Datasheet Download

Middle Power Class-D Speaker Amplifier series
20W+20W
Full Digital Speaker Amplifier
with built-in DSP
B ass+
PERFECT PURE
BM5480MUV
General Description
Features
■
BM5480MUV is a Full Digital Speaker Amplifier with
built-in DSP (Digital Sound Processor) designed for
Flat-panel TVs in particular for space-saving and
low-power consumption, delivers an output power of
20W+20W. This IC employs Bipolar, CMOS, and
DMOS (BCD) process technology that eliminates
turn-on resistance in the output power stage and
internal loss due to line resistances up to an ultimate
level. With this technology, the IC can achieve high
efficiency. In addition, the IC is packaged in a compact
reverse heat radiation type power package to achieve
low power consumption and low heat generation and
eliminates necessity of external heat-sink up to a total
output power of 40W. This product satisfies both needs
for drastic downsizing, low-profile structures and many
function, high quality playback of sound system.
■
■
■
■
■
Key Specifications
10V to 26V
20W+20W (Typ)
■
0.07 [%] (Typ)
Applications
SP ch1
(Lch)
W(Min) x D(Typ) x H(Max)
7.00mm x 7.00mm x 1.00mm
VQFN48V7070P
μ -con
SDATA
SDB
ERROR
SDA
SCL
MUTEX
RSTX
OUT1P
VQFN48V7070P
Typical Application Circuit
SP ch2
(Rch)
OUT2N
Package
■
BCLK
Flat Panel TVs (LCD, Plasma)
Home Audio
Desktop PC
Amusement equipments
Electronic Music equipments, etc.
OUT1N
OUT2P
■
■
■
■
■
LRCLK
■ Supply voltage (VCC)
■ Speaker output power
(VCC=19V,RL=8Ω)
■ THD+N
This IC includes the DSP (digital sound processor)
for Audio signal processing for Flat TVs.
2
P Bass+( pseudo bass), 16 Band P-EQ,
Level DRC, 2 Band DRC, Surround, etc.
This IC has one input systems of digital audio
interface. (No needs of Master Clock)
2
- I S / LJ / RJ format
- LRCLK: 32k/44.1k/48KHz
- BCLK: 32fs / 48fs / 64fs
- SDATA: 16 / 20 / 24bit
With wide range of power supply voltage.
The monaural output that can reduce the number of
external parts can be used.
With high efficiency and low heat dissipation
contributing to miniaturization, slim design, and also
power saving of the system.
Eliminates pop-noise generated during the power
supply on/off. High quality muting performance is
realized by using the soft-muting technology.
This IC is built-in with various protection functions
for highly reliability design.
- High temperature protection
- Over voltage protection, Under voltage protection
- Output short protection
- DC voltage protection
- Clock stop protection
Small package
Digital
Audio
Source
Figure 1. Typical application circuit
〇Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
〇This product has no designed protection against radioactive rays
1/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Pin configuration and Block diagram
1
NC
3
NC
5
47
46
45
44
43
42
41
NC
NC
NC
NC
NC
NC
NC
NC
40
39
37
36
VCCP1
OUT1P
35
Driver
FET 1P
RSTX
MUTEX
38
REG_G VCCA
NC
2
4
48
34
GNDP1
Driver
FET 1N
Control
I/F
33
32
OUT1N
DGND
8 Times
OverSampling
Digital
Filter
6
7
SCL
8
SDA
9
ADDR
10
SDATA
11
12
LRCLK
Audio
DSP
2-wire
I/F
31
PWM
Modulator
30
OUT2P
29
Driver
FET 2P
BCLK
TEST1
13
14
27
26
OUT2N
VCCP2
TEST2 DVDD
MONI
16
NC
18
17
25
TEST3
PLL
15
GNDP2
ERROR
PLL
VSS
REG15
Driver
FET 2N
Protection
I2S
LJ
RJ
I/F
28
19
20
21
22
23
24
Figure 2. Pin configuration and Block diagram (Top View)
Pin Description
No.
Name
I/O
No.
Name
I/O
No.
Name
I/O
No.
Name
I/O
1
NC
-
13
REG15
O
25
OUT2N
O
37
VCCP1
-
2
NC
-
14
TEST1
I
26
OUT2N
O
38
VCCP1
-
3
NC
-
15
VSS
-
27
GNDP2
-
39
VCCA
-
4
RSTX
I
16
TEST2
O
28
GNDP2
-
40
REG_G
O
5
MUTEX
I
17
DVDD
-
29
OUT2P
O
41
NC
-
6
DGND
-
18
PLL
O
30
OUT2P
O
42
NC
-
7
SCL
I
19
MONI
I/O
31
OUT1N
O
43
NC
-
8
SDA
I/O
20
TEST3
I
32
OUT1N
O
44
NC
-
9
ADDR
I
21
ERROR
O
33
GNDP1
-
45
NC
-
10
SDATA
I
22
NC
-
34
GNDP1
-
46
NC
-
11
LRCLK
I
23
VCCP2
-
35
OUT1P
O
47
NC
-
12
BCLK
I
24
VCCP2
-
36
OUT1P
O
48
NC
-
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
2/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Absolute Maximum Ratings (Ta=25°C)
Item
Symbol
VCC
DVDD
Supply voltage
Power dissipation
Pd
Input voltage 1
VIN1
Terminal voltage 1
Terminal voltage 2
Operating temperature range
Storage temperature range
Maximum junction temperature
VPIN1
VPIN2
Topr
Tstg
Tjmax
Limit
-0.3 to +30
-0.3 to +4.5
4.30
4.80
-0.3 to
DVDD+0.3
-0.3 to +7.0
-0.3 to +30
-25 to +85
-55 to +150
150
Unit
V
V
W
W
Conditions
Pin 23,24,37,38, 39
Pin 17
(Note 1),(Note 2)
(Note 1)
(Note 3)
(Note 4)
(Note 1)
V
Pin 4, 5, 7 - 12, 14, 16, 19, 20, 21
V
V
°C
°C
°C
Pin 40
(Note 1),(Note 6)
Pin 25, 26, 29, 30, 31, 32, 35, 36
(Note 1)
(Note 1) The voltage that can be applied reference to GND (Pin 1, 6, 15, 27, 28, 33, and 34).
(Note 2) Do not, however exceed Pd and Tjmax=150°C.
(Note 3) 74.2mm × 74.2mm × 1.6mm, FR4, 4-layer glass epoxy board (Copper area 34.09mm2)
Derating in done at 34.4 mW/°C for operating above Ta=25°C. There are thermal via on the board.
(Note 4) 74.2mm × 74.2mm × 1.6mm, FR4, 4-layer glass epoxy board (Copper area 5505mm2)
Derating in done at 38.4 mW/°C for operating above Ta=25°C. There are thermal via on the board.
(Note 6) It should use it below this ratings limit including the AC peak waveform (overshoot) for all conditions.
At only undershoot, it is admitted using at ≦10nse and ≦30V by the VCC reference. (Please refer following figure.)
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open
circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC
is operated over the absolute maximum ratings.
VCC
Overshoot to GND
30V (Max.)
Undershoot to VCC
30V(Max.)
GND
≦10nsec
Figure 3
Recommended Operating Ratings (Ta=25°C)
Item
Supply voltage
Minimum load impedance 1
Symbol
VCC
DVDD
Limit
10 to 26
3 to 3.6
Unit
V
V
5.4
Ω
3.6
Ω
RL1
Conditions
(Note 1),(Note 2)
Pin 23,24,37,38, 39
(Note 1)
Pin 17
Pin 25, 26, 29, 30, 31, 32, 35, 36
(Note 7)
VCC = 18V to 26V
Pin 25, 26, 29, 30, 31, 32, 35, 36
(Note 7)
VCC < 18V
(Note 7) Do not, however exceeds Pd.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
3/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Electrical Characteristics
(Unless otherwise specified Ta=25°C, VCC=18V, DVDD=3.3V, RSTX=3.3V, MUTEX=3.3V, f=1 kHz,
RL1=8Ω, DSP: Through, fs=48 kHz, MCLK=256fs, Snubber circuit for output terminal: R=5.6Ω, C=1200pF)
Item
Total circuit
Circuit current 1
(Normal mode)
Circuit current 2
(Reset mode)
Open-drain terminal
Low level voltage
Regulator output voltage 1
Regulator output voltage 2
High level input voltage
Low level input voltage
Input current
(Input pull-up terminal)
Input current
(Input pull-down terminal)
Input current
(SCL, SDA terminal)
Input current
(SCL, SDA terminal)
Speaker amplifier output
Maximum output power 1
Maximum output power 2
Total harmonic distortion 1
Crosstalk 1
Output noise voltage 1
PWM sampling frequency
Min
Limit
Typ
Max
ICC1
IDD1
-
45
20
90
40
mA
mA
ICC2
-
100
200
μA
IDD2
-
2.5
7.0
mA
VERR
-
-
0.8
V
Pin 21, IO=0.5mA
VREG_G
VREG15
VIH
VIL
4.2
1.3
2.5
0
5.1
1.5
-
5.6
1.7
3.3
0.8
V
V
V
V
Pin 40
Pin 13
Pin 4, 5, 7 - 12, 14, 16, 19, 20, 41
Pin 4, 5, 7 - 12, 14, 16, 19, 20, 41
IUP
-150
-100
-50
μA
Pin 10 – 12, 19, VIN = 0V
IDN
35
70
105
μA
Pin 4, 5, 9, VIN = 3.3V
IIL
-1
0
-
μA
Pin 7, 8, VIN = 0V
IIH
-
0
1
μA
Pin 7, 8, VIN = 3.3V
PO1
PO2
THD1
CT1
VNO1
fPWM1
fPWM2
fPWM3
60
-
10
20
0.07
80
80
256
352.8
384
-
W
W
%
dB
μVrms
kHz
kHz
kHz
Symbol
Unit
Conditions
Pin 23,24,37,38,39, No load
Pin 17, -∞dBFS input, No load
Pin 23,24,37,38,39, No load
RSTX=0V, MUTEX=0V, SDB=0V
Pin 17, -∞dBFS input, No load
RSTX=0V, MUTEX=0V, SDB=0V
VCC=13.5V,THD+n=10%
VCC=19V,THD+n=10%
PO=1W, BW=20 to 20kHz(AES17)
VCC=13.5V, PO=1W, BW=IHF-A
-∞dBFS input, BW=IHF-A
fs=32 kHz
fs=44.1 kHz
fs=48 kHz
(Note 8)
(Note 8)
(Note 8)
(Note 8)
(Note 8)
(Note 8)
(Note 8)
(Note 8)
(Note 8) These items show the typical performance of device and depend on board layout, parts, and power supply.
The standard value is in mounting device and parts on surface of ROHM’s board directly.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
4/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Typical Performance Curves
Speaker output(Ta=25°C, VCC=18V, DVDD=3.3V, RSTX=0V/3.3V, MUTEX=0V/3.3V, f=1 kHz, DSP: Through, fs=48 kHz,
MCLK=256fs,Snubber circuit for output terminal: [8Ω] R=5.6Ω, C=1200pF, [6,4Ω] R=5.6Ω, C=3300pF)
Measured by ROHM designed 4 layer board.
0.10
70
RSTX=MUTEX=L
RL=8Ω
No Signal
0.09
RSTX=H
RL=8Ω
No Signal
60
0.08
50
0.06
ICC [mA]
ICC [mA]
0.07
0.05
0.04
0.03
MUTEX=H
40
30
20
0.02
10
MUTEX=L
0.01
0.00
0
8
10
12
14
16
18 20
VCC [V]
22
24
26
28
8
10
12
14
16
18 20
VCC [V]
22
24
26
28
Figure 5
Power supply voltage- Current consumption
Figure 4
Power supply voltage- Current consumption
4.0
100
RL=8Ω
90
3.5
RL=6Ω
80
3.0
RL=6Ω
2.5
60
ICC [A]
Efficiency [%]
RL=4Ω
RL=4Ω
70
50
40
2.0
RL=8Ω
1.5
30
1.0
20
0.5
10
VCC=13.5V
VCC=13.5V
0.0
0
0
5
10
15
20
5
10
15
20
Output Power [W/CH]
Output Power [W/CH]
Figure 6
Figure 7
Output power - Efficiency
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
0
Output power - Current consumption
5/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Typical Performance Curves
Speaker output(Ta=25°C, VCC=18V, DVDD=3.3V, RSTX=0V/3.3V, MUTEX=0V/3.3V, f=1 kHz, DSP: Through, fs=48 kHz,
MCLK=256fs,Snubber circuit for output terminal: [8Ω] R=5.6Ω, C=1200pF, [6,4Ω] R=5.6Ω, C=3300pF)
Measured by ROHM designed 4 layer board.
RL=8Ω
Po=1W
RL=8Ω
Po=1W
Speaker output
Speaker output
MUTEX(5pin)
MUTEX(5pin)
Figure 8
Figure 9
Waveform at soft mute
Waveform at soft start
30
3
RL=8Ω
RL=8Ω
VCC=26V
2.5
25
2
20
ICC [A]
Output Power [W/CH]
VCC=18V
THD+N=10%
THD+N=1%
15
1.5
10
1
5
0.5
0
0
8
10
12
14
16
18
20
22
VCC=10V
0
24
5
10
15
20
25
30
VCC [V]
Output Power [W/CH]
Figure 10
Output voltage - Power voltage (RL1=8Ω)
Figure 11
Output power - Current consumption (RL1=8Ω)
※Dotted line means internal dissipation is over package power.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
6/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Typical Performance Curves
Speaker output (Ta=25°C, VCC=18V, DVDD=3.3V, RSTX=0V/3.3V, MUTEX=0V/3.3V, f=1 kHz, DSP: Through, fs=48 kHz,
MCLK=256fs,Snubber circuit for output terminal: [8Ω] R=5.6Ω, C=1200pF, [6,4Ω] R=5.6Ω, C=3300pF)
Measured by ROHM designed 4 layer board.
35
3.5
RL=6Ω
RL=6Ω
THD+N=10%
25
VCC=18V
2.5
20
THD+N=1%
15
VCC=10V
2
1.5
10
1
5
0.5
0
0
8
10
12
14
16
18
20
22
24
0
5
10
15
20
25
30
VCC [V]
Output Power [W/CH]
Figure 12
Output voltage - Power voltage (RL1=6Ω)
Figure 13
Output power - Current consumption (RL1=6Ω)
40
3.5
RL=4Ω
RL=4Ω
35
VCC=18V
3
THD+N=10%
30
VCC=26V
2.5
25
ICC [A]
Output Power [W/CH]
VCC=26V
3
ICC [A]
Output Power [W/CH]
30
THD+N=1%
20
VCC=10V
2
1.5
15
1
10
0.5
5
0
0
8
10
12
14
16
18
20
22
24
0
5
VCC [V]
10
15
20
25
30
Output Power [W/CH]
Figure 15
Output power - Current consumption (RL1=4Ω)
Figure 14
Output Voltage – Power Voltage (RL1=4Ω)
※Dotted line means internal dissipation is over package power.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
7/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Typical Performance Curves
Speaker output(RL1=8Ω, Ta=25°C, VCC=18V, DVDD=3.3V, RSTX=3.3V, MUTEX=3.3V, f=1 kHz, DSP: Through, fs=48 kHz,
MCLK=256fs, Snubber circuit for output terminal: R=5.6Ω, C=1200pF)
Measured by ROHM designed 4 layer board.
0
30
No Signal
B.W. none
RL1=8Ω
OUT1
OUT2
-20
Po=1W
B.W. none
RL1=8Ω
25
Voltage Gain [dB]
-40
Noise FFT [dBV]
OUT1
OUT2
-60
-80
-100
20
15
-120
-140
10
10
100
1k
10k
100k
10
100
Figure 16
FFT of output noise voltage
10
1k
10k
100k
Freq [Hz]
Freq [Hz]
Figure 17
Frequency – Output power
10
f=1kHz
f=100Hz
f=6kHz
B.W. 20 to 20kHz
AES17
RL1=8Ω
OUT1
OUT2
B.W. 20 to 20kHz
AES17
Po=1W
RL1=8Ω
1
THD+N [%]
THD+N [%]
1
0.1
0.1
0.01
0.01
0.01
0.1
1
10
10
100
1k
10k
100k
Freq [Hz]
Po [W]
Figure 18
Figure 19
Frequency - THD+N
Output Power - THD+N
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
100
8/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Typical Performance Curves
Speaker output (RL1=8Ω, Ta=25°C, VCC=18V, DVDD=3.3V, RSTX=3.3V, MUTEX=3.3V, f=1 kHz, DSP: Through, fs=48 kHz,
MCLK=256fs, Snubber circuit for output terminal: R=5.6Ω, C=1200pF)
Measured by ROHM designed 4 layer board.
0
-10
-20
Po=1W
RL1=8Ω
Crosstalk [dB]
-30
-40
-50
-60
-70
-80
-90
-100
10
100
1k
10k
100k
Freq [Hz]
Figure 20
Frequency - Crosstalk
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
9/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Typical Performance Curves
Speaker output (RL1=6Ω, Ta=25°C, VCC=18V, SVDD=3.3V, RSTX=3.3V, MUTEX=3.3V, f=1 kHz, DSP: Through, fs=48 kHz,
MCLK=256fs, Snubber circuit for output terminal: R=5.6Ω, C=3300pF)
Measured by ROHM designed 4 layer board.
0
OUT1
OUT2
30
No Signal
B.W. none
RL1=6Ω
-20
Po=1W
B.W. none
RL1=6Ω
25
Voltage Gain [dB]
-40
Noise FFT [dBV]
OUT1
OUT2
-60
-80
-100
20
15
-120
-140
10
10
10
100
1k
10k
100k
10
100
1k
10k
Freq [Hz]
Freq [Hz]
Figure 21
FFT of output noise voltage
Figure 22
Frequency – Output power
100k
10
f=1kHz
f=100Hz
f=6kHz
B.W. 20 to 20kHz
AES17
RL1=6Ω
OUT1
OUT2
B.W. 20 to 20kHz
AES17
Po=1W
RL1=6Ω
1
THD+N [%]
THD+N [%]
1
0.1
0.1
0.01
0.01
0.01
0.1
1
10
10
100
1k
10k
100k
Freq [Hz]
Po [W]
Figure 23
Output Power - THD+N
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
100
Figure 24
Frequency - THD+N
10/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Typical Performance Curves
Speaker output (RL1=6Ω, Ta=25°C, VCC=18V, SVDD=3.3V, RSTX=3.3V, MUTEX=3.3V, f=1 kHz, DSP: Through, fs=48 kHz,
MCLK=256fs, Snubber circuit for output terminal: R=5.6Ω, C=3300pF)
Measured by ROHM designed 4 layer board.
