ymf795 Yamatake Corporation, ymf795 Datasheet - Page 14

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

The following bit assignment is used for both modulator and carrier.
The setting must be completed before any sound is generated. Change of the timbre parameter during sound generation is
prohibited.
Timbre data
ML2 - ML0 : Multiple setting
□Timbre data register
$10 – 2Fh Timbre data
EVEN
Index
ODD
Eight timbre data can be registered into the register and four data out of them can be simultaneously reprodu
ced.
Timbre is made by setting both [parameters for the modulator] and [parameters for the carrier].
(For details of the modulator and the carrier, please refer to “General description of FM sound generator” (page 41)).
“Multiple” is the multiplying factor for sound generating frequency. The output frequency is determined by the octave,
pitch, and multiple settings on the carrier side. Adjusting the Multiple on the Modulator side allows various timbre
creation.
Index 10h, 11h …… 1st timbre_ timbre data for the modulator
Index 12h, 13h …… 1st timbre_ timbre data for the carrier
Index 14h, 15h …… 2nd timbre_ timbre data for the modulator
Index 16h, 17h …… 2nd timbre_ timbre data for the carrier
Index 2Ch, 2Dh …… 8th timbre_ timbre data for the modulator
Index 2Eh, 2Fh …… 8th timbre_ timbre data for the carrier
ML2 ML1 ML0
AR1 AR0
B15
……………Omitted…………….
Default: 0000h
b14
ML [2:0]
SL3
0h
1h
2h
3h
4h
5h
6h
7h
b13
VIB
SL2
b12
EGT
Multiplying factor
SL1
B11
for frequency
X 1/2
X 1
X 2
X 3
X 4
X 5
X 6
X 7
SUS
SL0
b10
RR3 RR2
TL5
B9
-14-
TL4
b8
RR1 RR0
TL3 TL2
b7
b6
TL1
DR3 DR2 DR1 DR0
b5
TL0
b4
WAV
YMF795
b3
FL2
b2
FL1
AR3 AR2
b1
FL0
b0