Datasheet CXA2134Q Datasheet (Sony)

Page 1
US Audio Multiplexing Decoder
Description
The CXA2134Q is an IC designed as a decoder for the Zenith TV Multi-channel System and also corresponds with I2C bus. Functions include stereo demodulation, SAP (Separate Audio Program) demodulation, dbx noise reduction and sound processor. Various kinds of filters are built in this IC. Adjustment, mode control and sound processor control are all executed through I2C bus.
Features
• Alignment-free VCO and filter
• Audio multiplexing decoder
dbx noise reduction decoder
sound processor
— Two external inputs
— Quasi-surround
— Bass control
— Treble control
— Volume control
are all included in a single chip. Almost any soft of
signal processing is possible through this IC.
• Input level, separation adjustments and each mode
control are possible through I2C bus.
Applications
TV, VCR and other decoding systems for US audio
multiplexing TV broadcasting
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage VCC 11 V
• Operating temperature Topr –20 to +75 °C
• Storage temperature Tstg –65 to +150 °C
• Allowable power dissipation
PD 0.6 W
Range of Operating Supply Voltage
9 ± 0.5 V
– 1 –
E99832-PS
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
CXA2134Q
48 pin QFP (Plastic)
∗
A license of the dbx-TV noise reduction system is required for the use of this device.
Page 2
– 2 –
CXA2134Q
Block Diagram
VGR
IREF
DGND
SCL
SDA
SAPOUT
SAPIN
STIN
VE
VEWGT
VETC
VEOUT
VCAIN
VCAWGT
VCATC
MAININ
MAINOUT
SUBOUT
PLINT
PCINT1
COMPIN
V
CC
GND
NOISETC
SAPTC
AUX2-L
IREF
SW
LPF LPF
HPF
RMSDET
RMSDET
VCA
VE
DeEm
LOGIC
MATRIX
VCA
LPF
LPF
1/21/4VCOLFLT
VCA LPF
BPF
SAPVCO
LPF
NOISE
DET
SAPIND
"PONRES"
STIND
"SAP"
"NOISE"
NRSW/FOMO/SAPC
WIDEBAND
SPECTRAL
"STEREO"
DeEm
FLT
AMP
(+4dB)
I
2
C BUS I/F
(+6dB)
LSOUT-L
LSOUT-R
VOL-L
VOL-R
VOL-L
VOL-R
TREB
SURROUND
TREBLE
TREB
AUX1-R AUX1-L
AUX2-R
BASS-R
TRE-L
TRE-R
VOLIN-R
PCINT2
BASS
BASS
BASS
TVSW
SURRTC
BASS-L
TVOUT-L
TVOUT-R
FEXT2
FEXT1
EXT1/EXT2/M1
TOUT-R
ATT/ATTSW
28 27
26
8
9
21
19
17
23
18
24
25
22
SURR
M2
TOUT-L
VOLIN-L
13
10
11
12
34
33
37
36
39
38
40
2
45
47
41
44
43
3
4
48 1
31 32
30 29
5
6
7
1514
Page 3
– 3 –
CXA2134Q
Pin Configuration (Top View)
25
26
27
28
29
30
36
35
34
31
32
33
AUX2-R
NC
AUX1-L
AUX1-R
VCAWGT
VCATC
VCAIN
VEOUT
VETC
VEWGT
VE
SAPIN
2
3
4
5
6
7
8
9
10
11
121
TOUT-L
BASS-L
LSOUT-R
SDA
SCL
DGND
PLINT
PCINT1
MAINOUT
MAININ
LSOUT-L
PCINT2
13
14
15
16
17
18
19
20
21
22
23
24
COMPIN
VGR
NC
GND
SAPTC
NC
STIN
NOISETC
IREF
V
CC
SAPOUT
SUBOUT
40
39
38
37
41
42
43 44 45 46 47 48
VOLIN-L
TRE-L
NC
BASS-R
SURRTC
TOUT-R
NC
TRE-R
TVOUT-L
TVOUT-R
AUX2-L
VOLIN-R
Page 4
– 4 –
CXA2134Q
Pin Description (Ta = 25°C, Vcc = 9V)
Pin No.