0
Po=1W
RL1=6Ω
-10
-20
Crosstalk [dB]
-30
-40
-50
-60
-70
-80
-90
-100
10
100
1k
10k
100k
Freq [Hz]
Figure 25
Frequency - Crosstalk
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
11/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Typical Performance Curves
Speaker output (RL1=4Ω, Ta=25°C, VCC=18V, DVDD=3.3V, RSTX=3.3V, MUTEX=3.3V, f=1 kHz, DSP: Through, fs=48 kHz,
MCLK=256fs, Snubber circuit for output terminal: R=5.6Ω, C=3300pF)
Measured by ROHM designed 4 layer board.
0
OUT1
OUT2
30
No Signal
B.W. none
RL1=4Ω
-20
Po=1W
B.W. none
RL1=4Ω
25
Voltage Gain [dB]
-40
Noise FFT [dBV]
OUT1
OUT2
-60
-80
-100
20
15
-120
-140
10
10
10
100
1k
10k
100k
10
100
1k
10k
Freq [Hz]
Freq [Hz]
Figure 26
FFT of output noise voltage
Figure 27
Frequency – Output power
100k
10
f=1kHz
f=100Hz
f=6kHz
B.W. 20 to 20kHz
AES17
RL1=4Ω
OUT1
OUT2
B.W. 20 to 20kHz
AES17
Po=1W
RL1=4Ω
1
THD+N [%]
THD+N [%]
1
0.1
0.1
0.01
0.01
0.01
0.1
1
10
10
100
1k
10k
100k
Freq [Hz]
Po [W]
Figure 29
Output Power - THD+N
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
100
Figure 28
Frequency - THD+N
12/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Typical Performance Curves
Speaker output (RL1=4Ω, Ta=25°C, VCC=18V, DVDD=3.3V, RSTX=3.3V, MUTEX=3.3V, f=1 kHz, DSP: Through, fs=48 kHz,
MCLK=256fs, Snubber circuit for output terminal: R=5.6Ω, C=3300pF)
Measured by ROHM designed 4 layer board.
0
Po=1W
RL1=4Ω
-10
-20
Crosstalk [dB]
-30
-40
-50
-60
-70
-80
-90
-100
10
100
1k
10k
100k
Freq [Hz]
Figure 30
Frequency - Crosstalk
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
13/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Digital Block Functional Overview
No.
1
Input1
Function
DC cut HPF
2
Pre-scalar
3
Channel Mixer
4
LEVEL DRC
5
Surround
6
P Bass+
(Perfect Pure Bass+)
7
16-Band
Parametric Equalizer
8
Fine Master Volume
9
Balance
10
2 Band DRC
11
Post-Scalar
12
Fine Post-Scalar
13
DC cut HPF
14
Clipper
2
I2S
LJ
RJ
DC cut
HPF
Pre
Chanel
Scaler
Mixer
Specifications
st
・1 order HPF
・Fc : 1Hz
・Lch / Rch become same set point.
・+48dB to -79dB (0.5dB step),-∞dB
・default 0dB
・Lch <= Mute, Lch(default), Rch, (L+R)/2, L-R
・Rch <= Mute, Lch, Rch(default), (L+R)/2, L-R
・Lch/Rch are independent phase reversal control available.
・When the small signal is detected continuously during the fixed time, this function is
soft mute transition.
・There is soft transition function.
・LEVEL DRC Detect level : -30dB to -96dB,12step
・Soft MUTE transition time : 0.125sec to 8sec,16step
・MUTE release time : 1msec to 40msec,8step
・Emphasizes the stereo.
・There is a pseudo-stereo effect.(Add a stereo to mono sound)
・This function make pseudo bass sound with the speaker which cannot make low
frequency sound.
・Generation frequency : 68Hz to 1200Hz, 16step
・Parametric Equalizer has built-in coefficient calculation circuit.
・Only 4 factors is required.(Frequency/Gain/Quality factor/Filter type)
・The Filter types which can be selected is
Peaking/Low-shelf/High-shelf/Low-pass/High-pass/All-pass.
・Lch/Rch become same set point. There is soft transition function.
・The set point of F0: Divide between into 61 from 20 Hz to 20 kHz.
・The set point of Gain: ±18dB (0.5dB step)
・A big gain may be unable to be set up when exceeding the factor span of DSP (±4)
at the time of a gain selecting.
・Q(Quality factor) : 0.33 to 8.2, 29step.
・It is also possible to set up a factor directly.
・Lch / Rch become same set point.
・+24dB to -103dB (0.125dB step),-∞dB
・There is soft transition function.
・1dB step
・There is soft transition function.
(Lch/Rch:0dB/-∞dB,0dB/-126dB,0dB/-125dB,・・,0dB/0dB,・・,-125dB/0dB,
-126dB/0dB,-∞dB/0dB)
・Non clip output is achieved.
・Lch/Rch becomes the same control.
・Low-pass and a high region become an independent control.
・Threshold level : +12dB to -32dB (0.5dB step)
・The set point of Cross-over frequency : Divide between into 61 from 20 Hz to
20 kHz.
・The voice below the set-up detect level is decreased gently.
・Lch / Rch become same set point.
・+48dB to -79dB (0.5dB step),-∞dB
・Lch / Rch become independent set point.
・+0.7dB to -0.8dB (0.1dB step)
st
・1 order HPF
・Fc : 1Hz
・Lch / Rch become same set point.
・Clip level : +3dB to 22.5dB (-0.1dB step)
Level
DRC
Surround
P2Bass+
16Band
/ch BQ
Fine
Master
Volume
Balance
2Band
DRC
Post
Scaler
Fine
Master
Volume
DC cut
HPF
Hard
Clipper
Main
Figure 31. DSP Block diagram
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
14/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
RSTX pin, MUTEX pin function
RSTX
(4pin)
MUTEX
(5pin)
DSP block
condition
L
L
Reset ON
H
L
H
H
L
H
Speaker output
condition
HiZ_Low
(Low consumption)
HiZ_Low
(Mute ON)
Normal operation
(Mute OFF)
Normal operation
(Mute ON)
Normal operation
(Mute OFF)
Don’t use.
※RSTX is set Low, internal registers are initialized.
※VCCP1, VCCP2< 2.5V, IC latched by protection circuit and ERROR terminal condition are initialized.
※If DVDD is under 3V, RSTX is set Low once for 10ms(min), and set High again. Then DSP is needed to set parameter again.
Input Digital sound sampling frequency (fs) explanation
PWM sampling frequency of Speaker output and Soft-mute transition time depends on sampling frequency (fs) of the digital
sound input. These transition times are changed by sending select address &h15 [1:0].
Sampling frequency
of the Digital sound input (fs)
48kHz
44.1kHz
32 kHz
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Soft-mute Transition time
Speaker output
PWM sampling frequency
Mute ON
Mute OFF
384kHz
85.4msec
42.7msec
21.4msec
10.7msec
10.7msec
10.7msec
10.7msec
10.7msec
92.9msec
46.5msec
23.3msec
11.7msec
11.7msec
11.7msec
352.8kHz
256kHz
15/94
11.7msec
11.7msec
128.1msec
64.1msec
32.1msec
16.1msec
16.1msec
16.1msec
16.1msec
16.1msec
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
2 wire Bus control signal specification
1) Electrical characteristics and Timing of Bus line and I/O stage
SDA
tBUF
tF
tLOW
tHD;STA
tR
SCL
tHD;STA
P
tHD;DAT
tHIGH
tSU;DAT
tSU;STA
S
tSU;STO
Sr
P
Figure 32
SDA and SCL bus line characteristics (Unless otherwise specified Ta=25°C, VCC=13V)
High speed mode
Parameter
Symbol
Min
Max
1
SCL clock frequency
fSCL
0
400
Bus free time between「Stop」condition and「Start」
-
2
tBUF
1.3
condition
Hold-time of (sending again)「Start」condition. After this
-
3
tHD;STA
0.6
period the first clock pulse is generated.
SCL clock’s LOW state Hold-time
4
tLOW
1.3
-
SCL clock’s HIGH state Hold-time
-
5
tHIGH
0.6
6
Set-up time of sending again「Start」condition
tSU;STA
0.6
-
(Note 1)
Data hold time
-
7
tHD;DAT
0
(Note 2)
-
8
Data set-up time
tSU;DAT
500/250/150
9
Rise-time of SDA and SCL signal
tR
20+0.1Cb
300
10
Fall-time of SDA and SCL signal
tF
20+0.1Cb
300
Set-up time of 「Stop」condition
-
11
tSU;STO
0.6
Capacitive load of each bus line
12
Cb
-
400
Unit
kHz
μS
μS
μS
μS
μS
μS
ns
ns
ns
μS
pF
The above-mentioned numerical values are all the values corresponding to VIH min and the VIL max level.
(Note 1) To exceed an undefined area on the fall-edge of SCL (VIH min of the SCL signal), the transmitting set should internally
offer the holding time of 300ns or more for the SDA signal.
(Note 2) SCL and SDA pin is not corresponding to threshold tolerance of 5V.
Please use it within 4.5V of the absolute maximum rating.
2) Command interface
2 wire Bus control is used for command interface between hosts CPU. It not only writes but also it is possible to read it
excluding a part of register. In addition to “Slave Address “ , set and write 1 byte of “Select Address “ to read out the
data. 2 wire buses Slave mode format is illustrated below.
S
MSB
LSB
MSB
LSB
MSB
Slave Address
A
Select Address
A
LSB
Data
A
P
S : Start Condition
Slave Address : The data of eight bits in total is sent putting up bit of Read mode (H) or Write mode (L) after slave
address (7bit) set with the terminal ADDR. (MSB first)
A : The acknowledge bit adds to data that the acknowledge is sent and received in each byte.
When data is correctly sent and received, “L” is sent and received.
There was no acknowledgement for “H”.
Select Address :The select address in one byte is used.(MSB first)
Data : Data byte is sent and received data(MSB first)
P : Stop Condition
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
16/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
MSB
SDA
6
5
LSB
SCL
Start Condition
SDA↓ SCL=”H”
3) Slave Address
Stop condition
SDA↑ SCL=”H”
Figure 33
・While ADDR pin is “L”
MSB
A6
A5
1
0
A4
0
A3
0
A2
0
A1
0
A0
0
LSB
R/W
1/0
・While ADDR pin is “H”
MSB
A6
A5
1
0
A4
0
A3
0
A2
0
A1
0
A0
1
LSB
R/W
1/0
4) Writing of data
・Basic format
S
Slave Address
A
Select Address
A
Data
A
P
: Master to Slave,
: Slave to Master
・Auto-increment format
S
Slave Address
A
Select Address
A
Data 1
A
Data 2
: Master to Slave,
A
Data 3…N
A
P
: Slave to Master
5) Reading of data
First of all, the address (20h in the example) for reading is written in the register of the D0h address at the time of reading.
In the following stream, data is read after the slave address. Please do not return the acknowledge when you end the
reception.
S
Slave Address
(ex.)
80h
A
Req_Addr
D0h
S
Slave Address
(ex.)
81h
A
Data 1
**h
: Master to Slave,
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
A
A
Select Address
20h
Data 2
**h
A
A
P
A
Data N
**h
Ā
P
: Slave to Master,A:With Acknowledge,Ā:Without Acknowledge
17/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Format of digital audio input
・LRCLK: It is L/R clock input signal.
It corresponds to 32kHz/44.1kHz/48kHz with those clocks (fs) that are same to the sampling frequency (fs).
The audio data of a left channel and a right channel for one sample is input to this section.
・BCLK: It is Bit Clock input signal.
It is used for the latch of data in every one bit by sampling frequency’s 48 times frequency (48fs) or 64 times sampling
frequency (64fs). However if the 48fs being selected, the input will be Right-justified data format and held static.
・SDATA: It is Data input signal.
It is amplitude data. The data length is different according to the resolution of the input digital data.
It corresponds to 16/ 20/ 24 bit.
The digital input has I2S, Left-justified and Right-justified formats.
The figure below shows the timing chart of each transmission mode.
Bit clock 64fs
I2S 64fs Format
LRCLK
Left Channel
Right Channel
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
BCLK
MSB
SDATA
LSB
MSB
LSB
S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
16bit Mode
16bit Mode
20bit Mode
20bit Mode
24bit Mode
24bit Mode
Left-Justified 64fs Format
LRCLK
Left Channel
Right Channel
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
BCLK
MSB
LSB
SDATA S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MSB
LSB
S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
16bit Mode
16bit Mode
20bit Mode
20bit Mode
24bit Mode
24bit Mode
Right-Justified 64fs Format
LRCLK
Left Channel
Right Channel
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
BCLK
MSB
SDATA
LSB
S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
16bit Mode
MSB
LSB
S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
16bit Mode
20bit Mode
20bit Mode
24bit Mode
24bit Mode
Figure 34
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
18/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Bit clock 48fs
I2S 48fs Format
LRCLK
Left Channel
Right Channel
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 1
BCLK
MSB
SDATA
LSB
MSB
LSB
S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
16bit Mode
16bit Mode
20bit Mode
20bit Mode
24bit Mode
24bit Mode
Left-Justified 48fs Format
LRCLK
Left Channel
Right Channel
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
BCLK
MSB
LSB
SDATA S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MSB
LSB
S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
16bit Mode
16bit Mode
20bit Mode
20bit Mode
24bit Mode
24bit Mode
Right-Justified 48fs Format
LRCLK
Left Channel
Right Channel
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
BCLK
MSB
SDATA
LSB
MSB
S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LSB
S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
16bit Mode
16bit Mode
20bit Mode
20bit Mode
24bit Mode
24bit Mode
Figure 35
Bit clock 32fs
I2S 32fs Format
LRCLK
Left Channel
Right Channel
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1
BCLK
MSB
SDATA
LSB MSB
LSB
S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
16bit Mode
16bit Mode
Left-Justified 32fs Format
LRCLK
Left Channel
Right Channel
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
BCLK
MSB
LSB MSB
LSB
SDATA S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
16bit Mode
16bit Mode
Right-Justified 32fs Format
LRCLK
Left Channel
Right Channel
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
BCLK
MSB
LSB MSB
LSB
SDATA S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 S 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
16bit Mode
16bit Mode
Figure 36
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
19/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Format setting for Digital Audio Interface
Please set Bit clock fs, Data strength and Format by transmitting command according to inputted Digital Serial Audio
signal.
Bit clock
Default = 0
Select Address
&h03[ 5:4 ]
Value
0
64fs
Explanation of operation
1
48fs
2
32fs
Data Format
Default = 0
Select Address
&h03[ 3:2 ]
Value
0
Explanation of operation
IIS format
1
Left-justified format
2
Right-justified format
Data strength
Default = 2
Select Address
&h03[ 1:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Value
0
Explanation of operation
16 bit
1
20 bit
2
24 bit
20/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Audio Interface format and timing
Recommended timing and operating conditions (BCLK, LRCLK, SDATA)
1/fLRCLK
LRCLK
1/fBCLK
BCLK
Figure 37. Clock timing
LRCLK
tHD;LR
tSU;LR
BCLK
tHD ; SD
tSU ; SD
SDATA
Figure 38. Audio Interface timing
No.
1
2
3
4
5
6
7
8
Parameter
LRCLK frequency
BCLK frequency
(Note 1)
Setup time, LRCLK
(Note 1)
Hold time, LRCLK
Setup time, SDATA
Hold time, SDATA
LRCLK, DUTY
BCLK, DUTY
Symbol
fLRCLK
fBCLK
tSU;LR
tHD;LR
tSU;SD
tHD;SD
dLRCLK
dBCLK
Limit
Min.
32
2.048
20
20
20
20
40
40
Max.
48
3.072
-
-
-
-
60
60
Unit
kHz
MHz
ns
ns
ns
ns
%
%
(Note 1) This regulation is to keep rising edge of LRCK and rising edge of BCLK from overlapping.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
21/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Power supply start-up sequence
V
*Important precaution for Ramp up procedure
Ramp up speed of VCCP1 and VCCP2 must be less than ΔV/ΔT=7(V/msec).If ramp up
speed of VCCP1 and VCCP2 exceeds this time, there is a possibility of malfunction of short
detection circuit.
Under this condition, start up with output terminal grounding may cause destruction.
ΔV
ΔT
① Power up VCCP1, VCCP2 simultaneously.
VCCP1
VCCP2
VCCP1,VCCP2
Time(msec)
VCCP1,VCCP2
DVDD
t
DVDD
④ Please refer to chapter 8.
You must input these signal before operating
chapter8 step4.
You can input any time before this timing.
BCLK
LRCLK
SDATA
t
More than 10ms
RSTX
② After DVDD rises and 10 or more
msec passes, please set RSTX to H.
t
③ After RSTX rises and 1 or more
msec passes, please send I2C
command.
More than 1ms
SCL
SDA
t
⇒Start data transmission
MUTEX
⑤ Set MUTEX to High.
t
OUT1P
OUT1N
OUT2P
OUT2N
t
Soft-start
Speaker
BTL output
(After LC filter)
t
Figure 39
※To avoid POP noise or canceling error protection of IC, please set RSTX is L⇒H before MUTEX is L⇒H regularly.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
22/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Power supply shut-down sequence
VCCP1
VCCP2
⑥Power down VCCP1, VCCP2 simultaneously.
VCCP1, VCCP2
DVDD
t
Please don’t stop I2S data before
complition of mute transition
BCLK
LRCLK
SDATA
t
① Set MUTEX=L.
MUTEX
t
SCL
SDA
t
② After the complition of a mute
transition, set RSTX=L
RSTX
t
OUT1P
OUT1N
OUT2P
OUT2N
t
Please reffer to soft mute transition time
t
Speaker
BTL output
(After LC filter)
Figure 40
※To avoid POP noise or canceling error protection of IC, please set MUTEX is H⇒L and keep mute transition time
before RSTX is H⇒L regularly.
※To avoid POP noise, please set RSTX is H⇒L time before DVDD Power down.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
23/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
About the protection function
Protection
function
Detecting & Releasing condition
Speaker
PWM output
ERROR
output
Output short
protection
Detecting
condition
Detecting current = 7.2A (TYP.)
HiZ_Low
(Note 1)
(Latch)
L
(Latch)
DC voltage
protection
Detecting
condition
PWM output Duty=0% or 100%
for 12μsec(TYP)and over
HiZ_Low
(Note 1)
(Latch)
L
(Latch)
High
temperature
protection
Detecting
condition
Releasing
condition
Under voltage
protection
Over voltage
protection
Clock stop
protection
Chip temperature to be above 150°C (TYP.)
HiZ_Low
Chip temperature to be below 120°C (TYP.)
Normal
operation
Power supply voltage to be below 8.1V (TYP.)
HiZ_Low
Releasing
condition
Power supply voltage to be above 9.1V (TYP.)
Normal
operation
Detecting
condition
Power supply voltage to be above 29.5V (TYP.)
HiZ_Low
Power supply voltage to be below 28.5V (TYP.)
Normal
operation
Detecting
condition
H
H
H
Releasing
condition
Detecting
condition
Releasing
condition
BCLK signal have stopped among constant period.
LRCLK signal have stopped among constant
period.
BCLK frequency is under constant value.
BCLK frequency is over constant value.
