Digital Sound Processors for FPD TVs
32bit Audio DSP
BU9414FV
●General
Description
This LSI is the digital sound processor which made the use digital signal processing for FPD TVs.
DSP of ROHM original is used for the TV sound processor unit, and it excels in cost performance.
There are two digital input systems. An output is a digital output corresponding to 2.1ch.
●Features
■
Digital Signal Processor unit
Word length:
The fastest machine cycle:
Multiplier:
Adder:
Data RAM:
Coefficient RAM:
Sampling frequency:
Master clock :
No.12083EAT04
32bit (Data RAM)
40.7ns (512fs, fs = 48kHz)
32 x 24
→
56bit
32 + 32
→
32bit
256 x 32bit
128 x 24bit
fs = 48kHz
512fs (It is a slave to 256fs of fs = 48kHz, 44.1 kHz, and 32 kHz)
■
Digital signal input (Stereo 2 lines): 16/20/24bit(I2S, Left-Justified, Right-Justified)
Digital signal output (Stereo 2 lines): 16/20/24bit(I2S, Left-Justified, Right-Justified, S/PDIF)
■The
sound signal processing function for FPD TVs
2
Pre-Scaler, DC cut HPF, Channel Mixer, P Volume(Perfect Pure Volume), BASS, MIDDLE,
TREBLE, Pseudo BASS, Surround, P
2
Bass, P
2
Treble, 7Band Parametric EQ,
Master Volume, L/R balance, Post-Scaler, Output signal clipper
(P
2
Volume, P
2
Bass, and P
2
Treble are the sound effect functions of ROHM original.)
●Applications
Flat Panel TVs (LCD, Plasma)
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
1/57
2012.03 - Rev.A
BU9414FV
●Absolute
maximum rating（Ta=25°C）
Item
Symbol
Power-supply voltage
V
DD
Allowable dissipation
P
d
operating temperature range
T
opr
Storage temperature range
T
stg
*1： 7mW is decreased for 1°C when using it with Ta=25°C or more.
*Operation can’t be guaranteed.
●Operating
condition（Ta=-25½+85°C）
Item
Power-supply voltage
* It isn’t Radiation-proof designed for the product.
Technical Note
Rating
4.5
700 (*1)
-25½+85
-55½+125
Unit
V
mW
°C
°C
Symbol
V
DD
Rating
3.0½3.6
Unit
V
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© 2012 ROHM Co., Ltd. All rights reserved.
2/57
2012.03 - Rev.A
BU9414FV
●Electric
characteristic(Digital serial)
V
DD
=3.3V unless specified, Ta=25°C
Item
Hysteresis
H Level voltage
Input voltage
L Level voltage
Input current
Pull-up resistor input L current
Pull-down resistor input H current
H Level voltage
Output voltage
L Level voltage
SDA terminal
Output voltage
L Level voltage
Symbol
V
IH
V
IL
I
I
I
IL
I
IH
V
OH
V
OL
V
OL
Min.
2.5
-
-1
-150
35
2.75
-
-
Rating value
Standard
-
-
-
-100
70
-
-
-
Max.