Symbol
Pin
voltage
Equivalent circuit
Description
580
VCC
580
44
1
147
1
44
4.0V
4.0V
TOUT-L
TOUT-R
Treble output pin. (Left channel)
Treble output pin. (Right channel)
1.2k
5.4k
11k
1.2k
11k
147
2
45
Vcc
4V
2
45
4.0V
4.0V
BASS-L
BASS-R
Bass filter pin. (Left channel)
Bass filter pin. (Right channel)
580
580
VCC
3k
3 4
3
4
4.0V
4.0V
LSOUT-R
LSOUT-L
LSOUT right channel output pin.
LSOUT left channel output pin.
5
—SDA
Serial data I/O pin. VIH > 3.0V VIL < 1.5V
7.5k
4.5k
× 5
4k
3k
7.5k
V
CC
↓ 35µ
2.1V
× 2
5
Page 5
– 5 –
CXA2134Q
6
—
SCL
Serial clock input pin. VIH > 3.0V VIL < 1.5V
7
—
DGND Digital block GND.
8
4.0V
MAININ
Input pin of (L + R) signal from MAINOUT (Pin 9).
9
4.0V
MAINOUT
(L + R) signal output pin.
7
VCC
147
10k
53k
4V
VCC
8
147
1k
15k
↓
200µ
V
CC
× 4
9
Pin No.
Symbol
Pin
voltage
Equivalent circuit
Description
10.5k
VCC
4k
× 4
3k
7.5k
↓ 35µ
2.1V
6
Page 6
– 6 –
CXA2134Q
10
4.0V
PCINT1
11
4.0V
PCINT2
Stereo block PLL loop filter integrating pin.
12
5.1V
PLINT
Pilot cancel circuit loop filter integrating pin. (Connect a 1µF capacitor between this pin and GND.)
13
4.0V
COMPIN
Audio multiplexing signal input pin.
4k
VCC
× 2
10k
10k
2k
147
11
VCC
147
20k
20k
10k
20k
20k
20k
12
VCC
22k
3V
20k
4k 4k 4k 16k
24k
50k 147
3k
13
Pin No.
Symbol
Pin
voltage
Equivalent circuit
Description
VCC
147
10
30k
22k
Page 7
– 7 –
CXA2134Q
14
1.3V
VGR
Band gap reference output pin. (Connect a 10µF capacitor between this pin and GND.)
40k 40k 30k
30p 1.8k
16k
6.3k
147
30k 15k 30k
VCC
× 2
V
CC
15
15
1.3V
IREF
Set the filter and VCO reference current. The reference current is adjusted with the BUS DATA based on the current which flows to this pin. (Connect a 62kΩ (±1%) resistor between this pin and GND.)
17
—
GND Analog block GND.
17
19
—
Vcc Supply voltage pin.
19
18
4.5V
SAPTC
Set the time constant for the SAP carrier detection circuit. (Connect a 4.7µF capacitor between this pin and GND.)
8k
4k
3k
10k
V
CC
↓ 50µ
1k
VCC
18
Pin No.
Symbol
Pin
voltage
Equivalent circuit
Description
11k
3k
9.7k
2.06k
19.4k
× 4
14
VCC
147
11k
11k
Page 8
– 8 –
CXA2134Q
21
4.0V
SUBOUT (L – R) signal output pin.
23
3.0V
NOISETC
Set the time constant for the noise detection circuit. (Connect a 4.7µF capacitor between this pin and GND.)
24
4.0V
SAPOUT SAP FM detector output pin.
25
4.0V
SAPIN
Input pin of (SAP) signal from SUPOUT (Pin 24).
22
4.0V
STIN
Input pin of (L – R) signal from SUBOUT (Pin 21).
3k
3k
3.3k
4k
4V
Vcc
8k
× 2
10k
1k
2k
Vcc
200k
23
24k ↓ 10µ
580
Vcc
5P
580
4k ↓ 50µ
10k
147
24
Pin No.
Symbol
Pin
voltage
Equivalent circuit
Description
22
2k 2k
2k
147
18k
4V
23k
2k2k
14.4k
4k
11.7k
20k
23k
580
580
4V
10P 4k
147
1k
147
18k
Vcc
21
VCC
25
Page 9
– 9 –
CXA2134Q
26
4.0V
VE
Variable de-emphasis integrating pin. (Connect a 2700pF capacitor and a 3.3kΩ resistor in series between this pin and GND.)