※Please refer to chapter 6 about constant value.
LRCLK signal haven’t stopped among constant
period and BCLK continues 30 or more msec of
condition within constant frequency.
HiZ_Low
H
Normal
operation
* The ERROR pin is Nch open-drain output.
(Note 1) Once an IC is latched, the circuit is not released automatically even after an abnormal status is removed.
The following procedures ① or ② is available for recovery.
①After MUTEX pin is made Low once over the soft mute transition time, MUTEX pin is returned to High again.
②Turning on the power supply again (VCCP1, VCCP2<2.5V, 10ms(min)).
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
24/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
1) Output short protection (Short to the power supply)
This IC has the output short protection circuit that stops the PWM output when the PWM output is short-circuited to the
power supply due to abnormality.
Detecting condition - It will detect when MUTEX pin is set High and the current that flows in the PWM output pin
becomes 7.2A(TYP.) or more. The PWM output instantaneously enters the state of HiZ-Low if
detected, and IC does the latch.
Releasing method - ①After MUTEX pin is set Low once over the soft mute transition time(see page 23/106), MUTEX
pin is returned to High again.
②Turning on the power supply again (VCCP1, VCCP2<2.5V, 10ms(min)).
Short to VCC
Release from short to VCC
OUT1P (35,36pin)
OUT1N (31,32pin)
OUT2P (29,30pin)
OUT2N (25,26pin)
t
PWM out: IC latches with HiZ-Low.
Normal operation after released
from Latch state.
Over current
7.2A(TYP.)
t
soft mute
transition
time
ERROR (21pin)
t
1μ sec(TYP.)
MUTEX(5pin)
Latch release
t
Figure 41
2) Output short protection (Short to GND)
This IC has the output short protection circuit that stops the PWM output when the PWM output is short-circuited to GND
due to abnormality.
Detecting condition - It will detect when MUTEX pin is set High and the current that flows in the PWM output terminal
becomes 7.2A(TYP.) or more. The PWM output instantaneously enters the state of HiZ-Low if
detected, and IC does the latch.
Releasing method – ①After MUTEX pin is set Low once over the soft mute transition time(see page 23/106), MUTEX
pin is returned to High again.
②Turning on the power supply again (VCCP1, VCCP2<2.5V, 10ms(min)).
Short to GND
Release from short to GND
OUT1P (35,36pin)
OUT1N (31,32pin)
OUT2P (29,30pin)
OUT2N (25,26pin)
t
PWM out : IC latches with HiZ-Low state.
Normal operation after released
from latch state.
Over current
7.2A(TYP.)
t
soft mute
transition time
ERROR (21pin)
t
1μ sec(TYP.)
MUTEX(5pin)
Latch release
t
Figure 42
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
25/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
3) DC voltage protection in the speaker
When the DC voltage in the speaker is impressed due to abnormality, this IC has the protection circuit where the speaker
is defended from destruction.
Detecting condition - It will detect when MUTEX pin is set High and PWM output Duty=0% or 100% over 12μsec.
(fs=48kHz) Once detected, The PWM output instantaneously enters the state of HiZ-Low, and IC
does the latch.
Releasing method – ①After MUTEX pin is set Low once over the soft mute transition time(see page 23/106), MUTEX
pin is returned to High again.
②Turning on the power supply again (VCCP1, VCCP2<2.5V, 10ms(min)).
PWM out locked duty=100% abnormal state.
OUT1P (35,36pin)
OUT1N (31,32pin)
OUT2P (29,30pin)
OUT2N (25,26pin)
Abnormal state release
PWM out : IC latches with HiZ - Low state
t
Latch release state
.
Speaker out
t
Soft - start
Protection start surge current
into speaker output
for 12μ esc and over.
ERROR (21pin)
soft mute transition time
t
MUTEX ( 5 pin)
Latch release
t
Figure 43
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
26/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
4) High temperature protection
This IC has the high temperature protection circuit that prevents thermal reckless driving under an abnormal state for the
temperature of the chip to exceed Tjmax=150°C.
Detecting condition - It will detect when MUTEX pin is set High and the temperature of the chip becomes 150°C (TYP.)
or more. The speaker output is muted when detected.
Releasing condition - It will release when MUTEX pin is set High and the temperature of the chip becomes 120°C
(TYP.) or less. The speaker output is outputted when released.
Temperature
IC
of chip junction
℃)
(
150 ℃
120 ℃
t
OUT 1 P (35 , 36 pin )
OUT 1 N (31 , 32 pin )
OUT 2 P (29, 30 pin )
OUT 2 N (25 , 26 pin )
HiZ-Low
t
Speaker
BTL output
(After LC filter )
t
ERROR (21 pin )
3 .3 V
t
Figure 44
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
27/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
5) Under voltage protection
This IC has the under voltage protection circuit that make speaker output mute once detecting extreme drop of the power
supply voltage.
Detecting condition – It will detect when MUTEX pin is set High and the power supply voltage becomes lower than
8.1V. The speaker output is muted when detected.
Releasing condition – It will release when MUTEX pin is set High and the power supply voltage becomes more than
9.1V. The speaker output is outputted when released.
V C C P 1 ( 3 7 , 3 8 p in)
V C C P 2 ( 2 3 , 2 4 p in)
9 .1 V
8 .1 V
t
O UT1P
O UT1N
O UT2P
O UT2N
(3 5 ,3 6 p in )
(3 1 ,3 2 p in )
(2 9 ,3 0 p in )
(2 5 ,2 6 p in )
H iZ- L o w
t
Speaker
B T L o u tp u t
(A fte r L C filte r )
t
E R R O R ( 2 1 p in)
3.3 V
t
Figure 45
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
28/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
6) Over voltage protection
This IC has the over voltage protection circuit that make speaker output mute once detecting extreme drop of the power
supply voltage.
Detecting condition – It will detect when MUTEX pin is set High and the power supply voltage becomes more than
29.5V. The speaker output is muted when detected.
Releasing condition – It will release when MUTEX pin is set High and the power supply voltage becomes less than
28.5V. The speaker output is outputted when released.
V C C P 1 ( 3 7 , 3 8 p in)
V C C P 2 ( 2 3 , 2 4 p in)
2 9 .5 V
2 8 .5 V
t
O UT1P
O UT1N
O UT2P
O UT2N
(3 5 ,3 6 p in )
(3 1 ,3 2 p in )
(2 9 ,3 0 p in )
(2 5 ,2 6 p in )
H iZ- L o w
t
Speaker
B T L o u tp u t
(A fte r L C filte r )
t
E R R O R ( 2 1 p in)
3.3 V
t
Figure 46
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
29/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
7) Clock stop protection
This IC has the clock stop protection circuits that make the speaker output mute when the BCLK and LRCLK frequency
of the digital sound input are decreased or low frequency.
Detecting condition - BCLK frequency is low or stop, LRCLK frequency is stop. The speaker output is muted.
Releasing condition – BCLK and LRCK are OK over 60msec (max).
Low frequency or stop
Normal input
BCLK
LRCLK
Max 60msec
Internal
Error
flag
t
OUT1P
OUT1N
OUT2P
OUT2N
t
Soft-start
Speaker
BTL output
(After LC filter)
t
Figure 47
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
30/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Functional descriptions of DSP Block
1.Digital Sound Processing(DSP)
The digital sound processing (DSP) part of BM5480 is composed of the special hard ware which is the optimal for FPD-TV,
the Mini/Micro Compo. BM5480MUV does the following processing using this special DSP.
2
DC cut HPF, Pre-scalar, Channel mixer, Level DRC, Surround, P Bass+,16 Band P-EQ,
Fine Master Volume, Balance Volume, 2 Band DRC, Post-scalar, Fine Post-scalar, Hard Clipper
The outline and signal flow of the DSP part
Data width:
32 bit (DATA RAM)
Machine cycle:
20.3ns (1024fs, fs=48kHz)
Multiplier:
32×24 → 56 bit
Adder:
56+56 → 56 bit
Data RAM:
512×32 bit
Coefficient RAM:
512×24 bit
Sampling frequency :
fs=32k,44.1k,48kHz
Data
RAM
Input
MUX
0
Coefficient
M
U
X
MUX
RAM
Decoder
circuit
ADD
Acc
Output
Figure 48
Input1
I2S
LJ
RJ
DC cut
HPF
Pre
Chanel
Scaler
Mixer
Level
DRC
Surround
P2Bass+
16Band
/ch BQ
Fine
Master
Volume
Balance
2Band
DRC
Fine
Master
Volume
Post
Scaler
DC cut
HPF
Hard
Clipper
Main
Figure 49
The digital signal from 16 bits to 24 bits is inputted to the DSP but extends 8bit(+48dB) as the overflow margin to the upper
side. When doing the processing which exceeds this range, it processes a clip in the DSP. Incidentally, in case of the 2nd
IIR-type (BQ) filter which is often used generally as the digital filter, because it consumes a lot of overflow margins, the
output of the multiplier and the adder inside needs note.
The output of multipliers and the adding machine might exceed
+48dB by the coefficient of a1, a2, b0, b1, and b2. In that case,
data becomes saturation power. Therefore, the output of the filter
cannot obtain the aimed characteristic.
X[n]
Y[n]
b0
Z-1
X[n-1]
Z-1
b1
a1
Z-1
X[n-2]
Y[n-1]
Z-1
b2
a2
Y[n-2]
-1 is multiplied by the coefficient of a1 and a2.
Direct form 1
¥
Figure 50
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
31/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
The management of audio data is as follows by each block.
Decimal point
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
S
Extension bit
DATA[22:0]
Decimal point
Audio DATA
Data of DSP part
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
S EXT. bit
Coefficient data[20:0]
Coefficient data
Coefficient data of DSP part
Figure 51
1-1 Bypass
It passes in the each function of the DSP by the command. Because it left the set value of the each function can be passed
in, it is possible to do the confirmation of ON/OFF of the sound effect easily.
2
The effect which is possible about the bypass , 1) LEVEL DRC, 2) Surround 3) P Bass + (Pseudo Bass) , 4) 16Band BQ,
5) 2Band DRC and the whole DSP can be passed.
SW6
Input1
I2S
LJ
RJ
DC cut
HPF
Pre
Chanel
Scaler
Mixer
SW1
SW2
SW3
SW4
Level
DRC
Surround
P2Bass+
16Band
/ch BQ
SW5
Fine
Master
Volume
Balance
2Band
DRC
Post
Scaler
Fine
Post
Scaler
DC cut
HPF
Hard
Clipper
Main
Figure 52
Default = 00h
Select Address
&h02 [5:0]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
bit
Explanation of operation (*) '1' bypasses each function.
5
Bypass of LEVEL DRC (SW1)
4
Bypass of Surround (SW2)
3
Bypass of P Bass+ (SW3)
2
0:Normal 1:Bypass
0:Normal 1:Bypass
0:Normal 1:Bypass
2
Bypass of 16Band BQ (SW4)
0:Normal 1:Bypass
1
Bypass of 2band DRC (SW5)
0:Normal 1:Bypass
0
Bypass of DSP (SW6)
0:Normal 1:Bypass
32/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
1 -2 .
Pre-scalar
To overflow when the level sometimes is full scale entry in case of the digital signal which is inputted to the sound DSP
and does surround and equalizer processing, it adjusts an entry gain with Pre-scalar. The adjustable-range can be set
from +48 dB to -79 dB with the 0.5-dB step. (Lch/Rch concurrency control)
Pre-scalar doesn't have a soft transfer feature.
Default = 60h
Select Address
&h16 [ 7:0 ]
Explanation of operation
Command Value
Gain
00
+48dB
01
+47.5dB
…
…
0dB
61
-0.5dB
62
-1dB
…
…
1 -3 .
60
FE
-79dB
FF
-∞
Channel setup with a phase inversion function (Channel Mixer 1)
It sets a mixing in the sound on the left channel and the right channel of the digital signal which was inputted to the DSP.
It makes a stereo signal a monaural here. Also, the phase-inversion, the mute on each channel can be set.
Channel Mixer
L
L
Input
1/2
I2S
LJ
RJ
±1
Lch
±1
Rch
(L+R)/2
L-R
PreScaler
-
R
R
0
Mute
Figure 53
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
33/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
DSP Input : The data inputted into Lch of DSP is inverted.
Default = 0
Select Address
&h17[7]
Value
0
1
Explanation of operation
Normal
Invert
DSP Input : The data inputted into Lch of DSP is mixed.
Default = 1
Select Address
&h17 [ 6:4 ]
Value
0
Explanation of operation
Mute
1
Lch data input
2
Rch data input
3
(Lch + Rch) / 2
4
Lch-Rch
5
-
6
-
7
-
DSP input : The data inputted into Rch of DSP is inverted.
Default = 0
Select Address
&h17 [3]
Value
0
1
Explanation of operation
Normal
Invert
DSP Input : The data inputted into Rch of DSP is mixed.
Default = 2
Select Address
&h17 [ 2:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Value
0
Explanation of operation
Mute
1
Lch data input
2
Rch data input
3
(Lch + Rch) / 2
4
Lch-Rch
5
-
6
-
7
-
34/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
1 -4 .
1st HPF for DC cut (Front)
It cuts the DC offset component of the digital signal which is inputted to the sound DSP with this HPF. The cut off frequency
fc of HPF is using 1 Hz and the degree is using the 1st filter.
Default = 1
Select Address
Input1 &h18 [ 1 ]
Value
0
1
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Not use DC cut HPF
Use DC cut HPF
35/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
1 -5 .
Surround
Surround 1 emphasizes the stereo feeling, and is suitable for the music source.
Surround 2 is effective of a pseudo stereo. Because the monaural voice is pseudo made a stereo, it is suitable for the talk
show etc. of the studio recording.
Surround1 function ON/OFF
Default = 0
Select Address
&h40[ 7 ]
Value
0
Explanation of operation
Surround1 OFF
1
Surround1 ON
Surround2 function ON/OFF
Default = 0
Select Address
&h40 [ 6 ]
Value
0
Explanation of operation
Surround2 OFF
1
Surround2 ON
&h46[7:0]
Surround1
+48dB~-79dB,-∞
(0.5dB step)
Lch
G4
Delay2
Z-m
&h42[7:4]
m = 0 ~ 15
(1 step)
+48dB~-79dB,-∞
(0.5dB step)
+48dB~-79dB,-∞
(0.5dB step)
G5
&h42[3:0]
n = 1 ~ 15
(1 step)
Lch
&h43[7:0]
Delay3
Z-n
&h41[3:0]
l = 1 ~ 15
(1 step)
&h47[7:0]
Delay1
Z-l
HPF
LPF
G1
G2
&h44[7:0]
&h45[7:0]
G3
L-R
To surround 2
+48dB~-79dB,-∞
(0.5dB step)
+48dB~-79dB,-∞
(0.5dB step)
Rch
G4
Rch
&h46[7:0]
Figure 54
+48dB~-79dB,-∞
(0.5dB step)
Surround1 Delay value of feedback part setting for surround effect 1 (Delay1)
Default = 2h
Select Address
&h41 [ 3:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
The command value becomes the amount of the delay.
One sample delay is about 21μs.
“0” is a set prohibition.
36/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Surround1 Delay value of input part setting for surround effect 1 (Delay2)
Default = 2h
Select Address
&h42 [ 7:4 ]
Explanation of operation
The command value becomes the amount of the delay.
One sample delay is about 21μs.
Surround1 Delay value of input part setting for surround effect 1 (Delay3)
Default = 1h
Select Address
&h42 [ 3:0 ]
Explanation of operation
The command value becomes the amount of the delay.
One sample delay is about 21μs.
“0” is a set prohibition.
Surround1 Additive gain setting for surround effect 1 (G1, G2, G3)
Default =66h(G1),70h(G2),70h(G3)
Select Address
G1 : &h43 [ 7:0 ]
G2 : &h44 [ 7:0 ]
G3 : &h45 [ 7:0 ]
Explanation of operation
Command
Gain
00
+48dB
01
+47.5dB
…
…
60
0dB
61
-0.5dB
62
-1dB
…
…
FE
-79dB
FF
-∞
Surround1 Additive gain setting for surround effect 1 (G4)
Default = 60h
Select Address
&h46 [ 7:0 ]
Explanation of operation
Command
Gain
00
+48dB
01
+47.5dB
…
…
60
0dB
61
-0.5dB
62
-1dB
…
…
FE
-79dB
FF
-∞
Surround1 Additive gain setting for surround effect 1 (G5)
Default = FFh
Select Address
&h47 [ 7:0 ]
Explanation of operation
Command
Gain
00
+48dB
01
+47.5dB
0dB
61
-0.5dB
62
-1dB
…
…
37/94
…
…
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
60
FE
-79dB
FF
-∞
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Surround1 HPF
Default=3h
Select Address
&h48 [ 7:4 ]
Explanation of operation
Command
Cut off freq.
Command
Cut off freq.
0
Through
8
1200Hz
1
2
330Hz
390Hz
9
A
1500Hz
-
3
4
470Hz
560Hz
B
C
-
5
6
680Hz
820Hz
D
E
-
7
1000Hz
F
-
Surround1 LPF
Default=5h
Select Address
&h48 [ 3:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Command
Cut off freq.
Command
Cut off freq.
0
Through
8
5600Hz
1
2
1500Hz
1800Hz
9
A
6800Hz
-
3
4
2200Hz
2700Hz
B
C
-
5
6
3300Hz
3900Hz
D
E
-
7
4700Hz
F
-
38/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Surround2
&h49[6:4]
Lch
APF
Lch
G6
a
1-a
Exclusive
Select
a = 0.65 ~ 1.0
(0.05 step)
&h49[7]
Exclusive
Select
&h4A[7:0]
&h49[2:0]
1-a
a
Rch
APF
Rch
G6
Figure 55
Surround2 APF (All Pass Filter)select
Select which channel of L/Rch to insert APF.
Default = 0
Select Address
&h49 [ 7 ]
Value
0
Lch
Explanation of operation
1
Rch
Surround2 APF(All Pass Filter)Cut off frequency
Default = 0
Select Address
&h49 [ 6:4 ]
Value
0
22Hz
Explanation of operation
1
47Hz
2
100Hz
3
220Hz
4
470Hz
Surround2 LR mixing gain
Change the LR mix gain in surround effect 2. The sound extends to the setting of about big gain.
Default = 2h
Select Address
&h49 [ 2:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Command
Gain
Command
Gain
0
x0
4
x0.2
1
x0.05
5
x0.25
2
x0.1
6
x0.3
3
x0.15
7
x0.35
39/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Surround Output gain
Change the gain of the channel opposite to the channel selected with &h49[7].
Default = 60h
Select Address
&h4A [ 7:0 ]
Explanation of operation
Command
Gain
00
+48dB
01
+47.5dB
0dB
61
-0.5dB
62
-1dB
…
…
40/94
…
…
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
60
FE
-79dB
FF
-∞
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
2
1-6. Pseudo bass (P2Bass+)
B ass+
PERFECT PURE
A Pseudo bass function is a function which turns into that it is possible to emphasize low frequency sound effectively also to
the low speaker of low-pass reproduction capability.
