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PDF BU8763FV Data sheet ( Hoja de datos )
| Número de pieza | BU8763FV | |
| Descripción | Melody LSI for Cellular Phone | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Communications
Melody LSI for Cellular Phone
BU8763FV
BU8763FV
BU8763FV is a melody LSI for cellular phones that can produce triple chords simultaneously.
Tone and volume in each sound source can be controlled separately by serial control. Master volume is integrated.
Master clock can be selected from 5.376MHz or 2.688MHz. Output can be changed sine wave or special square wave.
The special square wave is a waveform that can take sound pressure by even a small speaker.
!Applications
Melody sound at receiving or holding a call
!Features
1) Generating 3 waves, Controlled by CPU
2) Selectable master clock (5.376MHz / 2.688MHz)
3) Changeable parameter for wave generate
4) Including DTMF create function
5) Changeable Sine wave or special square wave
6) Serial control from CPU
7) Include smoothing filter (fc=20KHz)
8) SSOP-B16 package
!Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Digital supply voltage
DVDD
−0.3 to +4.5
Analog supply voltage
AVDD
−0.3 to +4.5
Input voltage for digital
VDIN
DVSS−0.3 to DVDD+0.3
Input voltage for analog
Power dissipation
VAIN
Pd
AVSS−0.3 to AVDD+0.3
450∗
Storage temperature range
Tstg
−50 to +125
Operating temperature range
Topr
−20 to +70
∗ To use at temperature higher than 25 C, derate 4mW / C, PCB(70mm 70mm, d=1.6mm glass epoxy)
Unit
V
V
V
V
mW
°C
°C
1/11
1 page  
Communications
!Circuit operation
Register map
< Data structure>
Address is upper 3bit in serial data, DATA is lower 8bit. (MSB first base)
Address
Data
D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
BU8763FV
Address
0 Operating
1 Mode
2 Frequency
3 Gain
Data
Initial
Data
Initial
Data
Initial
Data
Initial
D7
WAVE1
on/off
D6
WAVE2
on/off
D5
WAVE3
on/off
D4 D3
TNSEL FSEL
mode MOL/MF
D2
−
D1 D0
− SLEEP
00000001
WMODE[1:0] FLAVOR ENVON ENVM
WAVE GEN select wave on/off time
ATT123[2:0]
gain data
00
MLDY 0
DTMF 1
0
0
MLDY 1:001 2:100 3:000
DTMF 1:000 2:001 3:000
WFEQ[1:0]
WAVE GEN select
FREQ[5:0]
frequency data
00
MLDY 1:000000 2:000000 3:000000
DTMF 1:000000 2:000100 3:001000
−−−−
VOLUME[3:0]
0000
0000
4−7 Reserved
Address 0 : Wave generator select, MELODY / DTMF setting
Address
0
Bit
D7
Name
WAVE1
D6 WAVE2
D5 WAVE3
D4 TNSEL
D3 FSEL
D2−D1
D0
Reserved
SLEEP
Initial
0
0
0
0
0
00
1
State
WAVE1 control
0: output off
1: output on
WAVE2 control
0: output off
1: output on
WAVE3 control
0: output off
1: output on
Output select MELODY, DTMF/TONE
0: MELODY select
1: DTMF/TONE select
Register select MELODY, DTMF/TONE
0: MELODY select
1: DTMF/TONE select
Power down control
0: operating mode
1: power down mode
5/11
5 Page 
Communications
BU8763FV
!Note for use
1) WAVE1, WAVE2, WAVE3 register, ATT123 register (at melody output), ATT register, ENVON register are changed
when output is a zero cross.
2) FREQ [5:0] register is changed instantaneously.
3) In the case that unsound part is set up WAVE 1,2,3 register, wave is stopped with a zero cross.
when it changes FREQ[5:0] before becoming off with a zero cross, new frequency wave output one cycle.
After wait for to do off with a zero cross, change FREQ[5:0].
4) 3 sound resources can only the setting of all sine wave or all special square wave.
5) 3 sound resources can only the setting of all DTMF/TONE or all MELODY.
6) A data value of registration etc. is held at the time of SLEEP.
7) At the time of RESET, a data value of registration etc. becomes initial value.
8) Maximum output level (ATT=0dB) of one sound resource is 342.5mVrms (typ).
Set up each ATT123 sol that output levels of totals 3 sound resources does not exceed,
because a maximum output level of DAC is 2.00VPP (707.1mVrms).
9) TNSEL of address 0 D4 is a setting register about whether output which of DTMF or MELODY.
10) FSEL of address 0 D3 is a setting register about whether make the setting of FREQ etc.
which of DTMF or MELODY.
!External dimensions (Unit : mm)
5.0 ± 0.2
16 9
18
0.65 0.22 ± 0.1
0.3Min.
0.1
SSOP-B16
11/11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet BU8763FV.PDF ] | |
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