Vcc
4V
36k
2.9V
580
147
580
8k
30k ↓ 8µ
4k ↓ 50µ
27
27
4.0V
VEWGT
Weight the variable de-emphasis control effective value detection circuit. (Connect a 0.047µF capacitor and a 3kΩ resistor in series between this pin and GND.)
20k ↓ 7.5µ
4k ↓ 50µ
Vcc
× 4
× 4
28
28
1.7V
VETC
Determine the restoration time constant of the variable de-emphasis control effective value detection circuit. (The specified restoration time constant can be obtained by connecting a
3.3µF capacitor between this pin and GND.)
Vcc
10k
580
580
5P
29
29
4.0V
VEOUT
Variable de-emphasis output pin. (Connect a 4.7µF non-polar capacitor between Pins 29 and 30.)
Pin No.
Symbol
Pin
voltage
Equivalent circuit
Description
147
26
VCC
7.5k
Page 10
– 10 –
CXA2134Q
30
4.0VVCAIN
VCA input pin. Input the variable de-emphasis output signal from Pin 29 via a coupling capacitor.
↓
50µ
VCC
4k
20k
× 4
× 4
↓
7.5µ
31
31
1.7VVCATC
Determine the restoration time constant of the VCA control effective value detection circuit. (The specified restoration time constant can be obtained by connecting a 10µF capacitor between this pin and GND.)
4k
VCC
30k 8k
36k
2.9V
3p
580
580
147
40k 40k
↓
50µ
↓
8µ
32
VCC
4V
27.5k
27.5k
147
10k
33
34 36 37
32
4.0VVCAWGT
Weight the VCA control effective value detection circuit. (Connect a 1µF capacitor and a 3.9kΩ resistor in series between this pin and GND.)
33
4.0VAUX1-R
Right channel external input 1 pin.
34
4.0VAUX1-L
Left channel external input 1 pin.
36
4.0VAUX2-R
Right channel external input 2 pin.
37
4.0VAUX2-L
Left channel external input 2 pin.
Pin No.
Symbol
Pin
voltage
Equivalent circuit
Description
VCC
47k
20k
VCC
30
47k
Page 11
– 11 –
CXA2134Q
38
4.0VTVOUT-R
TVOUT right channel output pin.
39
4.0VTVOUT-L
TVOUT left channel output pin.
40
4.0V
SURRTC
Set the center frequency of the Surround circuit phase shifter. The frequency is determined by the built-in resistor and the external capacitor. (Connect a 0.022µF capacitor between this pin and GND.)
43
4.0V
VOLIN-R
Volume right channel input pin.
48
4.0V
VOLIN-L
Volume left channel input pin.
16 20 35 42 46
—
NC
1.2k6k1.2k
147
Vcc
5.7k
5.7k
41
47
41
4.0VTRE-R
Treble filter pin. (Right channel)
47
4.0VTRE-L
Treble filter pin. (Left channel)
VCC
4V
66k
147
10k
43
48
Pin No.
Symbol
Pin
voltage
Equivalent circuit
Description
40
147
38
39
20k
580
580
10k
20k
3k
24k
VCC
580
580
VCC
40k
Page 12
– 12 –
CXA2134Q
Electrical Characteristics
COMPIN input level
(100% modulation level)
(Ta = 25°C, V
CC = 9V)
Main (L + R) (Pre-Emphasis: OFF) = 245mVrms
SUB (L – R) (dbx-TV: OFF) = 490mVrms
Pilot = 49mVrms
SAP Carrier = 147mVrms
f
H = 15.734kHz
Item
Current consumption
Main output level
Main de-emphasis
frequency response
Main LPF frequency
response
Main distortion
Main overload distortion
Main S/N
Sub output level
Sub LPF frequency
response
Sub distortion
Sub overload distortion
Sub S/N
Crosstalk
Stereo → SAP
Sub pilot leak
Stereo ON level
Stereo ON/OFF
hysteresis
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Signal
Icc
Vmain
FCdeem
FCmain
THDm
THDmmax
SNmain
Vsub
FCsub
THDsub
THDsmax
SNsub
CTst
PCsub
THst
HYst
Mode
MONO
MONO
MONO
MONO
MONO
MONO
ST
ST
ST
ST
ST
SAP
ST
ST
Input pin
—
13
13
13
13
13
13
13
13
13
13
13
13
13
13
Min.