In order to be audible as the fundamental wave is sounding in false by adding 2 double sounds and 3 time sound to a
fundamental wave, the reproduction capability of the band of a fundamental wave becomes possible.
Although use independently is also possible for a pseudo bass function, low-pitched sound can be emphasized more by
2
combining with P Bass function.
Moreover, since it is possible to change the band to emphasize, optimizing to the frequency characteristic of the speaker to
be used is possible.
IN
HPF1
APF1
&h4D[7:4]
&h4D[3:0]
APF2
OUT
&h4C[3:0]
LPF2
&h4D[7:4]
Even number
overtone
generator
LPF1
&h4D[3:0]
&h4E[3:0]
HPF2
Fc = 10Hz
Odd
number
overtone
generator
&h4E[7:4]
&h4F[6:4]
Figure 56
Pseudo bass ON/OFF
The effect of the bass emphasis of a pseudo bass (overtone) is used.
Default = 0
Select Address
&h4C [ 7 ]
Value
0
1
Explanation of operation
Not use pseudo bass (overtone)
Use pseudo bass (overtone)
Setting of pseudo bass input HPF1(The super-low element of the fundamental harmonic input to the overtone generator
can be cut.)
Default = 0h
Select Address
&h4C [ 3:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Command
0
1
2
3
4
5
6
7
41/94
Frequency
OFF
22Hz
27Hz
33Hz
39Hz
47Hz
56Hz
68Hz
Command
8
9
A
B
C
D
E
F
Frequency
82Hz
100Hz
120Hz
150Hz
180Hz
220Hz
270Hz
330Hz
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Pseudo bass input LPF1 selection. (The low element of the fundamental harmonic that the overtone generator inputs is
extracted)
Default = 0h
Select Address
&h4D [ 7:4 ]
Explanation of operation
Command
0
1
2
3
4
5
6
7
Frequency
68Hz
82Hz
100Hz
120Hz
150Hz
180Hz
220Hz
270Hz
Command
8
9
A
B
C
D
E
F
Frequency
330Hz
390Hz
470Hz
560Hz
680Hz
820Hz
1000Hz
1200Hz
LPF2 setting for 2 overtones and 3 overtones. (The harmonic content of the overtone is suppressed with this LPF)
Default = 0h
Select Address
&h4D [ 3:0 ]
Explanation of operation
Command
0
1
2
3
4
5
6
7
Frequency
68Hz
82Hz
100Hz
120Hz
150Hz
180Hz
220Hz
270Hz
Command
8
9
A
B
C
D
E
F
Frequency
330Hz
390Hz
470Hz
560Hz
680Hz
820Hz
1000Hz
1200Hz
Additive gain setting for 3 overtones
When the input of the fundamental wave component is assumed to be 0dB, the output of the fundamental wave component
from the overtone generator becomes -3dB.
(Output = Input - 3dB)
Default = 7h
Select Address
&h4E [ 7:4 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Command
0
1
2
3
4
5
6
7
42/94
Gain
-∞
0dB
1dB
2dB
3dB
4dB
5dB
6dB
Command
8
9
A
B
C
D
E
F
Gain
7dB
8dB
9dB
10dB
11dB
12dB
13dB
14dB
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Additive gain setting for 2 overtones
When the input of the fundamental wave component is assumed to be 0dB, the output from the overtone generator
becomes -6dB.
(Output = Input - 6dB)
Default = 7h
Select Address
&h4E [ 3:0 ]
Explanation of operation
Command
Gain
Command
Gain
0
-∞
8
1dB
1
-6dB
9
2dB
2
-5dB
A
3dB
3
-4dB
B
4dB
4
-3dB
C
5dB
5
-2dB
D
6dB
6
-1dB
E
7dB
7
0dB
F
8dB
Subtraction gain setting for 3 overtones (recommendation value: -6dB or -4dB)
Default = 5h
Select Address
&h4F [ 6:4 ]
Explanation of operation
Command
Gain
Command
Gain
0
-∞
4
-6dB
1
-12dB
5
-4dB
2
-10dB
6
-2dB
3
-8dB
7
0dB
Setting at blind time of odd-order overtone generation circuit
The high frequency signal that cannot be attenuated with LPF is included in the LPF1 outgoing signal input to the overtone
generation circuit. It is set the blind time to do an unnecessary zero-cross point masking.
For phase adjustment with LPF1
HPF1
IN
APF1
&h4D[3:0]
APF2
OUT
Delete an unnecessary higher harmonic .
&h4C[3:0]
A super-low-pass component is
intercepted
For phase adjustment with LPF2
&h4D[7:4]
LPF2
&h4E[3:0]
&h4D[7:4]
LPF1
A fundamental-wave component is
extracted.
Overtone
Generator
(even
number)
&h4D[3:0]
HPF2
Fc = 10Hz
Overtone
Ganerator
(odd
number)
&h4E[7:4]
&h4F[6:4]
Output of LPF1
time
Blind time(ignor the zero-cross point)
Figure 57
Default = 1
Select Address
&h4F [ 1:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Value
0
Explanation of operation
1.25ms (Fc = 47Hz to 180Hz of LPF1)
1
0.625ms (Fc = 220Hz to 390Hz of LPF1)
2
0.3125ms (Fc = 470Hz to 800Hz of LPF1)
43/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
1 -7 .
Parametric Equalizer
In this IC, the following block has the feature of the parametric equalizer.
16Band BQ, Crossover filter of 2Band DRC block and BQ of the smooth transition.
The shape is used peaking filter, low shelf filter, high shelf filter, lowpass filter, highpass filter and all path filters.
The setting is to choose F, Q, Gain, and changes into the coefficient of the digital filter in the IC and it transfers to the
coefficient RAM. 16Band BQ have the soft transfer feature. Incidentally, the detailed order of the parameter setting refers to
the following PEQ setting method.
The coefficient RAM which stores a filter coefficient owns four banks and the command can choose it. The coefficient RAM
for the parametric equalizer can set a coefficient to the bank-memory but the bank-memory during sound reconstruction.
But when a coefficient is written to BQ for smooth transition, write a coefficient to same bank for sound reconstruction.
Select of bank memory for coefficient RAM used to reproduce
Default = 0h
Select Address
&h60[ 3:2 ]
Value
0
Explanation of operation
BANK1
1
BANK2
2
BANK3
3
BANK4
Select of bank memory used to set coefficient
Default = 0h
Select Address
&h60 [ 1:0 ]
Value
0
BANK1
Explanation of operation
1
BANK2
2
BANK3
3
BANK4
L/R independence selection
Default = 0h
Select Address
&h60 [ 4 ]*
Value
0
1
Explanation of operation
L/R same
L/R independence(Usable only BANK1,BANK2)
*Notes when &h60 4 is set
Please set all the parametric equalizers setting again, when you change the setting of &h60[4].
The re-setting parametric equalizers are 18 parametric equalizers of BQ1-16, DRC APF, and DRC HPF.
And, please set all BANK setting again, since the placement of BANK is changed, too.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
44/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Sampling frequency selection of coefficient automatic calculated circuit
Default = 0h
Select Address
&h50 [ 1:0 ]
Select of PEQ setting
Only when choose 60[4]=1
Default = 0h
Select Address
&h51 [ 7 ]
Value
0
Explanation of operation
For 48kHz
1
For 44.1kHz
2
For 32kHz
Value
0
Explanation of operation
Lch
1
Rch
When it is &h60[4]=1, and uses the L/R independence setting, and uses smooth transition,
Please synchronize Lch/Rch setting of &h51[7] and channel setting of &h 53[5:4].
Example 1 : When it set Lch at independently L/R: &h 53[5:4] =1 in case of &h60[4]=1 and &h51[7]=0.
Example 2 : When it set Rch at independently L/R: &h 53[5:4] =2 in case of &h60[4]=1 and &h51[7]=1.
Default = 00h
Select
Address
&h51[4:0] Command
Explanation of operation
PEQ
Command
PEQ
Command
0
16Band BQ (1)
8
16Band BQ (9)
10
1
16Band BQ (2)
9
16Band BQ (10)
11
2
3
4
5
6
7
16Band BQ (3)
16Band BQ (4)
16Band BQ (5)
16Band BQ (6)
16Band BQ (7)
16Band BQ (8)
A
B
C
D
E
F
16Band BQ (11)
16Band BQ (12)
16Band BQ (13)
16Band BQ (14)
16Band BQ (15)
16Band BQ (16)
12
13
14
15
16
17
PEQ
2Band DRC
HPF
2Band DRC
APF
-
Command
PEQ
18
-
19
-
1A
1B
1C
1D
1E
1F
-
16Band BQ : BQ is Bi-Quad-type digital filter.
2 Band DRC HPF/APF : The crossover filter of 2Band DRC block should be set to high path filter and all pass filter.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
45/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Select of filter type
Default = 0h
Select Address
&h52[ 2:0 ]
Value
0
Explanation of operation
Peaking Filter
1
Peaking Filter(Equal Q type)
2
Low Shelf Filter
3
High Shelf Filter
4
Low Pass Filter
5
High Pass Filter
6
All Pass Filter
7
Filter through
Select of smooth transition
Default = 0h
Select Address
&h53 [ 6 ]
Value
0
Explanation of operation
Use smooth transition
1
Not use smooth transition
Select Address
Value
0
Explanation of operation
Lch and Rch
&h53 [ 5:4 ]
1
Lch
2
Rch
Select channel of smooth transition
Default = 0h
Setting of smooth transition time
Default = 3h
Select Address
&h53 [ 3:2 ]
Value
0
Explanation of operation
2.7ms
1
5.3ms
2
10.7ms
3
21.3ms
Setting of smooth transition wait time
Default = 0h
Select Address
&h53 [ 1:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Value
0
Explanation of operation
2.7ms
1
5.3ms
2
10.7ms
3
21.3ms
46/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Setting of frequency (F0)
Default = 0Eh
Select Address
&h54 [ 5:0 ]
Explanation of operation
Command Frequency Command Frequency Command Frequency Command Frequency Command Frequency Command Frequency Command Frequency Command Frequency
00
20Hz
08
50Hz
10
125Hz
18
315Hz
20
800Hz
28
2kHz
30
5kHz
38
12.5kHz
01
22Hz
09
56Hz
11
140Hz
19
350Hz
21
900Hz
29
2.2kHz
31
5.6kHz
39
14kHz
02
25Hz
0A
63Hz
12
160Hz
1A
400Hz
22
1kHz
2A
2.5kHz
32
6.3kHz
3A
16kHz
03
28Hz
0B
70Hz
13
180Hz
1B
450Hz
23
1.1kHz
2B
2.8kHz
33
7kHz
3B
18kHz
04
32Hz
0C
80Hz
14
200Hz
1C
500Hz
24
1.25kHz
2C
3.15kHz
34
8kHz
3C
20kHz
05
35Hz
0D
90Hz
15
220Hz
1D
560Hz
25
1.4kHz
2D
3.5kHz
35
9kHz
3D
-
06
40Hz
0E
100Hz
16
250Hz
1E
630Hz
26
1.6kHz
2E
4kHz
36
10kHz
3E
-
07
45Hz
0F
110Hz
17
280Hz
1F
700Hz
27
1.8kHz
2F
4.5kHz
37
11kHz
3F
-
Setting of quality factor (Q)
Default = 13h
Select Address
&h55 [ 4:0 ]
Explanation of operation
Command
Q
Command
Q
Command
Q
Command
Q
00
0.33
08
1.2
10
5.6
18
1.932
01
0.39
09
1.5
11
6.8
19
0.51
02
0.47
0A
1.8
12
8.2
1A
0.601
03
0.56
0B
2.2
13
0.707
1B
0.9
04
0.68
0C
2.7
14
0.541
1C
2.563
05
0.75
0D
3.3
15
1.307
1D
-
06
0.82
0E
3.9
16
0.518
1E
-
07
1.0
0F
4.7
17
0.707
1F
-
Second butterworth is set to 13h. (BQx1) Fourth butterworth is set to 14h, 15h. (BQx2)
Sixth butterworth is set to 16h, 17h, and 18h. (BQx3) Eighth butterworth is set to 19h, 1Ah, 1Bh, 1Ch. (BQx4)
Setting of gain (Gain)
Default = 40h
Select Address
&h56 [ 6:0 ]
Explanation of operation
Command
Gain
1C
-18dB
…
…
38
-1dB
39
-0.5dB
40
0dB
41
+0.5dB
42
+1dB
…
…
64
+18dB
When the each coefficient (b0,b1,b2,a1,a2) exceeds ±4, it is not possible to set it.
Transfer start setting to coefficient RAM
Default = 0
Select Address
&h57 [ 0 ]
Value
0
1
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Transfer stop
Transfer start (After transferring is completed, it becomes 0 by the
automatic operation.)
47/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Setting of smooth transition start
Default = 0
Select Address
&h58 [ 0 ]
Value
0
1
Explanation of operation
Stop the smooth transition operation
Start the smooth transition operation (After the transition is completed,
it becomes 0 by the automatic operation)
* This register cannot read-out.
Read-out smooth transition status
Select Address
&h59 [ 0 ]
Explanation of operation
"1" is read while software is changing.
"0" is read usually.
[attention] The data of coefficient RAM can be read.
Set values such as F, Q, and Gain cannot be read.
【Example of coefficient setting procedure 1】
Ex) Set fc=1kHz, Q=1.0, Gain=+6dB, and Filter type=Peaking Filter to 16Band BQ1 by using the soft transition function.
Sampling frequency: fs=48kHz, Smooth transition time: 21.3ms, Smooth transition wait time: 2.7ms Bank memory:
BANK1 ,L/R same
1)&h60[4]=0h
2) &h60[1:0] = 0h
&h60[3:2] = 0h
3) &h50[1:0] = 0h
4) &h51[4:0] = 00h
5) &h52[2:0] = 00h
6) &h53[7:0] = 0Ch
&h53[6] = 0h
&h53[5:4] = 0h
&h53[3:2] = 3h
&h53[1:0] = 0h
7) &h54[5:0] = 22h
8 &h55[4:0] = 07h
9) &h56 [6:0] = 4Ch
10) &h57[0] = 1h
:Select L/R same
:Select BANK1(for writing)
:Select BANK1(for reading)
:Select sampling frequency to 48kHz
:Select 16 Band BQ1
:Select Peaking Filter
: Use smooth transition
:Select L/R smooth transition
:Set smooth transition time to 21.3ms
:Set smooth transition wait time to 2.7ms
:Set frequency to 1kHz (f0)
: Set quality factor to 1.0
: Set gain level to +6dB
: Transferring start to coefficient RAM for smooth transition
(After transferring is completed, it is cleared automatically to 0h.)
11) Even the transferring completion waits for about 150μs.
12) &h58[0] = 1h
: Smooth transition start
(After smooth transition is completed, it is cleared automatically to 0h.)
13) About 24ms (21.3ms + 2.7ms) stands by to the smooth transition completion. Or, it stands by until 0 is read, and
command &h59[0] is cleared to 0h.
【Example of coefficient setting procedure 2】
Ex) Set fc=200Hz, Q=0.707 and Filter type=Low Pass Filter to 16Band BQ2 by not using the soft transition function.
Sampling frequency: fs=44.1kHz, Bank memory: BANK1 ,L/R same
1) &h60[4] = 0h
2) &h60[1:0] = 0h
3) &h50[1:0] = 1h
4) &h51[4:0] = 01h
5) &h52[2:0] = 04h
6) &h53[6] = 1h
7) &h54[5:0] = 14h
8) &h55[4:0] = 17h
9) &h56[6:0] = 40h
10) &h57[0] = 1h
:Select L/R same
:Select BANK1(for writing)
:Select sampling frequency to 44.1kHz
:Select 16 Band BQ2
:Select Low Pass Filter
: Not Use smooth transition
:Set frequency to 200Hz (f0)
: Set quality factor to 0.707
: Because Low Pass Filter was selected, the setting of the gain can be omitted.
: Transferring start to coefficient RAM for smooth transition
(After transferring is completed, it is cleared automatically to 0h.)
11) Even the transferring completion waits for about 150μs.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
48/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
【Example of coefficient setting procedure 3】
Ex) Set fc=2kHz, Q=0.56, and Filter type=Low Pass Filter to the ch. L of 16Band BQ3, and Set fc=3.15kHz, Q=0.68, and
Filter type=High Pass Filter to the ch. R of 16Band BQ3 by using the soft transition function.
Sampling frequency: fs=48kHz, Smooth transition time: 21.3ms, Smooth transition wait time: 2.7ms Bank memory:
BANK1 ,L/R independence.
1)&h60[4]=1h
2)&h60[ 1:0]=0h
&h60[ 3:2]=0h
3)&h50[ 1:0]=0h
4)&h51[ 7:0]=02h
&h51[ 7]=0h
&h51[ 4:0]=02h
5)&h52[ 2:0]=04h
6)&h53[ 7:0]=0Ch
&h53[6]=0h
&h53[5:4]=0h
&h53[3:2]=3h
&h53[1:0]=0h
7)&h54[5:0]=28h
8)&h55[4:0]=03h
9)&h56[6:0]=40h
10)&h57[0]=1h
:Select L/R independence
: Select BANK1(for writing)
: Select BANK1(for reading)
: Select sampling frequency to 48kHz
:Select ch. L
:Select 16Band BQ3
:Select Low Pass Filter
:Use smooth transition
:Select L/R smooth transition
:Set smooth transition time to 21.3ms
:Set smooth transition wait time to 2.7ms
:Set frequency to 2kHz (f0)
: Set quality factor to 0.56
: Because Low Pass Filter was selected, the setting of the gain can be omitted.
: Transferring start to coefficient RAM for smooth transition
(After transferring is completed, it is cleared automatically to 0h.)
11) Even the transferring completion waits for about 150μs.
12)&h51[7:0]=82h
&h51[7]=1h
:Select ch. R
&h51[4:0]=02h
:Select 16Band BQ3
13)&h52[2:0]=05h
:Select High Pass Filter
14)&h54[5:0]=2Ch
:Set frequency to 3.15kHz (f0)
15)&h55[4:0]=04h
: Set quality factor to 0.68
16)&h56[6:0]=40h
: Because High Pass Filter was selected, the setting of the gain can be omitted.0
17)&h57[0]=1h
: Transferring start to coefficient RAM for smooth transition
(After transferring is completed, it is cleared automatically to 0h.)
18) Even the transferring completion waits for about 150μs.
19)&h58[0]=1h
: Smooth transition start
(After smooth transition is completed, it is cleared automatically to 0h.)
20) About 24ms (21.3ms + 2.7ms) stands by to the smooth transition completion. Or, it stands by until 0 is read, and
command &h59[0] is cleared to 0h.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
49/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
1 -8 .
Volume
Volume is from+24dB to -103dB, and can be selected by the step of 0.125dB. At the time of switching of Volume, smooth
transition is performed. Soft transition duration is optional with the command.
