03W023A
Melody Sound Source LSI for Cellular Phone
BU8788KN
Description
BU8788KN is a melody sound source LSI for cellular
phones. This LSI generates 32 polyphonic tones
simultaneously and is capable of generating user's
own sounds by an ADPCM decoder. A total of 207
tones(128tones+47drums +32effect sounds) can be
generated. FIFO and Sequencer for playing are
incorporated. The sequencer itself can control the
timing and play the music by sending the melody
data to FIFO.
Dimension (Unit : mm)
1.1±0.15
+0.15
0.6
−0.3
6.2±0.1
6.0±0.1
35
0.
3-
28
−
50
0.
6.2±0.1
6.0±0.1
27
19
18
5
.2
±
0
±
0
.1
0.
20
0.2±0.05
12∞
12∞
Features
1) PCM sound source
2) 32 harmonies generator available at the same time
128 sounds+drum set 47 sounds generation
3) ADPCM decode functions are mounted, and mixing
with sounds is possible.
4) FIFO buffer and sequencer are used to reduce CPU load
5) PitchBend and vibrato available
6) Integrated stereo sound DAC
7) CPU control through serial and parallel I/F
QFN36V
Applications
Sound source for cellular phones and portable appliances
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Supply voltage range
Power dissipation
Operating temperature range
Storage temperature range
Symbol
V
DD
Pd
Topr
Tstg
–40
–50
–0.3
Limits
450
∗
Unit
V
mW
~ +
4.5
~ +
85
~ +
125
˚C
˚C
∗
Derating : 4.5mW/˚C for operation above Ta=25˚C
February, 2003
0.01
−0.007
0.6±0.1
0.8±0.15
+0.03
.2
+
0 0.4
36
1
9
10
0.5
0.20±0.05
0.05
M
0.05
Recommended Operating Conditions (Ta=25˚C)
Parameter
Supply voltage range
Symbol
V
DD
Min.
2.7
Typ.
3.0
Max.
3.6
Unit
V
Electrical characteristics (
Unless otherwise noted; Ta=25˚C, Vcc=3.0V)
Parameter
Clock input frequency
ANOUT pin load resistance
VREF pin rise time
PLL pin rise time
ANOUT amplitude
Analog operating
current consumption
Digital operating
current consumption
Analog static current
Digital static current
Symbol
F
MCLK
Z
AN
T
RVR
T
RPLL
V
MAX
I
DDA
I
DDD
I
stA
I
stD
Min.
12
50
Typ.
—
—
70
—
0.667V
DD
1
33
—
—
Max.
20
—
100
10
—
2
50
5
5
Unit
MHz
kΩ
ms
ms
V
P-P
mA
mA
µA
µA
Conditions
Scale precision is within 0.2%
After DC Coupling
After releasing RESET when CVREF=1µF
After releasing RESET or STANDBY mode
(When C=4.7nF between PLL-FILTER pin and GND)
—
—
—
—
—
—
—
Theoretical value of dynamic range
Playing mode
Playing mode
Standby mode
Standby mode
Block Diagram
DVdd
IFSEL
D[7:0]
CPU I/F
AVdd
DVss
AVss
SCLK(/RD)
SEL(/CS)
SI/O(A0)
SO(/WR)
WAVEreg0
TONEon/off
MD[6:0]
SD[7:0]
WAVEgen0
PITCHgen.
WAVEgen.
VOL
L/R
L/R
VREF
MIDI&ADPCM
MUX
ADD
R/Lvol,Mute
Sequencer
RAM I/F
VOL
WAVEreg2
WAVEreg3
SRAM(DataFIFO)
for MIDI
WAVEgen2
WAVEgen3
WAVEgen31
L/R
WAVEreg31
VOL[7:0]
Stereo
DAC
WAVEreg1
WAVEgen1
ANOUT(L/Mono)
ANOUT(R/-)
MCLK
PLL-filter
NRST
Test-mode[1:0]
Test gen.
Clock gen.
PLL
ANOUT(Mono)
TOTALMUTE
SRAM(DataFIFO)
for ADPCM
ADPCM Decoder
VOL
RVOL[6:0]
LVOL[6:0]
INT ctrl
LED ctrl
INT
LED
Test-in[3:0]
Test-out[1:0]
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document use silicon as a basic material.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0
京公网安备 11010802033920号
EEWORLD