37
440
–1.2
–3.0
—
—
61
150
–3.0
—
—
56
60
—
–9.0
3.5
Typ.
47
490
0
–1.0
0.1
0.15
69
190
–0.5
0.1
0.2
64
70
–38
–6.0
6.0
Max.
57
540
1.0
1.0
0.5
0.5
—
230
1.0
1.0
2.0
—
—
–27
–3.0
8.5
Unit
mA
mVrms
dB
dB
%
%
dB
mVrms
dB
%
%
dB
dB
dB
dB
dB
Input signal
No signal
Mono 1kHz 100% mod.
Pre-em. ON
Mono 5kHz 30% mod.
Pre-em. ON
Mono 12kHz 30% mod.
Pre-em. ON
Mono 1kHz 100% mod.
Pre-em. ON
Mono 1kHz 200% mod.
Pre-em. ON
Mono 1kHz,
Pre-em. ON
SUB (L-R), 1kHz,
100% mod., NR OFF
SUB (L-R) 12kHz,
30% mod., NR OFF
SUB (L-R) 1kHz,
100% mod., NR OFF
SUB (L-R), 1kHz,
200% mod., NR OFF
SUB (L-R) 1kHz,
NR OFF
ST-L (R), 1kHz,
100% mod., NR ON,
SAP Carrier (5fH)
PILOT (fH) 0dB
Change
PILOT (f
H) Level
Measurement
conditions
20 log
('5k'/'1k')
20 log
('12k'/'1k')
20 log
('100%'/'0%')
20 log
('12k'/'1k')
20 log
('100%'/'0%')
20 log
('NRSW = 0'/
'NRSW = 1')
0dB = 49mVrms
0dB = 49mVrms
20 log (‘on
level'/'off level')
Filter
15kLPF
15kLPF
15kLPF
15kLPF
15kLPF
15kLPF
1kBPF
f
H BPF
Output
pin
19
38/39
38/39
38/39
38/39
38/39
38/39
21
21
21
21
21
39
21
BUS
RETURN
Page 13
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CXA2134Q
No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Item
SAP output level
SAP LPF frequency
response
SAP distortion
SAP S/N
Cross talk
SAP → Stereo
SAP ON level
SAP ON/OFF hysteresis
ST separation 1 L → R
ST separation 1 R → L
ST separation 2 L → R
ST separation 2 R → L
TVOUT output level
TVOUT
mute amount
LSOUT output level
LSOUT cross talk
EXT → INT
LSOUT cross talk
INT → EXT
Symbol
Vsap
FCsap
THDsap
SNsap
CTsap
THsap
HYsap
STLsep1
STRsep1
STLsep2
STRsep2
Vtv
MUtv1
MUtv2
Vls
CTls
Mode
SAP
SAP
SAP
SAP
ST
SAP
ST
ST
ST
ST
EXT
INT
EXT
INT
EXT
INT
EXT
Input pin
13
13
13
13
13
13
13
13
13
13
33/34
36/371333/34
36/371333/34
36/37
33/34
36/37
13
Min.
130
–3.0
—
46
60
–12.0
2.0
23
23
23
23
440
—
—
440
440
—
—
Typ.
160
0
2.5
55
70
–9.0
4.0
35
35
35
35
490
–95
–95
490
490
–75
–90
Max.
190
2.5
6.0
—
—
–6.5
6.0
—
—
—
—
540
–80
–80
540
540
–60
–80
Unit
mVrms
dB
%
dB
dB
dB
dB
dB
dB
dB
dB
mVrms
dB
dB
mVrms
mVrms
dB
dB
Input signal
SAP 1kHz 100% mod.
NR OFF
SAP 10kHz, 30% mod
.
NR OFF
SAP 1kHz 100% mod
.
NR OFF
SAP 1kHz, NR OFF
SAP 1kHz 100% mod.
NR ON, Pilot (fH)
Change
SAP Carrier (5f
H)
Level
ST-L 300Hz 30% mod
.
NR ON
ST-R 300Hz 30% mod
.
NR ON
ST-L 3kHz 30% mod
.
NR ON
ST-R 3kHz 30% mod
.