It becomes the following formula at the transition from AdB to BdB. C is smooth transition duration selected by &h15[7:6]
command.
Transition time = |(10
Setting of soft transition time
Default = 0
Select Address
&h15 [ 7:6 ]
Value
0
21.3ms
1
42.7ms
2
85.3ms
A
B
20
20
- 10
) * C ms |
Explanation of operation
Setting of volume
Default = FFh
Select Address
&h11 [ 7:0 ]
Explanation of operation
Command
00
01
Gain
+24dB
+23.5dB
…
…
30
31
32
0dB
-0.5dB
-1dB
…
…
FE
FF
-103dB
-∞
Setting of fine volume
This command becomes effective by sending the following command after setting.
When using this command, it is possible to set a volume in 0.125dB carving.
Setting of fine volume
Default = 0h
Select Address
&h10 [ 1:0 ]
Value
0
Explanation of operation
0dB
1
-0.125dB
2
-0.25dB
3
-0.375dB
【Note1】
It is possible to use with the 0.5-dB step in changing only &h11[7:0] when &h10[1:0]=0.
【Note2】
It is possible to use with the 0.125-dB step in setting both &h10[1:0] and &h11[7:0].
In case of &h10[1:0]=0, it becomes the set value of &h11[7:0].
In case of &h10[1:0]=1, it becomes the -0.125dB set value of &h11[7:0].
In case of &h10[1:0]=2, it becomes the -0.25dB set value of &h11[7:0].
In case of &h10[1:0]=3, it becomes the -0.375dB set value of &h11[7:0].
Because it is fixed by the transfer of &h11 in any case, the soft transfer can be beforehand begun in the set value for the direct following of the purpose in
setting &h11 after setting in &h10.
&h11
&h10→&h11
&h11
&h10→&h11
Volume
Volume
When use 0.5dB steps
When use 0.125dB steps
Figure 58
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
50/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
1 -9 .
Balance
As for balance, it is possible to be attenuated at 1dB step width from volume setting value. The switch operation becomes a
smooth transition. When the balance changes, smooth transition is done. Smooth transition duration becomes the same
formula as the volume.
Setting of L/R balance
Default = 80h
Select Address
&h12 [ 7:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Command
00
01
…
7E
7F
80
81
…
FE
FF
51/94
Lch
0dB
0dB
…
0dB
0dB
0dB
-1dB
…
-126dB
-∞
Rch
-∞
-126dB
…
-1dB
0dB
0dB
0dB
…
0dB
0dB
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
1 -1 0 .
2 band DRC
This DRC is used in order to prevent speaker protection and the clip output of a large audio signal.
In addition to two bands of DRC for low and high frequency, there is DRC for the whole frequency in the latter
part. Non clip output is possible.
DRC for low frequency band and DRC for high frequency band can set up two threshold value levels. Moreover, it is
possible to also change slope.
2 Band DRC block diagram
Gain
Controller
Cross over
Filters
AGC_TH1, Slope α
All frequency Band
AGC_TH2
DRC1
HPF
Peak
Detector
DRC2
Input
Output
AGC_TH
Filter_Freq
[5:0]
High frequency Band
Gain
Controller
AGC_TH1, Slope α
DRC1
Peak
Detector
DRC2
APF
AGC_TH2
Filter_Freq
[5:0]
Gain
Peak
Controller
Detector
Low frequency Band
Figure 59
DRC transition figure
Input
A_TIME
AGC_TH
Volume
Level
Output
AGC_TH
R_TIME
A_TIME
R_TIME
A_ RATE
R_ RATE
Figure 60
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
52/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
DRC input-and-output gain characteristics
[dB]
VO
The formula which asks for Slope alpha is described below.
α = 00h
Alpha changes into 8bit Hex data of the complement of 2 the value calculated by calculation.
y
x
20
20
α
10 - 10
α =
AGC_TH2
y = -6dB
TH
20
x
20
× 128
10 - 10
AGC_TH1
-12dB
TH is AGC_TH1. x is input level. y is output level.
α = 80h
Ex) It asks for alpha at the time of AGC_TH1 = -12dB, x = 0dB y = -6dB
-6
0
1020 - 1020
α =
-12
0
× 128
1020 - 1020
α = 85.266 → 55H
VOinf
55H calculated is set as &h25 or &h2A
VIinf
-12dB
x = 0dB
VI
Figure 61
Volume Curve
Volume
Level
Linear
Curve
Linear
Curve
Exponential
Curve
Exponential
Curve
AGC_TH
A_RATE
R_RATE
Time
Figure 62
ON/OFF setting of DRC for all frequency band.
OFF is through output.
Default = 1
Select Address
&h20 [ 3 ]
Value
0
1
Explanation of operation
Not use
Use
ON/OFF setting of DRC1 for high frequency band. (DRC which can perform slope variable)
OFF is through output.
Default = 1
Select Address
&h20 [ 7 ]
Value
0
1
Explanation of operation
Not use
Use
ON/OFF setting of DRC2 for high frequency band. (Compressor)
OFF is through output.
Default = 1
Select Address
&h20 [ 6 ]
Value
0
1
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Not use
Use
53/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
ON/OFF setting of DRC1 for low frequency band. (DRC which can perform slope variable)
OFF is through output.
Default = 1
Select Address
&h20 [ 5 ]
Value
0
1
Explanation of operation
Not use
Use
ON/OFF setting of DRC2 for low frequency band. (Compressor)
OFF is through output.
Default = 1
Select Address
&h20 [ 4 ]
Value
0
1
Explanation of operation
Not use
Use
The volume curve at the time of an attack (A_RATE) is selected.
Default = 0
Select Address
&h21[ 7 ]
Value
0
1
Explanation of operation
Linear curve
Exponential curve
The volume curve at the time of a release (R_RATE) is selected.
Default = 0
Select Address
&h21 [ 6 ]
Value
0
1
Explanation of operation
Linear curve
Exponential curve
The choice of the DRC composition
It uses a standard in 2Band DRC but it is possible to use as 1Band DRC, too.
To make the composition of 1Band DRC, it chooses through setting in HPF and APF of the crossover filter.
【Procedure】
1) &h51 = 10h
2) &h52 = 07h
3) &h57 = 01h
4) &h51 = 11h
5) &h52 = 07h
6) &h57 = 01h
:Select HPF of the 2Band DRC.
:Select Filter through.
:It starts a transfer to the coefficient RAM.
:Select APF of 2Band DRC.
:Select Filter through.
:It starts a transfer to the coefficient RAM.
To set the crossover filter which divides the high frequency band and the low frequency band of 2Band DRC, therefore, it is
referred to the chapter 1-7.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
54/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Setting of DRC AGC_TH for all bands.
When using according to either of the DRC for the high area or the DRC for the low area bigger AGC_TH setting, the
distortion in the crossover point can be suppressed.
Default = 40h
Select Address
&h38 [ 6:0 ]
Explanation of operation
Command
00
…
3F
40
41
Threshold
-32dB
…
-0.5dB
0dB
+0.5dB
…
58
…
+12dB
Setting of DRC A_RATE for all bands. (The compression curve transition time in attack)
Default = 3h
Select Address
&h3A [ 6:4 ]
Explanation of operation
Command
0
1
2
3
A_RATE time
1ms
2ms
3ms
4ms
Command
4
5
6
7
A_RATE time
5ms
10ms
20ms
40ms
Setting of DRC R_RATE for all bands. ( The expansion curve transition time in release)
Default = Bh
Select Address
&h3A [ 3:0 ]
Explanation of operation
Command R_RATE time Command R_RATE time
0
0.125s
8
2s
1
0.1825s
9
2.5s
2
0.25s
A
3s
3
0.5s
B
4s
4
0.75s
C
5s
5
1s
D
6s
6
1.25s
E
7s
7
1.5s
F
8s
Setting of DRC A_TIME for all bands. (Setting of detection time for attack operation)
Default = 1h
Select Address
&h3B [ 7:4 ]
Explanation of operation
Command
A_TIME time
Command
A_TIME time
0
0ms
8
6ms
1
0.5ms
9
7ms
2
1ms
A
8ms
3
1.5ms
B
9ms
4
2ms
C
10ms
5
3ms
D
20ms
6
4ms
E
30ms
7
5ms
F
40ms
Setting of DRC R_TIME for all bands. (Setting of detection time for release operation)
Default = 3h
Select Address
&h3B [ 2:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Command
R_TIME time
Command
R_TIME time
0
5ms
4
100ms
1
10ms
5
200ms
2
25ms
6
300ms
3
50ms
7
400ms
55/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Slope (α) setting of DRC1 for high frequency band
Default = 80h
Select Address
&h29 [ 7:0 ]
Explanation of operation
[dB]
VO
α = 00h
The formula which asks for Slope alpha is described below.
Alpha changes into 8bit Hex data of the complement of 2 the value calculated by calculation.
y
α
α =
AGC_TH2
y = -6dB
x
1020 - 1020
TH
x
× 128
1020 - 1020
AGC_TH1
-12dB
α = 80h
TH is AGC_TH1. x is input level. y is output level.
Ex) It asks for alpha at the time of AGC_TH1 = -12dB, x = 0dB y = -6dB
-6
α =
0
1020 - 1020
-12
0
× 128
1020 - 1020
α = 85.266 → 55H
VOinf
55H calculated is set as &h61 or &h69
VIinf
-12dB
x = 0dB
VI
AGC_TH1 setting of DRC1 for high frequency band
Please set below to the setting value of AGC_TH2.
Default = 40h
Select Address
&h28 [ 6:0 ]
Explanation of operation
Command
00
…
3F
40
41
Threshold
-32dB
…
-0.5dB
0dB
+0.5dB
…
58
…
+12dB
AGC_TH2 setting of DRC2 for high frequency band
Default = 40h
Select Address
&h2C [ 6:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
56/94
Command
00
…
3F
40
41
Threshold
-32dB
…
-0.5dB
0dB
+0.5dB
…
58
…
+12dB
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
High frequency band A_RATE setting (It is the transition time of a compression curve at the time of an attack.)
DRC1 and DRC2 for high frequency band are individually setting.
Default = 3h
Select Address
DRC1 &h2A [ 6:4 ]
DRC2 &h2E [ 6:4 ]
Explanation of operation
Command A_RATE time Command A_RATE time
0
1ms
4
5ms
1
2ms
5
10ms
2
3ms
6
20ms
3
4ms
7
40ms
High frequency band R_RATE setting (It is the transition time of an extension curve at the time of release.)
DRC1 and DRC2 for high frequency band are individually setting.
Default = Bh
Select Address
DRC1 &h2A [ 3:0 ]
DRC2 &h2E [ 3:0 ]
Explanation of operation
Command R_RATE time Command R_RATE time
0
0.125s
8
2s
1
0.1825s
9
2.5s
2
0.25s
A
3s
3
0.5s
B
4s
4
0.75s
C
5s
5
1s
D
6s
6
1.25s
E
7s
7
1.5s
F
8s
A_TIME1 setting of DRC1 for high frequency band (Detection time setting of attack operation)
DRC1 and DRC2 for high frequency band are individually setting.
Default = 1h
Select Address
DRC1 &h2B [ 7:4 ]
DRC2 &h2F [ 7:4 ]
Explanation of operation
Command
A_TIME time
Command
A_TIME time
0
0ms
8
6ms
1
0.5ms
9
7ms
2
1ms
A
8ms
3
1.5ms
B
9ms
4
2ms
C
10ms
5
3ms
D
20ms
6
4ms
E
30ms
7
5ms
F
40ms
R_TIME setting of DRC for high frequency band (Detection time setting of release operation)
DRC1 and DRC2 for high frequency band are individually setting.
Default = 3h
Select Address
DRC1 &h2B [ 2:0 ]
DRC2 &h2F [ 2:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Command
R_TIME time
Command
R_TIME time
0
5ms
4
100ms
1
10ms
5
200ms
2
25ms
6
300ms
3
50ms
7
400ms
57/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Slope (α) setting of DRC1 for low frequency band
Default = 80h
Select Address
&h31 [ 7:0 ]
Explanation of operation
[dB]
VO
The formula which asks for Slope alpha is described below.
α = 00h
alpha changes into 8bit Hex data of the complement of 2 the value calculated by calculation.
y
α
α =
AGC_TH2
y = -6dB
x
1020 - 1020
TH
20
x
× 128
10 - 1020
AGC_TH1
-12dB
α = 80h
TH is AGC_TH1. x is input level. y is output level.
Ex) It asks for alpha at the time of AGC_TH1 = -12dB, x = 0dB y = -6dB
-6
α =
0
1020 - 1020
-12
0
× 128
1020 - 1020
α = 85.266 → 55H
VOinf
55H calculated is set as &h61 or &h69
VIinf
-12dB
x = 0dB
VI
AGC_TH1 setting of DRC1 for low frequency band
Please set below to the setting value of AGC_TH2.
Default = 40h
Select Address
&h30 [ 6:0 ]
Explanation of operation
Command
Threshold
00
-32dB
…
…
3F
-0.5dB
40
0dB
41
+0.5dB
…
58
…
+12dB
AGC_TH2 setting of DRC2 for low frequency band
Default = 40h
Select Address
&h34 [ 6:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
58/94
Command
Threshold
00
-32dB
…
…
3F
-0.5dB
40
0dB
41
+0.5dB
…
58
…
+12dB
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Low frequency band A_RATE setting (It is the transition time of a compression curve at the time of an attack.)
DRC1 and DRC2 for low frequency band are individually setting.
Default = 3h
Select Address
DRC1 &h32 [ 6:4 ]
DRC2 &h36[ 6:4 ]
Explanation of operation
Command A_RATE time Command A_RATE time
0
1ms
4
5ms
1
2ms
5
10ms
2
3ms
6
20ms
3
4ms
7
40ms
Low frequency band R_RATE setting (It is the transition time of an extension curve at the time of release.)
DRC1 and DRC2 for low frequency band are individually setting.
Default = Bh
Select Address
DRC1 &h32 [ 3:0 ]
DRC2 &h36 [ 3:0 ]
Explanation of operation
Command R_RATE time Command R_RATE time
0
0.125s
8
2s
1
0.1825s
9
2.5s
2
0.25s
A
3s
3
0.5s
B
4s
4
0.75s
C
5s
5
1s
D
6s
6
1.25s
E
7s
7
1.5s
F
8s
A_TIME1 setting of DRC1 for low frequency band (Detection time setting of attack operation)
DRC1 and DRC2 for low frequency band are individually setting.
Default = 1h
Select Address
DRC1 &h33 [ 7:4 ]
DRC1 &h37 [ 7:4 ]
Explanation of operation
Command
A_TIME time
Command
A_TIME time
0
0ms
8
6ms
1
0.5ms
9
7ms
2
1ms
A
8ms
3
1.5ms
B
9ms
4
2ms
C
10ms
5
3ms
D
20ms
6
4ms
E
30ms
7
5ms
F
40ms
R_TIME setting of DRC for low frequency band (Detection time setting of release operation)
DRC1 and DRC2 for low frequency band are individually setting.
Default = 3h
Select Address
DRC1 &h33 [ 2:0 ]
DRC2 &h37 [ 2:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Command
R_TIME time
Command
R_TIME time
0
5ms
4
100ms
1
10ms
5
200ms
2
25ms
6
300ms
3
50ms
7
400ms
59/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
【Question】
What is the purpose of DRC for all frequency bands?
2 Band DRC block diagram
Gain
Controller
Peak
Detector
Cross over
Filters
HPF
All frequency Band
DRC1
DRC2
Input
Output
High frequency Band
Gain
Controller
DRC1
Peak
Detector
DRC2
APF
Gain
Peak
Controller
Detector
Low frequency Band
Figure 63
【Answer】
The purpose is for keeping constant the output level in the crossover point of low frequency band and high frequency band.
A frequency characteristic figure with a cross over frequency 1.2kHz of DRC for low frequency band and DRC for high
frequency band is shown below.
Figure 64
Next, the graph of AGC_TH=0dB, cross over frequency = 1.2kHz, and the frequency vs. output gain when not using all the
DRC for all frequency bands is shown.
10
Output Gain (dB)
8
6
4
0dB
2
6dB
0
12dB
-2
-4
100
1000
10000
Frequency (Hz)
Figure 65
Input level 0dB is a flat. However, on an input level of +6dB or +12dB, it is over 0dB of a compression level near the cross
over frequency. In order to prevent this phenomenon, DRC for all frequency bands is used. However, when this
phenomenon does not exist in a problem, I think that it is not necessary to use DRC for all frequency bands.
AGC_TH of DRC for all frequency band sets up AGC_TH2 value of the higher one, when AGC_TH2 differ by DRC for high
frequency band, and DRC for low frequency band.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
60/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
【Question】
Recommendation value setting of 2 band DRC?
【Answer】
The recommendation value of 2 band DRC was examined to speaker protection using FPD TV.
・A_RATE : 4ms
・R_RATE : 2s or more
・A_TIME : 0.5ms
・R_TIME : 50ms or more
It is not uncomfortable to a music source to arrange all DRC (low frequency band, high frequency band, all frequency band)
with the same value.
【Question]
When master volume is increased, why is it that only the sound of a high region becomes large?
【Answer】
It investigated about the cross over frequency and the relation of AGC_TH2 of DRC for high frequency band.
Its sound energy decreases, so that music data becomes high frequency. When a cross over frequency is set up highly,
unless it lowers AGC_TH2 of DRC for high frequency band, when master volume is increased, the effect by limit cannot be
heard.
The red line shows the Peak level.
Figure 66
AGC_TH2 correction value
About the amount of adjustments of AGC_TH2 of DRC for high frequency band.
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
100
1000
10000
Cross over frequency (Hz)
Figure 67
Please use as a standard of the adjustment value from AGC_TH2 value of DRC for low frequency band.
Moreover, the amount of adjustments decreases by setting up a cross over frequency lowness.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
61/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
1-11.
Post-scalar
To prevent from an overflow in the DSP, it adjusts a gain with the scalar. An adjustable range can be set up at a 0.5dB step
from +48dB to -79dB. Post-scalar does not have a smooth transition function.
(Same control of Lch/Rch.)
Default = 60h
Select Address
&h13 [ 7:0 ]
Command
00
01
Gain
+48dB
+47.5dB
…
…
60
61
62
0dB
-0.5dB
-1dB
…
…
1 -1 2 .
Explanation of operation
FE
FF
-79dB
-∞
Fine Post-scalar
An adjustable range can be set up at a 0.1dB step from +0.7dB to –0.8dB. Fine Post-scalar does not have a smooth
transition function.
(Independent control of Lch/Rch.)
Default=8h
Select Address
Lch &h14 [ 7:4 ]
Rch &h14 [ 3:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Command
0
1
2
3
4
5
6
7
62/94
Gain
-0.8dB
-0.7dB
-0.6dB
-0.5dB
-0.4dB
-0.3dB
-0.2dB
-0.1dB
Command
8
9
A
B
C
D
E
F
Gain
0dB
+0.1dB
+0.2dB
+0.3dB
+0.4dB
+0.5dB
+0.6dB
+0.7dB
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
1 -1 3 .
