multiple = 4 (x4)
D6
D#6 (1245Hz)
G6
G#6 (1661Hz)
A6
A#6 (1865Hz)
D7
D#7 (2489Hz)
G7
G#7 (3322Hz)
A7
A#7 (3729Hz)
C6
C#6 (1109Hz)
E6
B6
C7
C#7 (2217Hz)
E7
B7
C8
F6
F#6 (1480Hz)
F7
F#7 (2960Hz)
C#5 (554Hz)
D5
D#5 (622Hz)
G5
G#5 (831Hz)
A5
A#5 (932Hz)
B5
E5
F5
F#5 (740Hz)
TI1
b4
(1397Hz)
(2794Hz)
(1046Hz)
(1175Hz)
(1319Hz)
(1568Hz)
(1760Hz)
(1976Hz)
(2093Hz)
(2349Hz)
(2637Hz)
(3136Hz)
(3520Hz)
(3951Hz)
(4186Hz)
(659Hz)
(698Hz)
(587Hz)
(784Hz)
(880Hz)
(988Hz)
TI0
b3
TK2
b2
TK1
b1
TK0
b0