NR ON
Sine wave 1kHz,
490mVrms
Mono 1kHz 100% mod.
Pre-em. ON
Sine wave 1kHz,
490mVrms
Mono 1kHz 100% mod.
Pre-em. ON
Sine wave 1kHz,
490mVrms
Sine wave 1kHz,
490mVrms
Mono 1kHz 100% mod.
Pre-em. ON
Measurement
conditions
20 log
('10k'/'1k')
20 log
('100%'/'0%')
20 log ('NRSW
= 1'/'NRSW = 0')
0dB = 147mVrms
20 log (‘on
level’/’off level’)
20 log
('Lch'/'Rch')
20 log
('Rch'/'Lch')
20 log
('Lch'/'Rch')
20 log
('Rch'/'Lch')
20 log
(M1 =
"0"/M1 = "1")
20 log
(M1 =
"0"/M1 = "1")
Filter
15kLPF
15kLPF
1kBPF
15kLPF
15kLPF
15kLPF
15kLPF
1kBPF
1kBPF
1kBPF
Output
pin
24
24
24
24
39
BUS
RETURN
38/39
38/39
38/39
38/39
38/39
38/39
3/4
3/4
3/4
Page 14
– 14 –
CXA2134Q
No.
35
36
37
38
39
40
41
42
43
44
45
46
Item
LSOUT mute amount
LSOUT DC offset
LSOUT distortion
LSOUT S/N
LSOUT overload distortion
Bass maximum value
Bass minimum value
Treble maximum value
Treble minimum value
Volume minimum value
SURROUND
frequency response 1
SURROUND
frequency response 2
Symbol
MUls
OSls
THDls
SNls
THDlsmax
TBmax
TBmin
TTmax
TTmin
VOLmin
Sr1Sr2
Mode
EXT
INT
EXT
EXT
EXT
EXT
EXT
EXT
EXT
EXT
EXT
EXT
EXT
Input pin
33/34
36/37
—
33/34
36/37
33/34
36/37
33/34
36/37
33/34
36/37
33/34
36/37
33/34
36/37
33/34
36/37
33/34
36/37
34/37
34/37
Min.
—
–25
—
67
—
9
–13
9
–13
—
1.5
4.5
Typ.
–90
0
0.01
77
0.03
11
–11
11
–11
–90
3.0
6.0
Max.
–80
25
0.5
—
0.5
13
–9
13
–9
–80
4.8
7.5
Unit
dB
mV
%
dB
%
dB
dB
dB
dB
dB
dB
dB
Input signal
Sine wave 1kHz,
490mVrms
No signal
Sine wave 1kHz,
490mVrms
Sine wave 1kHz,
490mVrms
Sine wave 1kHz,
2Vrms
Sine wave 100Hz,
490mVrms
Sine wave 100Hz,
490mVrms
Sine wave 10kHz,
490mVrms
Sine wave 10kHz,
490mVrms
Sine wave 1kHz,
490mVrms
Sine wave 330Hz,
490mVrms
Sine wave 10kHz,
490mVrms
Measurement
conditions
20 log (M2 =
"0"/M2 = "1")
Mute (M2 = "0")/
DC difference
when there is
no signal
BASS = "3F"
BASS = "0"
TREBLE = "3F"
TREBLE = "0"
VOL-L = "0",
VOL-R = "0"
Filter
1kBPF
15kLPF
15kLPF
15kLPF
1kBPF
Output
pin
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
4
4
Page 15
– 15 –
CXA2134Q
Electrical Characteristics Measurement Circuit
MEASURESFILTER
15kHz LPF f
H BPF
1kHz BPF
I
2
C BUS DATA
S6 S5 S4 S3 S2 S1
BUF
R6
3.3k
R7
3k
C16
2700p
C17
0.047µ
25
2627
28
29
30
36
35
34
31
32
33
AUX2-R
NC
AUX1-L
AUX1-R
VCAWGT
VCATC
VCAIN
VEOUT
VETC
VEWGT
VE
SAPIN
2
3
4
5
6
7
8
9
10
11
12
1
TOUT-L
BASS-L
LSOUT-R
SDA
SCL
DGND
PLINT
PCINT1
MAINOUT
MAININ
LSOUT-L
PCINT2
13
14
15
16
17
18
19
20
21
22
23
24
COMPIN
VGR
NC
GND
SAPTC
NC
STIN
NOISETC
IREF
V
CC
SAPOUT
SUBOUT
40
39
38
37
41
42
43
44
45
46
47
48
VOLIN-L
TRE-L
NC
BASS-R
SURRTC
TOUT-R
NC
TRE-R
TVOUT-L
TVOUT-R
AUX2-L
VOLIN-R
C18
3.3µ TANTALUM
C19
4.7µ
C20 10µ
TANTALUM
R8
3.9k C21
1µ
C24
4.7µ
SIGNAL GENE­RATOR
V2
AC
V1 AC
C28
0.022µ
C26
4.7µ C27
4.7µ
C1
4.7µ
C5
4.7µ
R1
220R2220
R3
1MEG
C6
5600P
R4
100kC70.012µ
DGND
C13
4.7µ
C9
4.7µ
GND
V6 AC
SIGNAL GENERATOR
GND
GND
C10
10µ
R5 62k ± 1% METAL
C11
4.7µ
C12
100µ
V5 9V
V