Hard Clipper
When measuring the rated output of the television, THD+N measures in 10%. It can be made to clip with any output
amplitude by using a clipper function. For example, the rated output of 10W or 5W can be gained using the amplifier of 15W
output.
Hard clip
Clip level:0dB
Clip level:-3dB
Clip level:+3dB
+3dB
+3dB
+3dB
0dB
0dB
0dB
-3dB
-3dB
-3dB
-6dB
-6dB
-6dB
Figure 68
Clipper setting
Default = 1
Select Address
&h1A [ 0 ]
Value
0
1
Explanation of operation
Clipper function is not used.
Hard clipper function is used.
Clip level selection
Default = E1h
Select Address
&h1B [ 7:0 ]
Explanation of operation
Command
00
…
E0
E1
E2
-0.1dB
0dB
+0.1dB
…
…
63/94
…
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Gain
-22.5dB
FF
+3dB
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
1 -1 4 .
DC cut HPF (Back)
DC offset element of the digital signal outputted from audio DSP is cut by this HPF.
The cutoff frequency fc of HPF uses the 1Hz filter, and the degree uses the first-order filter.
Default = 1
Select Address
&h18 [ 0 ]
Value
0
1
1 -1 5 .
Explanation of operation
Not use
Use
RAM clear
The data RAM of DSP and coefficient RAM are cleared.
40us or more is required until all the data is cleared.
Clear of the data RAM
Default = 1
Select Address
&h01 [ 7 ]
Value
0
1
Explanation of operation
Normal
Clear operation
Clear of coefficient RAM
Default = 1
Select Address
&h01 [ 6 ]
Value
0
1
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Normal
Clear operation
64/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
1-16. Audio Output Level Meter
It is possible to output the peak level of the PCM data inputted into a PWM processor.
A peak value can be read using the 2-wire command interface as 16 bit data of an absolute value.
The interval holding a peak value can be selected from six steps (50ms step) from 50ms to 300ms.
A peak hold result can be selected from L channel, R channel, and a monophonic channel {(Lch+Rch) /2}.
Audio Output Level Meter block diagram
I2s
DSP
Peak Hold
(Lch)
Peak Hold
(Rch)
0.5
Selector
&h75 METER_LOAD [1:0]
Level Output Register
&h76, &h77
OUT_LEVEL [15:0]
Figure 69
Setting of the peak level hold time interval of Audio Output Level Meter
Default = 00h
Select Address
&h74 [ 2:0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Command
0
1
2
3
4
5
65/94
Hold time
50ms
100ms
150ms
200ms
250ms
300ms
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
The signal of Audio Level Meter read-back is selected.
A value will be taken into a read-only register if a setting value is written in.
In order to update this register value, it is necessary to write in a setting value again.
Default = 0
Select Address
&h75 [ 1:0 ]
Value
0
Explanation of operation
The peak level of L channel
1
The peak level of R channel
2
The peak level of monophonic channel {(Lch+Rch) /2}
Read-back of Audio Output Level
&h76 (upper 8 bits) and a &h77 (lower 8 bits) commands are read for the maximum within the period appointed by the
command &h74 using the 2-wire interface.
(Example)
When FFFFh is read, mean 1.0 (0dBFs).
When 8000h is read, mean 0.5 (-6dBFs).
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
66/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
2.Setting and reading method of parametric equalizer
It explains a detailed sequence of the setting method and the reading method of the parametric equalizer separately for
usage.
2-1 PEQ coefficient setting
The parametric equalizer consists of Bi-quad filter as follows. Each coeffiect of Bi-quad filter can be written directly. It is
S2.21 format, and setting range is -4≦x<+4.
Moreover, the coefficient address is shown in Table 1.
X[n]
Y[n]
b0
Z-1
X[n-1]
Z-1
b1
a1
Z-1
X[n-2]
Y[n-1]
Z-1
b2
Direct form 1
a2
Y[n-2]
Figure 70
2-1-1 Writing sequence (It sets up in number order)
1. BANK1 to 4 is appointed. (&h60[1:0])
2. Address setting (&h61) (*1)Table 1 is referred to.
3. 24bit coefficient Upper[23:16]bit setting (&h62[7:0])
4. 24bit coefficient Middle[15:8]bit setting (&h63[7:0])
5. 24bit coefficient Lower [7:0]bit setting (&h64[7:0])
6. The writing of coefficients is performed. (&h65[0] = 1) (*2)
(*2) After writing complete of coefficients is cleared automatically. It is not necessary to transmit h65[0] =L. Coefficient
writing takes about 100μsec.100μsec should not change an address setup and several 24-bit setup after coefficient write-in
execution.
(ex) When 0x3DEDE7 is written in BANK1, same L/Rch, and 16band BQ1 b0
1. &h60 = 0*h (BANK1 is appointed.)
2. &h61 = 00h (16band BQ1 b0 is appointed)
3. &h62 = 3Dh (Upper[23:16] is setting)
4. &h63 = EDh (Middle[15:8] is setting)
5. &h64 = E7h (Lower[7:0] is setting)
6. &h65 = 01h (Coefficient transfer) (*3)
(*3) After writing complete of coefficients is cleared automatically.
7. 100μsec or more μsec wait
The writing of other coefficients is performed.
2-1-2 Read-back sequence (It sets up in number order)
1. BANK1 to 4 is appointed. (&h60[3:2])
2. Address setting (&h61) (*4)Table 1 is referred to.
3. Setting of a read-back register address (&hD0)
4. Read-back of the 24bit coefficient Upper[23:16]bit (&h66[7:0])
5. Read-back of the 24bit coefficient Middle[15:8]bit (&h67[7:0])
6. Read-back of the 24bit coefficient Lower[7:0]bit (&h68[7:0])
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
67/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
2-1-3 When the coefficient of PEQ is set up directly and a soft transition is performed
1. Set PEQ coefficient to soft transition address whose address is 50-54.Please refers to Table1.
Since in the case of &h60[4]=1(Enable L/R independent setting) and &h53 [5:4] =0 a soft transition is carried out and
it is set to LR simultaneous , please write a coefficient in both LR address.
In the case of &h53[5:4]=1, coefficient is set to only Lch address.
In the case of &h53[5:4]=2, coefficient is set to only Rch address.
2. Select PEQ channel that is performed soft transition by setting &h51[4:0] address.
3. &h58[0]=1h:Start soft transition (After the completion of soft transition this register is automatically cleared by 0 h)
4. Wait soft transition completion(about 24msec), or read command &h59 [0], and stand by until it is cleared by 0 h.
Table1. Specified coefficient
&h61[6:0]
Specified
coefficient
&h61[6:0]
Specified
coefficient
00
16BandBQ1 b0
23
16BandBQ8 b0
01
16BandBQ1 b1
24
16BandBQ8 b1
02
16BandBQ1 b2
25
16BandBQ8 b2
03
16BandBQ1 a1
26
16BandBQ8 a1
04
16BandBQ1 a2
27
16BandBQ8 a2
05
16BandBQ2 b0
28
16BandBQ9 b0
06
16BandBQ2 b1
29
16BandBQ9 b1
07
16BandBQ2 b2
2A
16BandBQ9 b2
08
16BandBQ2 a1
2B
16BandBQ9 a1
09
16BandBQ2 a2
2C
16BandBQ9 a2
0A
16BandBQ3 b0
2D
16BandBQ10 b0
0B
16BandBQ3 b1
2E
16BandBQ10 b1
0C
16BandBQ3 b2
2F
16BandBQ10 b2
0D
16BandBQ3 a1
30
16BandBQ10 a1
0E
16BandBQ3 a2
31
16BandBQ10 a2
0F
16BandBQ4 b0
32
16BandBQ11 b0
10
16BandBQ4 b1
33
16BandBQ11 b1
11
16BandBQ4 b2
34
16BandBQ11 b2
12
16BandBQ4 a1
35
16BandBQ11 a1
13
16BandBQ4 a2
36
16BandBQ11 a2
14
16BandBQ5 b0
37
16BandBQ12 b0
15
16BandBQ5 b1
38
16BandBQ12 b1
16
16BandBQ5 b2
39
16BandBQ12 b2
17
16BandBQ5 a1
3A
16BandBQ12 a1
18
16BandBQ5 a2
3B
16BandBQ12 a2
19
16BandBQ6 b0
3C
16BandBQ13 b0
1A
16BandBQ6 b1
3D
16BandBQ13 b1
1B
16BandBQ6 b2
3E
16BandBQ13 b2
1C
16BandBQ6 a1
3F
16BandBQ13 a1
1D
16BandBQ6 a2
40
16BandBQ13 a2
1E
16BandBQ7 b0
41
16BandBQ14 b0
1F
16BandBQ7 b1
42
16BandBQ14 b1
20
16BandBQ7 b2
43
16BandBQ14 b2
21
16BandBQ7 a1
44
16BandBQ14 a1
22
16BandBQ7 a2
45
16BandBQ14 a2
When L/R independent, Lch:&h61[7]=0, Rch: &h61[7]=1
When L/R same, &h61[7] is not reflected.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
68/94
&h61[6:0]
Specified
coefficient
46
47
48
49
4A
4B
4C
4D
4E
4F
50
51
52
53
54
55
56
57
58
59
5A
5B
5C
5D
5E
16BandBQ15 b0
16BandBQ15 b1
16BandBQ15 b2
16BandBQ15 a1
16BandBQ15 a2
16BandBQ16 b0
16BandBQ16 b1
16BandBQ16 b2
16BandBQ16 a1
16BandBQ16 a2
Smooth BQ b0
Smooth BQ b1
Smooth BQ b2
Smooth BQ a1
Smooth BQ a2
DRC_HPF b0
DRC_HPF b1
DRC_HPF b2
DRC_HPF a1
DRC_HPF a2
DRC_APF b0
DRC_APF b1
DRC_APF b2
DRC_APF a1
DRC_APF a2
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
BM5480MUV has a mute function of audio DSP by a terminal.
It is possible to perform mute of the output from Audio DSP by setting a MUTEX terminal to "L."
Transition time setting at the time of mute is as follows.
Smooth transition mute time setting
The transition time when changing to a mute state is selected.
The soft transition time at the time of mute release is 10.7ms fixed.
Default = 3
Select Address
&h15 [ 1:0 ]
Value
0
10.7ms
Explanation of operation
1
21.4ms
2
42.7ms
3
85.4ms
&h15[1:0] Mute time setting
It is only operated by mute terminal.
XdB
Mute state
Audio output data
A
&h15[1:0] setting
Command
A
0
10.7ms
1
21.4ms
2
42.7ms
3
85.4ms
B
B
10.7ms
10.7ms
10.7ms
10.7ms
Figure 71
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
69/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Smooth transition mute release time setting
Time after detecting mute release until it actually begins mute release operation is set up.
Default = 0
Select Address
&h15 [ 5:4 ]
Value
0
Explanation of operation
0ms
1
100ms
2
200ms
3
300ms
Operation of mute delay &h15[5:4]
MUTEX
Command
0
1
2
3
Audio output data
A
A
0ms
100ms
200ms
300ms
Figure 72
【Question】
When mute release is performed, what happens during mute operation?
Moreover, when there is release delay time, what happens?
【Answer】
When mute release is performed during mute operation, mute release operation is started in an instant.
(When delay setting is 0) Return time at this time becomes shorter than mute release time (for example, 10ms).
Next, when there is setting of release delay time, a delay timer starts a count from the time of performing mute release, and
mute release operation is started after delay time completing.
When mute release time setting is set to 10ms, it is designing so that a mute release curve may draw f curve.
Mute transition-time setting:10.7ms,Mute release delay setting:0ms
Audio
output
Mute transition-time setting:10.7ms,Mute release delay setting:100ms
Audio
output
100ms
Mute start
Mute release operation start
MUTEX
Mute start
Mute release
Mute release operation start
MUTEX
Figure 73
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
70/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
4.Small signal input detection function
There is a function which detects the audio data input of a non-signal or a small signal. This function is used in order to
reduce the standby power consumption of an audio set. Setting of a detection level and detection time can be performed.
If the signal below a setting detection level continues in both L channel and R channel, a small signal detection flag will
become "H". A detection result can be read from command &h72 [2:0].
The point which acts as a monitor of the small signal becomes input data of audio DSP block.
I2S
DSP
Peak Detector
(Lch)
Peak Detector
(Rch)
Block diagram
Counter
Flag
&h72 [0]
NOSIG_DET_FLAG
Figure 74
Detection level setting
Default = 00h
Select Address
&h70 [ 4:0 ]
Explanation of operation
Command
Level
Command
Level
Command
Level
00
-∞
08
-77dB
10
-69dB
01
-96dB
09
-76dB
11
-68dB
02
-92dB
0A
-75dB
12
-67dB
03
-88dB
0B
-74dB
13
-66dB
04
-84dB
0C
-73dB
14
-65dB
05
-80dB
0D
-72dB
15
-64dB
06
-79dB
0E
-71dB
16
-62dB
07
-78dB
0F
-70dB
17
-60dB
Detection time setting
Default = 0
Select Address
&h71 [ 1:0 ]
Value
0
42.7ms
Explanation of operation
1
85.4ms
2
170.7ms
3
341.4ms
* Sampling frequency is value of Fs = 48kHz. In the case of Fs = 44.1kHz, it will be about 1.09 times the setting value.
Detection flag read-back (Read Only)
Select Address
&h72 [ 0 ]
Value
0
1
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Explanation of operation
Un-detecting.
Detecting
71/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
5.LEVEL DRC
When the signal below a setting detection level and continues the setting time in both L channel and R channel, Mute
function will be run. (Smooth transition mute)
Mute threshold level has hysteresis of 6dB. Small signal detect is run back channel mixer block.
PEAK
GAIN
DETECTOR
CONTROLLER
Figure 75
LEVEL
DRC input
signal
LEVEL DRC
Detect signal
&h79[1:0]
LEVEL DRC
output singnal
&h7A[3:0]
&h7A[6:4]
Figure 76
LEVEL DRC ON/OFF
Default = 1
Select Address
&h78 [4 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Value
0
1
Explanation of operation
OFF
ON
72/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
LEVEL DRC Detect level setting
Release level is +6dB of this setting.
Default=0h
Select Address
&h78 [ 3:0 ]
Explanation of operation
Command
0
1
2
3
4
5
6
7
Detect time setting
Default=3h
Select Address
&h79 [ 1:0 ]
Level
-96dB
-90dB
-84dB
-78dB
-72dB
-66dB
-60dB
-54dB
Command
8
9
A
B
C
D
E
F
Level
-48dB
-42dB
-36dB
-30dB
-
Explanation of operation
Command
0
1
2
3
Time
42.7ms
85.4ms
170.7ms
341.4ms
*Above is the value of FS=48kHz. FS=44.1kHz:Above value×1.09
LEVEL DRC smooth transition mute release time setting
Default=3h
Select Address
Explanation of operation
&h7A [6:4 ]
Command
Time
Command
0
1ms
4
1
2ms
5
2
3ms
6
3
4ms
7
Time
5ms
10ms
20ms
40ms
*Above is the value of FS=48kHz. FS=44.1kHz:Above value×1.09
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
73/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
LEVEL DRC smooth transition mutes time setting
Default=Bh
Select Address
&h7A [3:0 ]
Command
0
1
2
3
4
5
6
7
Explanation of operation
Time
0.125S
0.1825S
0.25S
0.5S
0.75S
1S
1.25S
1.5S
Command
8
9
A
B
C
D
E
F
Time
2S
2.5S
3S
4S
5S
6S
7S
8S
*Above is the value of FS=48kHz. FS=44.1kHz:Above value×1.09
LEVEL DRC Detect signal read out(Read Only)
Select Address
&h7B [ 0 ]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Value
0
1
Explanation of operation
No detect
Detect
74/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
6.Clock stop detection and detection of BCLK frequency begin too low or too high or asynchronous state detection
6-1 Clock stops detection
BM5480MUV needs some clock source for generating proper clock to process Audio data.
By stopping these cock sources, these clocks to process Audio data also stop.
To prevent noise sounds, we need to detect BCLK or LRCLK stop condition.
As we detect stop flag that is to be valid, output is gone to mute state (mute instantly).
Internal
frequency
generator
Clock stop
detecion
circuit
BCLK
Judge
OK/NG
LRCLK
Figure 77
Each detect condition is set by below command. We can check detected result by reading back flag register.
These flags are cleared only by sending specified commands.
LRCLK stop detection time
Default = 2h(LRCK)
Select Address
LRCLK &h07 [ 2:0 ]
Value
0
10μs to 20μs
Operation
1
20μs to 40μs
2
50μs to 100μs
3
100μs to 200μs
4
200μs to 400μs
5
300μs to 600μs
6
400μs to 800μs
7
500μs to 1000μs
※Detection time has the above-mentioned variation within the limits.
BCLK stop detection time
Default = 0h(BCK)
Select Address
BCLK &h08 [ 6:4 ]
Value
0
Operation
10μs to 20μs
1
20μs to 40μs
2
50μs to 100μs
3
100μs to 200μs
4
200μs to 400μs
5
300μs to 600μs
6
400μs to 800μs
7
500μs to 1000μs
※Detection time has the above-mentioned variation within the limits.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
75/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Stop detection flag read back register (Read Only)
Select Address
&h09 [ 5 ]
Value
0
&h09 [ 4 ]
Operation
Normal
1
Detection of LRCLK stop flag
0
Normal
1
Detection of BCLK stop flag
Stop detection flag clear register (Write Only)
Select Address
&h09 [ 1 ]
&h09 [ 0 ]
Operation
LRCLK stop detection flag is cleared by writing 1.
BCLK stop detection flag is cleared by writing 1.
※When using a clock shutdown auto return facility (Chapter 17), the above-mentioned flag is cleared automatically.
LRCLK stop flag valid or invalid selection
Default = 0h
Select Address
Value
&h07 [ 3 ]
0
1
BCLK stop flag valid or invalid selection
Default = 0h
Select Address
Value
&h08 [ 7 ]
0
1
Operation
Valid
Invalid
Operation
Valid
Invalid
6-2 Synchronous blank detection
As for synchronous blank detecting function, it detects as synchronous blank error when it counts between the rising edges
of LRCK with internal clock (49.152MHz), and it shifts more than the definite value, and whether PLL is normally locked is
judged.
Input sampling frequency
Count value
(Start of counting from 0)
32kHz,44.1kHz,48kHz
1023
As for the detection result, reading from the register is possible. As a result of the judgment as synchronous blank once, it is
not cleared until a clear command is transmitted even if the state of the clock returns normally. Moreover, the setting of the
detection approval frequency is also possible, and if the error more than the predetermined number is detected, the flag
(&h06[1]) becomes "1" by the command.