-
0.8
+1
-50
105
-
0.55
0.4
Unit
V
V
µA
µA
µA
V
V
V
Technical Note
Terms
V
IN
=0½3.3V
V
IN
=0V
V
IN
=3.3V
I
O
=-0.6mA
I
O
=0.6mA
I
O
=3mA
Adaptive
terminal
*1,2,3
*1,2,3
*1
*2
*3
*4
*4
*5
Adaptive terminal
*1
CMOS hysteresis input terminal
SCLI(8pin), SDAI(9pin), MODE(20pin)
*2
Pull-up resistor built-in CMOS hysteresis input terminal
LRCKI(2pin), SDATA1(3pin), SDATA2(4pin), MCLK(39pin), BCKI(40pin)
*3
Pull-down resistor built-in CMOS hysteresis input terminal
RESETX(5pin), MUTEX_SP(6pin), MUTEX_DAC(7pin), ADDR(21pin)
*4
CMOS output terminal
SPDIFO(22pin), SDAO(28pin), SCLO(29pin), MUTEX_DACO(30pin), MUTEX_SPO(31pin),
RESETXO(32pin), DATAO2(33pin), DATAO1(34pin), LRCKO(35pin), BCKO(36pin), SYSCKO(37pin)
*5
Open drain output terminal
SDAI(9pin)
・Electric
characteristic(Analogue serial)
V
DD
=3.3V Unless specified, Ta=25°C,R
L
=10kΩ, V
C
standard
Rating Value
Item
Symbol
Min
Standard
whole
Circuit current
I
Q
-
15
Regulator part
Output voltage
V
REG
1.3
1.5
PLL part
Lock frequency
F
LK8
-
24.576
Max
30
1.7
-
Unit
mA
V
MHz
VDD
Object pin/Condition
I
O
=100mA
256fs(fs=48kHz) input
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
3/57
2012.03 - Rev.A
BU9414FV
●
Block diagram
MUTEX_DACO
MUTEX_SPO
SDATAO1
SDATAO2
SYSCLKO
RESETXO
LRCKO
Technical Note
BCKO
SDAO
SPDIFO
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
CLK
DSP
SP
Conv.
TEST
I2S
IF
Control
IF
I2C
IF
LDO15
PLLA
1
N.C.
2
LRCKI
3
SDATA1
4
SDATA2
5
RESETX
6
MUTEX_SP
7
MUTEX_DAC
8
SCLI
9
SDAI
10
VSS１
11
DVDDCORE
12
REG15
13
LDOPOFF
14
ANATEST
15
VDD
16
N.C.
17
N.C.
18
PLLFIL
19
VSS２
20
MODE
Fig.2
Block diagram
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© 2012 ROHM Co., Ltd. All rights reserved.
4/57
2012.03 - Rev.A
ADDR
MCLK
SCLO
VSS3
BCKI
N.C.
N.C.
N.C.
N.C.
N.C.
BU9414FV
●Pin
Description(s)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Name
N.C
LRCKI
SDATA1
SDATA2
RESETX
MUTEX_SP
MUTEX_DAC
SCLI
SDAI
VSS1
DVDDCORE
REG15
LDOPOFF
ANATEST
VDD
N.C
N.C
PLLFIL
VSS2
MODE
(*2)
I
2
S Audio LR signal input
I
2
S Audio data input 1
I
2
S Audio data input 2
Reset status with “L”
DAC mute signal input(*1)
SP mute signal input(*1)
I
2
C Forwarding clock input
I
2
C Data input output
Digital I/O GND
Connect to REG15 terminal
Built-in regulator voltage output
Built-in regulator POFF signal
input
Analog test monitor terminal
Digital I/O power supply
Description of terminals
Type
Technical Note
No.
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Name
ADDR
Description of terminals
Type
-
D
D
D
B
B
B
F
E
-
-
G
G
G
-
-
-
G
-
A
I
2
C Slave address selection B
terminal
C
SPDIFO
S/PDIF Signal output
-
N.C
-
N.C
-
N.C
-
N.C
-
N.C
C
SDAO
2 line serial data output（*1）
SCLO
2 line serial clock output（*1） C
C
MUTEX_DACO DAC mute signal output(*1)
C
MUTEX_SPO
SP mute signal output(*1)
C
RESETXO
Reset signal output(*1)
2
C
SDATAO2
I S Audio data output 2
I
2
S Audio data output 1
I
2
S Audio LR signal output 1
I
2
S Audio clock output 1
System clock output（*1）
Digital I/O GND
Master clock input
I
2
S Audio clock input
C
C
C
C
-
H
D
Filter connection terminal for PLL
Digital I/O GND
Test mode selection input
SDATAO1
LRCKO
BCKO
SYSCLKO
VSS3
MCLK
BCKI
N.C.：Non Connection
(*1)：signal terminal is used with D class amplifier IC (BD5446EFV etc.) for input I2S made by Rohm.
(*2)
：It
connects with the lead frame of a package. Please use by OPEN or GND connection.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
5/57
2012.03 - Rev.A
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