CC
C14
4.7µ
C15
4.7µ
C8 1µ
C2
0.1µC34.7µC44.7µ
C29
4700p
C30
4.7µ
C32
4700p
C31
0.1µ
C25
4.7µ
SIGNAL GENE­RATOR
C23
4.7µ
V3 AC
SIGNAL GENE­RATOR
C22
4.7µ
V4 AC
SIGNAL GENE­RATOR
Page 16
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CXA2134Q
Adjustment Method
The resister data is set to the standard value.
1.ATT adjustment
1) Input a 100Hz, 245mVrms sine wave signal to COMPIN and monitor the TVOUT-L output level. Then, adjust the “ATT” data for ATT adjustment so that the TVOUT-L output goes to the standard value (490mVrms).
2) Adjustment range: ±20% Adjustment bits: 4 bits
2.Separation adjustment
1) Input ST-L signal (modulation factor 30%, frequency 300Hz NR-ON) to COMPIN. At this time, adjust the “WIDEBAND” adjustment data to reduce TVOUT-R output to the minimum.
2) Next, set the frequency only of the input signal to 3kHz and adjust the “SPECTRAL” adjustment data to reduce TVOUT-R output to the minimum.
3) The adjustments in 1 and 2 above are performed to optimize the separation.
4) “WIDEBAND” “SPECTRAL” Adjustment range: ±30% Adjustment range: ±15% Adjustment bits: 6 bits Adjustment bits: 6 bits
Note) Adjust this IC through tuner and IF when this IC is mounted on the set.
Page 17
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CXA2134Q
Slave receiver
84H (1000 0100)
Slave transmitter 85H (1000 0101)
Register Specifications
Slave address
Register table
Status registers
STA1
BIT7
POWER
ON RESET
STA2
BIT6
STEREO
STA3
BIT5
SAP
STA4
BIT4
NOISE
STA5
BIT3
—
STA6
BIT2
—
STA7
BIT1
—
STA8
BIT0
—
Note) The microcomputer reads both SAP and NOISE status and judges SAP discrimination.
SPECTRAL WIDEBAND
BASS
TREBLE
VOL-L VOL-R
∗∗∗∗0000 ∗∗∗∗0001 ∗∗∗∗0010 ∗∗∗∗0011 ∗∗∗∗0100 ∗∗∗∗0101 ∗∗∗∗0110 ∗∗∗∗0111 ∗∗∗∗1000
Data
Sub address
MSB LSB
BIT7
∗
BIT6
M2
∗ ∗ ∗
∗ ∗ ∗ ∗
BIT5 BIT4 BIT3 BIT2
BIT1
BIT0
TEST-DA
EXT1
TEST1
EXT2
SURR
NRSW
ATTSW
FOMO
∗
SAPC
FEXT1
M1
FEXT2
ATT
∗
∗: Don't care
Page 18
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CXA2134Q
PONRES STEREO SAP NOISE
1 1 1 1
POWER ON RESET detection; 1: RESET Stereo discrimination of the COMPIN input signal; 1: Stereo SAP discrimination of the COMPIN input signal; 1: SAP Noise level discrimination of the SAP input signal; 1: Noise
Register Number of bits Contents
Description of Registers Control registers
∗1
Classification U: User control
A: Adjustment S: Proper to set T: Test
Status registers
ATT SPECTRAL WIDEBAND TEST-DA TEST1 VOL-L VOL-R BASS TREBLE SURR NRSW
FOMO EXT1 EXT2 FEXT1
FEXT2 M1 M2 ATTSW
SAPC
4 6 6 1 1 6 6 6 6 1 1
1 1 1 1
1 1 1 1
1
A A A T T U U U U U U
U U U U
U U U S
S
Input level adjustment Adjustment of stereo separation (3kHz) Adjustment of stereo separation (300Hz) DAC test mode Test mode Left channel volume control Right channel volume control Bass control Treble control Quasi-surround function ON/OFF Selection of the output signal (Stereo mode, SAP mode) Forced MONO.