Synchronous blank flag reading register (Read Only)
Select Address
&h06 [ 1 ]
Value
0
1
Explanation of operation
Normal
Synchronous blank detect
Synchronous blank flag clear register(Write Only)
Select Address
&h06 [ 0 ]
Explanation of operation
When "1" is written, the synchronous blank flag is cleared.
*When the clock stop automatic return function (Chapter 7) is used, these flags are cleared by the automatic operation.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
76/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Synchronous blank count setting
Default = 2h
Select Address
&h06 [ 6:4 ]
Explanation of operation
1 or more is set. (It should be set from 1 to 7)
If synchronous blank more than the set number of count is detected, & h06[1]
becomes "1".
6-3 BCLK high or low speed detection
BCLK high or low speed detection function is that judge BCLK speed being too high or low by measuring by using internal
clock(12MHz to 25MHz).
When using a BCLK speed detection, speed failure detection can be more correctly performed by making a command set
reflect about an input sample rate.
When you validate sample rate setting, please be sure to set up the sample ring rate inputted with &h0c [1:0] command. A
high speed and the low-speed detection flag can set up validity and the disabled, respectively, and if the validated flag is
materialized, mute (mute instantly) will be carried out.
Valid or invalid frequency value setting up by &h0C[1:0] command.
Default = 0h
Select Address
&h0A [ 3 ]
Value
0
Operation
Valid
1
Invalid
Value
0
48kHz
Setting of sampling rate
Default = 0h
Select Address
&h0C [ 1:0 ]
Operation
1
44.1kHz
2
32kHz
The constraints of a high speed or a low-speed condition
Default = 0h
Select Address
&h0A [ 2 ]
Value
0
±10%
Operation
1
±20%
We can check detection result by reading back.
The result judged that is once unusual is not cleared until it transmits a clear command, even if the condition of a clock
returns to normal. We can set up
We can set up the constraints of the count of formation, and it does not set a flag until it detects it by count continuation.
BCLK high speed flag(Read Only)
Select Address
&h0A [ 1 ]
Value
0
1
Operation
Normal
High speed detection flag
BCLK low speed flag(Read Only)
Select Address
&h0B [ 1 ]
Value
0
1
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Operation
Normal
Low speed detection flag
77/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
High speed detection clears register(Write Only)
Select Address
&h0A [ 0 ]
Operation
If “1” writes in, a high speed detection flag will be cleared.
※When using a clock shutdown auto return facility (Chapter 7), the above-mentioned flag is cleared automatically.
Low speed detection clear register(Write Only)
Select Address
&h0B [ 0 ]
Operation
If “1” writes in, a high speed detection flag will be cleared.
※When using a clock shutdown auto return facility (Chapter 7), the above-mentioned flag is cleared automatically.
A constraint of the count of judging with high speed flag detection
Default = 2h
Select Address
&h0A [ 6:4 ]
Operation
Please set up one or more. (1-7 are set up) A will become "&h0A[1]=1" if the BCLK
high speed condition more than the count of setting up is detected continuously.
A constraint of the count of judging with low speed flag detection
Default = 2h
Select Address
&h0B [ 6:4 ]
Operation
Please set up one or more. (1-7 are set up) A will become "&h0B[1]=1" if the BCLK
low speed condition more than the count of setting up is detected continuously.
High speed detection flag valid or invalid
Default = 0h
Select Address
&h0A [ 7 ]
Value
0
1
Operation
Valid
Invalid
Low speed detection flag valid or invalid
Default = 0h
Select Address
&h0B [ 7 ]
Value
0
1
Operation
Valid
Invalid
The frequency range of BCLK by which high speed detection or low speed detection is carried out becomes below.
Setting1
10%(&h0A[2]=0)
Setting2
48kHz(&h0C[1:0]=0)
Low speed
Under 20.0k to 41.3kHz
High speed
Over 55.6k to 111.4kHz
44.1kHz(&h0C[1:0]=1)
Under 18.9k to 38.0kHz
Over 51.1k to 102.4kHz
32kHz(&h0C[1:0]=2)
Under 13.7k to 27.6kHz
Over 37.1k to 74.3kHz
48kHz(&h0C[1:0]=0)
Under 19.2k to 38.4kHz
Over 62.4k to 128.4kHz
44.1kHz(&h0C[1:0]=1)
Under 17,6k to 35.3kHz
Over 57.3k to 114.7kHz
32kHz(&h0C[1:0]=2)
Under 12.8k to 25.6kHz
Over 41.6k to 83.2kHz
20%(&h0A[2]=1)
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
78/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
7.Auto recovery from clock error function
Detection flag and a BCLK high speed, and low speed detection flag formation, it will be in a mute condition (mute instantly)
about an output.
In that case, if the clock error auto return facility is enabled, when it returns to a normal input, a mute condition will be
canceled automatically.
When the clock error auto return facility is repealed, it is necessary to control a series of operations called a mute-on and
flag clear command transmission, an internal-RAM-data clear, and mute release from an external microcomputer.
Since it is invalid immediately after a wake-up, &h0D[6] =1 is set up before mute release, and it recommends validating.
Valid or invalid auto recover from clock error
Default = 0h
Select Address
&h0D [ 6 ]
Value
0
1
Operation
Invalid
Valid
Each error flag can be read from the following addresses. When 1 is read from a read address, the error flag stands.
Moreover, a flag is not cleared until it writes 0 in the target address, even if error status will be canceled, once a flag leaves.
Error flag read register
Select Address
&h0E [ 6 ]
Operation
Asynchronous flag
&h0E [ 4 ]
LRCLK stop flag
&h0E [ 3 ]
BCLK stop flag
&h0E [ 2 ]
BCLK high speed detection flag
&h0E [ 1 ]
BCLK low speed detection flag
8.The wake-up Procedure of power-up
It recommends starting power-up in the following Procedures.
1. Power up
○ Wait over 10msec
2. Release reset(RSTX=H)
3. &h0C[1:0]=*h : Sampling rate(Please set up 0h in the case of 48kHz, set up 1h in the case of 44.1kHz
and 2h in 32kHz.)
○ Please input BCLK and LRCLK
4. &hE9=10h : changing clock to normal state
○ Wait over 5msec
5. &h0x01=00h : Set RAM clear OFF
6. &h0D[6]=1h : Valid auto recover from clock error
7. &h0E[7:1]=0h : Clear error flag
8. &h92[4:0]=11h : PWM setting1
9. &h93[4:0]=1Ch : PWM setting2
10. &h94[4:0]=15h : PWM setting3
11. &h95[4:0]=04h : PWM setting4
12. Please set up DSP function such as volume, PEQ, DRC, and Scalar etc.
13. MUTEX=H : Release mute
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
79/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
9.The operating procedure in a status with an unstable clock
In the segment where the input of I2S signal of BCLK, LRCLK, and SDATA may become unstable, please set to MUTEX=L
and carry out mute.
1.MUTEX=L
○ After stabilizing I2S input, it is 20 ms or more WAIT.
2.MUTEX=H
BCLK
LRCLK
SDATA
Stable
Unstable
Stable
MUTEX
Over 20ms
Soft-mute
*Chapter3
Soft-start
*Chapter3
Speaker
BTL output
(After LC filter)
Figure 78
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
80/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Application Circuit Example (Stereo BTL output, RL1=8Ω)
GNDP1
C37B
100μ F
VCCP1
C37A
GNDP1 1μ F
0.1μ F
C40
2
NC
3
NC
46
45
44
43
42
41
NC
NC
NC
NC
NC
NC
40
39
37
36
VCCP1
OUT1P
35
Driver
FET 1P
MUTEX
5
38
REG_G VCCA
RSTX
4
MUTEX
47
NC
NC
1
RSTX
48
NC
GNDP1
Driver
FET 1N
Control
I/F
R35
5.6Ω
34
OUT1N
33
R31
5.6Ω
32
μ -con
DGND
SCL
VSS
DVDD
R7 10kΩ
DVDD
SDA R8 10kΩ
I2C BUS
Address
Select
Digital
Audio
Source
7
SCL
8
SDA
DVDD
VSS
SDATA
R10 0
8 Times
OverSampling
Digital
Filter
6
9
ADDR
10
SDATA
LRCLK
R11 0
11
LRCLK
BCLK
R12 0
12
BCLK
Audio
DSP
2-wire
I/F
31
PWM
Modulator
Driver
FET 2P
VSS
REG15
TEST1
13
14
OUT2N
VCCP2
TEST2 DVDD
MONI
15
16
DVDD
VSS
VSS
27
R25
5.6Ω
26
25
19
1μ F
C17
R18
VSS 1.5kΩ
C18B
0.027μ F
20
21
10kΩ
R19
23
ERROR
VSS
L29
15μ H
C29B
1200pF
C29A
0.33μ F
GNDP2
C25A
0.33μ F
C25B
1200pF
C25C
NOP
SP ch2
(Rch)
VCCP2
C23A
DVDD 1μ F
VSS
SP ch1
(Lch)
24
100kΩ
R21
DVDD
C18A
2700pF
22
C31C
NOP
L25
15μ H
NC
18
17
R29
5.6Ω
TEST3
PLL
C13
1μ F VSS
GNDP2
ERROR
PLL
29
28
Driver
FET 2N
Protection
I2S
LJ
RJ
I/F
GNDP1
C31A
0.33μ F
C31B
1200pF
L31
15μ H
30
OUT2P
L35
15μ H
C35B
1200pF
C35A
0.33μ F
C23B
100μ F
GNDP2
Figure 79
BOM list(Stereo BTL output, RL1=8Ω)
Parts
Parts No.
Value
Company
Product No.
Inductor
L25, L29, L31, L35
15uH
TOKO
B1047AS-150M
Rated
Voltage
-
MCR03EZPJ5R6
Resister
Size
(±20%)
7.6mm×7.6mm
1/10W
J(±5%)
1.6mm×0.8mm
MCR01MZPF1501
1/16W
F(±1%)
1.0mm×0.5mm
R25, R29
R31, R35
R18
1.5kΩ
R7, R8, R19
10kΩ
MCR01MZPJ1002
1/16W
J(±5%)
1.0mm×0.5mm
R21
100kΩ
MCR01MZPJ1003
1/16W
J(±5%)
1.0mm×0.5mm
1200pF
GRM188B11H122KA01
50V
B(±10%)
1.6mm×0.8mm
2700pF
GRM033B10J272KA01
6.3V
B(±10%)
0.6mm×0.3mm
0.027uF
GRM033B10J273KE01
6.3V
B(±10%)
0.6mm×0.3mm
GRM219B31H34KA87
50V
B(±10%)
2.0mm×1.25mm
1uF
GRM21BB31H105KA12
50V
B(±10%)
2.0mm×1.25mm
1uF
GRM185B31A105KE43
10V
B(±10%)
1.6mm×0.8mm
GRM188B11A104KA92D
10V
B(±10%)
1.6mm×0.8mm
ECA1VMH101
35V
±20%
φ8mm×11.5mm
C25B, C29B
C31B, C35B
C18A
C18B
Capacitor
Tolerance
5.6Ω
C25A, C29A,
C31A, C35A,
C23A, C37A ※
C13, C17
0.33uF
C40
0.1uF
C23B, C37B
100uF
ROHM
MURATA
PANASONIC
※Please put the C23A and C37A near the VCCP1 and VCCP2 pins on the board.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
81/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Application Circuit Example (Monaural BTL output, RL1=8Ω)
GNDP1
C37B
100μ F
VCCP1
C37A
GNDP1 1μ F
0.1μ F
C40
1
RSTX
2
NC
3
NC
5
47
46
45
44
43
42
41
NC
NC
NC
NC
NC
NC
NC
40
39
38
37
REG_G VCCA
NC
36
VCCP1
OUT1P
Driver
FET 1P
RSTX
4
MUTEX
48
NC
MUTEX
34
GNDP1
Driver
FET 1N
Control
I/F
35
OUT1N
33
R35
5.6Ω
R31
5.6Ω
32
μ -con
DGND
SCL
VSS
DVDD
R7 10kΩ
DVDD
SDA R8 10kΩ
I2C BUS
Address
Select
Digital
Audio
Source
7
SCL
8
SDA
DVDD
VSS
SDATA
R10 0
8 Times
OverSampling
Digital
Filter
6
9
ADDR
10
SDATA
LRCLK
R11 0
11
BCLK
R12 0
12
LRCLK
Audio
DSP
2-wire
I/F
31
PWM
Modulator
OUT2P
REG15
TEST1
13
14
OUT2N
VCCP2
TEST2 DVDD
MONI
17
VSS
DVDD
C13
1μ F VSS
16
VSS
SP ch1
(Lch)
L31
15μ H
29
27
26
25
TEST3
PLL
15
GNDP2
ERROR
PLL
VSS
C31C
NOP
28
Driver
FET 2N
Protection
BCLK
GNDP1
C31A
0.33μ F
C31B
1200pF
30
Driver
FET 2P
I2S
LJ
RJ
I/F
L35
15μ H
C35B
1200pF
C35A
0.33μ F
NC
18
1μ F
C17
R18
VSS 1.5kΩ
C18B
0.027μ F
19
20
21
10kΩ
R19
23
24
100kΩ
R21
DVDD
C18A
2700pF
22
VSS
DVDD
GNDP2
ERROR
VSS
Figure 80
BOM list(Monaural BTL output, RL1=8Ω)
Parts
Inductor
Resister
Capacitor
Parts No.
Value
Company
TOKO
L31, L35
15uH
R31, R35
5.6Ω
R18
1.5kΩ
R7, R8, R19
10kΩ
ROHM
B1047AS-150M
Rated
Voltage
-
(±20%)
7.6mm×7.6mm
MCR03EZPJ5R6
1/10W
J(±5%)
1.6mm×0.8mm
MCR01MZPF1501
1/16W
F(±1%)
1.0mm×0.5mm
MCR01MZPJ1002
1/16W
J(±5%)
1.0mm×0.5mm
Product No.
Tolerance
Size
R21
100kΩ
MCR01MZPJ1003
1/16W
J(±5%)
1.0mm×0.5mm
C31B, C35B
1200pF
GRM188B11H122KA01
50V
B(±10%)
1.6mm×0.8mm
C18A
2700pF
GRM033B10J272KA01
6.3V
B(±10%)
0.6mm×0.3mm
C18B
0.027uF
GRM033B10J273KE01
6.3V
B(±10%)
0.6mm×0.3mm
GRM219B31H34KA87
50V
B(±10%)
2.0mm×1.25mm
C31A, C35A,
0.33uF
MURATA
C37A ※
1uF
GRM21BB31H105KA12
50V
B(±10%)
2.0mm×1.25mm
C13, C17
1uF
GRM185B31A105KE43
10V
B(±10%)
1.6mm×0.8mm
C40
0.1uF
GRM188B11A104KA92D
10V
B(±10%)
1.6mm×0.8mm
C37B
100uF
ECA1VMH101
35V
±20%
φ8mm×11.5mm
PANASONIC
※Please put the C37A near the VCCP1 pins on the board.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
82/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Selection of Components Externally Connected
1) Output LC Filter Circuit
An output filter is required to eliminate radio-frequency components exceeding the audio-frequency region supplied to a
load (speaker). Because this IC uses sampling clock frequencies from 256kHz(fs=32kHz) to 384kHz(fs=48kHz) in the
output PWM signals, the high-frequency components must be appropriately removed.
This section takes an example of an LC type LPF shown below, in which coil L and capacitor C compose a differential filter
with an attenuation property of -12dB/oct. A large part of switching currents flow to capacitor C, and only a small part of the
currents flow to speaker RL1. This filter reduces unwanted emission this way. In addition, coil L and capacitor Cg composes
a filter against in-phase components, reducing unwanted emission further.
L
2 9 ,3 0
or
3 5 ,3 6
C
R L1
C
2 5 ,2 6
or
3 1 ,3 2
L
Figure 81
Following presents output LC filter constants with typical load impedances.
RL
L
C
4Ω
10μH
1μF
6Ω
8Ω
10μH
15μH
0.33μF
0.33μF
Use coils with a low direct-current resistance and with a sufficient margin of allowable currents. A high direct-current
resistance causes power losses. In addition, select a closed magnetic circuit type product in normal cases to prevent
unwanted emission.
Use capacitors with a low equivalent series resistance, and good impedance characteristics at high frequency ranges
(100kHz or higher). Also, select an item with sufficient withstand voltage because flowing massive amount of
high-frequency currents is expected.
2) The value of the LC filter circuit computed equation
The output LC filter circuit of BD5452AMUV is as it is shown in Figure 82. The LC filter circuit of Figure 82 is thought to
substitute it like Figure 83 on the occasion of the computation of the value of the LC filter circuit.
L
OUT+
C
OUT+
or
OUT-
1
R = 2 RL
L
C
C
OUT-
RL
L
Figure 82. Output LCfilter 1
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
83/94
Figure 83. Output LCfilter 2
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
The transfer function H(s) of the LC filter circuit of Figure 83 becomes the following.
1
2
LC
H (s) 

1
1

s2 
s
s2  s  2
CR
LC
Q
TheΩand Q become the followings here.
ω2 =
ω = 2πfCL
1
LC
fCL =
1
2π LC
C 1
C
Q =R
= R
L 2 L L
Therefore, L and C become the followings.
L=
1
2
ω C
=
RL
4πfCLQ
C=
Q
Q
=
ωR πfCLRL
The RL and L should be made known, and fCL is set up, and C is decided.
3) The settlement of the L value of the coil
A standard for selection of the L value of a coil to use is to take the following back anti-matter into
consideration except for the factor such as a low cost-ization, miniaturization, pale pattern.
①When L value was made small.
(1) Circuit electric currents increase without a signal. And, efficiency in the low output gets bad.
(2) Direct current resistance value is restrained small when the coil of other L value and size are made the same.
Therefore, maximum output is easy to take out. And, it can be used in the low power supply voltage because DC
electric current (allowable electric current) value can be taken greatly.
②When L value was made large.
(1) Circuit electric current is restrained low without a signal. Efficiency in the low output improves.
(2) Direct current resistance value grows big when the coil of other L value and size are made the same. Therefore,
maximum output is hard to take out. And, because it becomes small, use becomes difficult 【 the DC electric
current (allowable electric current) value 】 in the low power supply voltage, too.
4) The settlement of the fCL
As for the settlement of the fixed number of the LC filter circuit, it is taken into consideration about two points of the
following, and set up.
①The PWM sampling frequency fPWM (=8fS) of BM5480MUV is set up in 384kHz (@fS=48kHz).
It is set up with fC < fPWM to restrain career frequency omission after the LC filter circuit.
②When fc is lowered too much, the voltage profit of the voice obi stage (especially, the neighborhood of 20kHz)
declines in the speaker output frequency character of the difference movement mode.
And, the speaker output frequency character of the difference movement mode becomes the following.