(Left channel only is MONO during SAP output.) Selection of TV mode or external input mode Selection of external input 1 mode or external input 2
mode (EXT1 = 1) External input 1 forced MONO External input 2 forced MONO Selection of TVOUT mute function ON/OFF Selection of LSOUT mute function ON/OFF Main VCA ON/OFF Selection of SAP mode or L + R mode according to the
presence of SAP broadcasting
9 1F 1F
0
0 3F 3F 1F 1F
0
0
0
0
0
0
0
1
1
0
0
Register
Number of bits
Classification
∗1
Contents
Standard setting
Page 19
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CXA2134Q
Description of Control Registers
ATT (4): Perform input level adjustment.
0 = Level Min. F = Level Max.
SPECTRAL (6): Perform high frequency (fs = 3kHz) separation adjustment.
0 = Level Max. 3F = Level Min.
WIDEBAND (6):Perform low frequency (fs = 300Hz) separation adjustment.
0 = Level Min. 3F = Level Max.
TEST-DA (1):Set DAC output test mode.
0 = Normal mode 1 = DAC output test mode In addition, the following outputs are present at Pin 39. TVOUT-L (Pin 39): DA control DC level
TEST1 (1): Monitor SAPBPF and NRBPF outputs.
0 = Normal mode 1 = SAPBPF, NRBPF outputs In addition, the following outputs are present at Pins 39 and 38. TVOUT-L (Pin 39): SAP BPF OUT TVOUT-R (Pin 38): NR BPF OUT
VOL-L (6): LSOUT-L output signal level control
0 = Volume Min. 3F= Volume Max.
–1.25 dB/STEP
VOL-R (6): LSOUT-R output signal level control
0 = Volume Min. 3F= Volume Max.
–1.25 dB/STEP
BASS (6): LSOUT output bass control
0 = Bass Min. 1F = Bass Center 3F = Bass Max.
TREBLE (6): LSOUT output treble control
0 = Treble Min. 1F = Treble Center 3F = Treble Max.
Page 20
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CXA2134Q
SURR (1): Surround function selection
0 = Surround OFF 1 = Surround ON
NRSW (1): Select stereo mode or SAP mode
0 = Stereo mode 1 = SAP mode
FOMO (1): Select forced MONO mode
0 = Normal mode 1 = Forced MONO mode
EXT1 (1): Select TV mode or external input mode for TVOUT output.
0 = TV mode 1 = External input mode
EXT2 (1): Select external input [1] mode or external input [2] mode for TVOUT output. (EXT1 = 1)
0 = External input [1] mode 1 = External input [2] mode
FEXT1 (1): Turn external input [1] to forced MONO.
0 = Normal mode 1 = External input [1] is forced MONO.
Input the same signal to both AUX1-L and AUX1-R.
FEXT2 (1): Turn external input [2] to forced MONO
0 = Normal mode 1 = External input [2] is forced MONO Input the same signal to both AUX2-L and AUX2-R.
M1 (1): Mute the TVOUT-L and TVOUT-R output.
0 = Mute ON 1 = Mute OFF
M2 (1): Mute the LSOUT-L and LSOUT-R output.