L[uH]
10
15
22
RL=8Ω
C[uF]
fc[kHz]
0.1
75.32
0.15
80.85
0.22
86.79
0.33
89.92
0.47
86.79
1.0
69.01
0.1
46.99
0.15
49.66
0.22
53.46
0.33
57.54
0.47
59.7
1.0
52.75
0.1
30.76
0.15
31.92
0.22
33.73
0.33
36.31
0.47
39.08
1.0
39.30
Q
0.40
0.49
0.59
0.73
0.87
1.26
0.33
0.40
0.48
0.59
0.71
1.03
0.27
0.33
0.40
0.49
0.58
0.85
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
L[uH]
10
15
22
RL=6Ω
C[uF]
fc[kHz]
0.1
51.01
0.15
54.76
0.22
56.73
0.33
63.1
0.47
66.68
1.0
62.29
0.1
33.11
0.15
34.36
0.22
35.65
0.33
38.37
0.47
41.3
1.0
44.67
0.1
22.49
0.15
22.91
0.22
23.77
0.33
24.66
0.47
26.06
1.0
30.05
84/94
Q
0.30
0.37
0.44
0.54
0.65
0.95
0.24
0.30
0.36
0.44
0.53
0.77
0.20
0.25
0.30
0.37
0.44
0.64
L[uH]
10
15
22
RL=4Ω
C[uF]
fc[kHz]
0.1
32.19
0.15
33.35
0.22
34.55
0.33
35.8
0.47
38.37
1.0
44.1
0.1
21.68
0.15
22.08
0.22
22.49
0.33
22.91
0.47
23.77
1.0
27.47
0.1
14.72
0.15
14.72
0.22
15
0.33
15.28
0.47
15.56
1.0
17.33
Q
0.20
0.24
0.30
0.36
0.43
0.63
0.16
0.20
0.24
0.30
0.35
0.52
0.13
0.17
0.20
0.24
0.29
0.43
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
5) About the EMI countermeasure
As a part EMI countermeasure except for the output LC filter recommended with P.81/93 to P.82/93,
It can be confirmed with following;
・Chip Common Mode Choke Coil( DLY5ATN401 ) manufactured by Murata +1000pF(50V,Tolerance:B,1608),
・Chip inductor LCC3225T2R2MR manufactured by TAIYOYUDEN +1000pF(50V,Tolerance:B,1608)
6) The settlement of the snubber
The Snubber circuit must be optimized for application circuit to reduce the overshoot and undershoot of output PWM.
① Measure the spike resonance frequency f1 of the PWM output wave shape (When it stands up.) by using
FET probe in the OUT terminal. (Figure 35) The FET probe is to monitor very near pin and shorten ground lead
at the time of that.
② Measure resonance frequency f2 of the spike as a snubber circuit fixed number R=0Ω (Only with the condenser
C, to connect GND) At this time, the value of the condenser C is adjusted until it becomes half of the frequency
(2f2=f1) of the resonance frequency f1 of ①. The value of C which it could get here is three times of the parasitic
capacity Cp that a spike is formed. (C=3Cp)
③ Parasitic inductance Lp is looked for at the next formula.
1
Lp 
2f1 2 C p
④ The character impedance Z of resonance is looked for from the parasitic capacity Cp and the parasitism
inductance Lp at the next formula.
Z
Lp
Cp
⑤ A snubber circuit fixed number R is set up in the value which is the same as the character impedance Z.
A snubber circuit fixed number C is set up in the value of 4-10 times of the parasitic capacity Cp. (C=4Cp to
10Cp) Decide it with trade-off with the character because switching electric currents increase when the value of C is
enlarged too much.
VCCP
spike resonance frequency
Snubber
LCfilter
OUT
Driver
5nsec/div
C
R
GNDP
Figure 84. PWM Output waveform
GNDP
GNDP
Figure 85. snubber schematic
(measure of spike resonance frequency
Following presents Snubber filter constants with the recommendation value at ROHM 4 layer board.
RL
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
4Ω
6Ω
C25B,C29B,
C31B,C35B
3300pF
3300pF
R25,R29,
R31,R35
5.6Ω
5.6Ω
8Ω
1200pF
5.6Ω
85/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Level Diagram of Audio Signal
Level diagram of audio signal is shown the below figure. Speaker output level is depended on I2S digital audio input level,
DSP gain, PWM gain, BTL gain and Loss of power stage and low pass filter.
I2S input level is full-scale signal, the supply voltage of the block is DVDD, and therefore, 0dBFS is equal to DVDD voltage
[Vpp]. DSP gain is set by 2 wire control variably, and -0.5dB is set at PWM Modulator block usually. At the Power stage, the
PWM Modulator output is shifted PWM signal level from DVDD to VCC, and added loss of the output transistor resistance
rDS and DC resistance of coil rDC.
(2) PWM Gain
10
(1) DSP Gain
(
GD- 0.5
)
20
VCC
2 2
I2S Input Level
10
(
3.3V PWM signal
VIN
)
20
(3) Loss of
rDS and rDC
RL
2( rDS  rDC )  RL
10~26V
PWM signal
SDATA
LRCLK
24
I2S-IF
BCLK
24
24
Sync.
SRC
Audio
DSP
24
24
x8 over
Sampling
DF
24
24
PWM
Modulator
24
Power
Stage
(4) BTL Gain
(×2)
Output
LPF
Output
LPF
L+
LR+
R-
Figure 86. Level Diagram of Audio Signal
VCC
VCC
ON
rDS
rDC
OFF
rDC
RL
OFF
Cg
Cg
rDS
ON
Figure 87. Output LPF circuit
In Bridge-Tied-Load (BTL) connection, the following formula gives an approximate value of output power Po at non-clipping
output waveform:
I2S Input
Level
( 10
PO =
VIN
20
DSP Gain
× 10 (GD-0.5 ) 20 ×
PWM
Gain
BTL
Gain
Loss of rDS and rDC
VCC
RL
×2 ×
)2
2 ×( rDS + rDC ) + R L
2 2
RL
VIN : I2S Input level [dBFS]
GD : DSP gain [dB]
VCC : Power supply voltage of Power stage [V]
DVDD : Power supply voltage of DSP block [V]
RL : Load impedance [Ω]
rDS : Turn-on resistance of output MOS Tr. [Ω]
(typ.=180mΩ)
rDC : DC resistance of output LPF coil [Ω]
If the circuit is driven further until an output waveform is clipped, an output power higher than that without distortion is
obtained. In general a clipped output is quantified where “THD+N = 1% and 10%,” and a maximum output power under that
status is calculated by the following formula:
( 10 ( -0.5 20 ) ×
PO( 1%) =
RL
VCC
×
)2
2( rDS + rDC ) + R L
2
[W ]
RL
PO( 10 %) =PO( 1%)×1.25 [W]
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
86/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Power Dissipation (VQFN048V7070)
5
VQFN048V7070
Package
VQFN048V7070 パッケージ
PCB ④ 4.8W
PCB ③ 4.3W
Power dissi pation :Pd(W)
4
PCB ② 3.28W
3
2
PCB ① 1.16W
1
0
0
10
20
30
40
50
60
70
80
90
100 110 120 130 140 150
Ambient temperature :Ta(℃)
Figure 88
Measuring instrument: TH-156 (Shibukawa Kuwano Electrical Instruments Co., Ltd.)
Measuring conditions: Installation on ROHM's board
Board size: 114.3mm × 76.2mm × 1.6mm (with thermal via on board)
Material: FR4
・The board and exposed heat sink on the back of package are connected by soldering.
PCB (1): 1- layer board (back copper foil size: 34.09mm2), θja = 107.8°C/W
PCB (2): 2- layer board (back copper foil size: 5505mm2), θja = 38.1°C /W
PCB (3): 4- layer board (Top and bottom layer back copper foil size: 34.09mm2, 2nd and 3rd layer
back copper foil size: 5505mm2), θja = 29.1°C /W
PCB (4): 4- layer board (back copper foil size: 5505mm2), θja = 25.9°C /W
Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions.
This IC exposes its frame of the backside of package. Note that this part is assumed to use after providing heat dissipation
treatment to improve heat dissipation efficiency. Try to occupy as wide as possible with heat dissipation pattern not only on
the board surface but also the backside.
Full Digital speaker amplifier is high efficiency and low heat generation by comparison with conventional Analog power
amplifier. However, In case it is operated continuously by maximum output power, Power dissipation (Pdiss) might exceed
package dissipation. Please consider about heat design that Power dissipation (Pdiss) does not exceed Package
dissipation (Pd) in average power (Poav). (Tjmax :Maximum junction temperature=150°C, Ta :Peripheral temperature[°C],
θja :Thermal resistance of package[°C /W], Poav:Average power[W], η:Efficiency)
Package dissipation : Pd (W) =(Tjmax – Ta) / θja
Power dissipation : Pdiss (W) = Poav x (1/η – 1)
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
87/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
I/O equivalence circuit (Provided pin voltages are typ. Values)
Pin
No.
4
Pin name
RSTX
Pin voltage
0V
Pin explanation
Reset pin for Digital circuit
Internal equivalence circuit
17
H:Reset OFF
L:Reset ON
4,5
5
MUTEX
0V
Speaker output mute control pin
H:Mute OFF
L:Mute ON
GND pin for Digital I/O
6
2 wire transmit clock input pin
・Please notice.
Absolute Maximum Voltage is 4.5V.
7
6
DGND
0V
7
SCL
-
-
6
8
SDA
-
2 wire data input/output pin
・Please notice.
Absolute Maximum Voltage is 4.5V.
8
6
9
ADDR
0V
2 wire Slave address select pin
17
9
6
10
11
12
SDATA
LRCLK
BCLK
3.3V
Digital sound signal input pin
17
10,11,
12
6
19
MONI
3.3V
TEST pin.
13
Please pull up to DVDD.
10
9
15
VSS
0V
GND pin for Digital block
18
PLL
1V
PLL’s filter pin
-
17
18
6
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
88/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
I/O equivalence circuit (Provided pin voltages are typ. Values)
Pin
No.
17
DVDD
14
16
TEST1
TEST2
Pin name
Pin
voltage
3.3V
-
-
Pin explanation
Internal equivalence circuit
-
Power supply pin for Digital I/O.
Test pin
17
Please connect to VSS.
14,16
6
13
REG15
1.5V
Internal power supply pin for Digital
circuit
17
13
6
20
TEST3
-
Test pin
17
Please connect to VSS.
20
6
21
ERROR
3.3V
Error flag pin
17
H: While Normal
L: While Error
500
21
6
22
41
42
43
44
45
46
47
48
1
2
3
NC
-
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
Non Connection Pin
89/94
-
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
I/O equivalence circuit (Provided pin voltages are typ. Values)
Pin
No.
23
24
25
26
27
28
29
30
Pin name
Pin voltage
Pin explanation
VCCP2
VCC
OUT2N
VCC to 0V
Output pin of ch2 positive PWM
GNDP2
0V
Please connect to Output LPF.
GND pin for ch2 PWM signal
OUT2P
VCC to 0V
Internal equivalence circuit
Power supply pin for ch2 PWM signal
23,24
25,26
29,30
Output pin of ch2 negative PWM
Please connect to Output LPF.
27,28
31
32
OUT1N
VCC to 0V
Output pin of ch1 negative PWM
37,38
Please connect to Output LPF.
33
34
35
36
GNDP1
OUT1P
0V
VCC to 0V
GND pin for ch1 PWM signal
31,32
35,36
Output pin of ch1 positive PWM
Please connect to Output LPF.
s37
38
VCCP1
VCC
Power supply pin for ch1 PWM signal
39
VCCA
VCC
Power supply pin for Analog signal
40
REG_G
5.5V
Internal power supply pin for gate driver
33,34
-
39
Please connect the capacitor.
40
100K
6
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
90/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Operational Notes
1.
Reverse Connection of Power Supply
Connecting the power supply in reverse polarity can damage the IC. Take precautions against reverse polarity when
connecting the power supply, such as mounting an external diode between the power supply and the IC’s power supply
pins.
2.
Power Supply Lines
Design the PCB layout pattern to provide low impedance supply lines. Separate the ground and supply lines of the
digital and analog blocks to prevent noise in the ground and supply lines of the digital block from affecting the analog
block. Furthermore, connect a capacitor to ground at all power supply pins. Consider the effect of temperature and aging
on the capacitance value when using electrolytic capacitors.
3.
Ground Voltage
Ensure that no pins are at a voltage below that of the ground pin at any time, even during transient condition.
4.
Ground Wiring Pattern
When using both small-signal and large-current ground traces, the two ground traces should be routed separately but
connected to a single ground at the reference point of the application board to avoid fluctuations in the small-signal
ground caused by large currents. Also ensure that the ground traces of external components do not cause variations on
the ground voltage. The ground lines must be as short and thick as possible to reduce line impedance.
5.
Thermal Consideration
Should by any chance the power dissipation rating be exceeded the rise in temperature of the chip may result in
deterioration of the properties of the chip. The absolute maximum rating of the Pd stated in this specification is when the
IC is mounted on a 70mm x 70mm x 1.6mm glass epoxy board. In case of exceeding this absolute maximum rating,
increase the board size and copper area to prevent exceeding the Pd rating.
6.
Recommended Operating Conditions
These conditions represent a range within which the expected characteristics of the IC can be approximately obtained.
The electrical characteristics are guaranteed under the conditions of each parameter.
7.
Inrush Current
When power is first supplied to the IC, it is possible that the internal logic may be unstable and inrush current may flow
instantaneously due to the internal powering sequence and delays, especially if the IC has more than one power supply.
Therefore, give special consideration to power coupling capacitance, power wiring, width of ground wiring, and routing of
connections.
8.
Operation Under Strong Electromagnetic Field
Operating the IC in the presence of a strong electromagnetic field may cause the IC to malfunction.
9.
Testing on Application Boards
When testing the IC on an application board, connecting a capacitor directly to a low-impedance output pin may subject
the IC to stress. Always discharge capacitors completely after each process or step. The IC’s power supply should
always be turned OFF completely before connecting or removing it from the test setup during the inspection process. To
prevent damage from static discharge, ground the IC during assembly and use similar precautions during transport and
storage.
10. Inter-pin Short and Mounting Errors
Ensure that the direction and position are correct when mounting the IC on the PCB. Incorrect mounting may result in
damaging the IC. Avoid nearby pins being shorted to each other especially to ground, power supply and output pin.
Inter-pin shorts could be due to many reasons such as metal particles, water droplets (in very humid environment) and
unintentional solder bridge deposited in between pins during assembly to name a few.
11. Unused Input Pins
Input pins of an IC are often connected to the gate of a MOS transistor. The gate has extremely high impedance and
extremely low capacitance. If left unconnected, the electric field from the outside can easily charge it. The small charge
acquired in this way is enough to produce a significant effect on the conduction through the transistor and cause
unexpected operation of the IC. So unless otherwise specified, unused input pins should be connected to the power
supply or ground line.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
91/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Operational Notes – continued
12. Regarding the Input Pin of the IC
This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them
isolated. P-N junctions are formed at the intersection of the P layers with the N layers of other elements, creating a
parasitic diode or transistor. For example (refer to figure below):
When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode.
When GND > Pin B, the P-N junction operates as a parasitic transistor.
Parasitic diodes inevitably occur in the structure of the IC. The operation of parasitic diodes can result in mutual
interference among circuits, operational faults, or physical damage. Therefore, conditions that cause these diodes to
operate, such as applying a voltage lower than the GND voltage to an input pin (and thus to the P substrate) should be
avoided.
Resistor
Transistor (NPN)
Pin A
Pin B
C
E
Pin A
N
P+
P
N
N
P+
N
Pin B
B
Parasitic
Elements
N
P+
N P
N
P+
B
N
C
E
Parasitic
Elements
P Substrate
P Substrate
GND
GND
Parasitic
Elements
GND
Parasitic
Elements
GND
N Region
close-by
Figure 78. Example of Monolithic IC Structure
13. Ceramic Capacitor
When using a ceramic capacitor, determine the dielectric constant considering the change of capacitance with
temperature and the decrease in nominal capacitance due to DC bias and others.
14. Area of Safe Operation (ASO)
Operate the IC such that the output voltage, output current, and power dissipation are all within the Area of Safe
Operation (ASO).
15. Thermal Shutdown Circuit(TSD)
This IC has a built-in thermal shutdown circuit that prevents heat damage to the IC. Normal operation should always be
within the IC’s power dissipation rating. If however the rating is exceeded for a continued period, the junction
temperature (Tj) will rise which will activate the TSD circuit that will turn OFF all output pins. When the Tj falls below the
TSD threshold, the circuits are automatically restored to normal operation.
Note that the TSD circuit operates in a situation that exceeds the absolute maximum ratings and therefore, under no
circumstances, should the TSD circuit be used in a set design or for any purpose other than protecting the IC from heat
damage.
16. Over-Current Protection Circuit (OCP)
This IC incorporates an integrated overcurrent protection circuit that is activated when the load is shorted. This protection
circuit is effective in preventing damage due to sudden and unexpected incidents. However, the IC should not be used in
applications characterized by continuous operation or transitioning of the protection circuit.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
92/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Ordering Information
B
M
5
4
8
Part Number
0
M
U
V
-
E2
Package
MUV: VQFN48V7070P
Packaging and forming specification
E2: Embossed tape and reel
Marking Diagram
VQFN48V7070P (TOP VIEW)
Part Number Marking
BM5480MU
LOT Number
1PIN MARK
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
93/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
BM5480MUV
Physical Dimension, Tape and Reel Information
Package Name
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
VQFN048V7070P
94/94
TSZ02201-0C1C0E900330-1-2
20.Oct.2015 Rev.004
Datasheet
Notice
Precaution on using ROHM Products
1.
Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
(Note 1)
, transport
intend to use our Products in devices requiring extremely high reliability (such as medical equipment
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅣ
CLASSⅢ
2.
ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3.
Our Products are designed and manufactured for use under standard conditions and not under any special or
extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any
special or extraordinary environments or conditions. If you intend to use our Products under any special or
extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of
product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4.
The Products are not subject to radiation-proof design.
5.
Please verify and confirm characteristics of the final or mounted products in using the Products.
6.
In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7.
De-rate Power Dissipation depending on ambient temperature. When used in sealed area, confirm that it is the use in
the range that does not exceed the maximum junction temperature.
8.
Confirm that operation temperature is within the specified range described in the product specification.
9.
ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1.
When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2.
In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must
be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products,
please consult with the ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice-PGA-E
© 2015 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
Precautions Regarding Application Examples and External Circuits
1.
If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2.
You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1.
Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2.
Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3.
Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4.
Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign
trade act, please consult with ROHM in case of export.
Precaution Regarding Intellectual Property Rights
1.
All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data.
2.
ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the
Products with other articles such as components, circuits, systems or external equipment (including software).
3.
No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the Products or the information contained in this document. Provided, however, that ROHM
will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to
manufacture or sell products containing the Products, subject to the terms and conditions herein.
Other Precaution
1.
This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2.
The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3.
In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4.
The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
Notice-PGA-E
© 2015 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3.
The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or
liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or
concerning such information.
Notice – WE
© 2015 ROHM Co., Ltd. All rights reserved.
Rev.001
Similar pages