0 = Mute ON 1 = Mute OFF
ATTSW (1) Select BYPASS SW of MVCA
0 = Normal mode 1 = MVCA is passed
SAPC (1): Select the SAP signal output mode
When there is no SAP signal, the conditions for selecting SAP output are selected by SAPC. 0 = L + R output is selected 1 = SAP output is selected
Page 21
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CXA2134Q
Description of Mode Control
NRSW
FOMO
SAPC
“Select dbx input and TV decoder output” Conditions: FOMO = 0
NRSW = 0 (MONO or ST output)
• During ST input: left channel: L, right channel: R
• During other input: left channel: L + R, right channel: L + R
NRSW = 1 (SAP output)
• When there is “SAP” during SAP
discrimination – left channel: SAP, right channel: SAP
• When there is “No SAP”, output is the
same as when NRSW = 0.
“Select dbx input and TV decoder output” Conditions: FOMO = 0
NRSW = 0 (MONO or ST output) As on the left
NRSW = 1 (SAP output)
• Regardless of the presence of SAP discrimination, dbx input: “SAP” left channel: SAP, right channel: SAP
However, when there is no SAP, SAPOUT output is soft muted (–7dB)
SAPC = 0 SAPC = 1
“Forced MONO”
FOMO = 1
• During SAP output: left channel: L + R, right channel: SAP
• During ST or MONO output: left channel: L + R, right channel: L + R Change the selection conditions for “MONO or ST output” and “SAP output”.
SAPC = 0: Switch to SAP output when there is SAP discrimination.
Do not switch to SAP output when there is no SAP discrimination.
SAPC = 1: Switch to SAP output regardless of whether there is SAP discrimination.
Page 22
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CXA2134Q
Decoder Output and Mode Control Table 1 (SAPC = 1)
Note
(SAP) : The SAPOUT output signal is soft muted (approximately –7dB).
The signal is soft muted when NOISE = 1.
∗ : Don’t care. ∗1
SAP or NOISE discrimination may be made during MONO or STEREO input when the noise is input in the weak electric field. Then microcomputer reads "NOISE" status from IC and decides whether SAP is output. "NOISE" status rises earlier than "SAP" status when the amount of noise is increased to COMPIN.
0 0 0 0 ∗ 1 MUTE L + R L + R 0 0 0 1 0 1 SAP SAP SAP
MONO
0 0 0 1 1 1 SAP L + R SAP 0 ∗ 1 0 ∗ 1 MUTE L + R L + R 0 ∗ 1 1 0 1 (SAP) (SAP) (SAP) 0 ∗ 1 1 1 1 (SAP) L + R (SAP) 1 0 ∗ 0 0 1 L – R L R 1 0 ∗ 0 1 1 MUTE L + R L + R 1 1 1 0 0 1 L – R L R
STEREO
1 1 1 0 1 1 MUTE L + R L + R 1 0 0 1 0 1 SAP SAP SAP 1 0 0 1 1 1 SAP L + R SAP 1 ∗ 1 1 0 1 (SAP) (SAP) (SAP) 1 ∗ 1 1 1 1 (SAP) L + R (SAP) 0 1 ∗ 0 0 1 MUTE L + R L + R 0 1 ∗ 0 1 1 MUTE L + R L + R
MONO & SAP
0 1 0 1 0 1 SAP SAP SAP 0 1 0 1 1 1 SAP L + R SAP 0 1 1 1 0 1 (SAP) (SAP) (SAP) 0 1 1 1 1 1 (SAP) L + R (SAP) 1 1 ∗ 0 0 1 L – R L R 1 1 ∗ 0 1 1 MUTE L + R L + R
STEREO & SAP
1 1 0 1 0 1 SAP SAP SAP 1 1 0 1 1 1 SAP L + R SAP 1 1 1 1 0 1 (SAP) (SAP) (SAP) 1 1 1 1 1 1 (SAP) L + R (SAP)
Input signal mode
Mode detection
Mode control
dbx
input
Output
ST SAP NOISE NRSW FOMO SAPC Lch Rch
∗1
∗1
Page 23
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CXA2134Q
Decoder Output and Mode Control Table 2 (SAPC = 0)
Note
(SAP) : The SAPOUT output signal is soft muted (approximately –7dB).
The signal is soft muted when NOISE = 1.
∗ : Don’t care. ∗1
SAP or NOISE discrimination may be made during MONO or STEREO input when the noise is input in the weak electric field. Then microcomputer reads "NOISE" status from IC and decides whether SAP is output. "NOISE" status rises earlier than "SAP" status when the amount of noise is increased to COMPIN.
0 0 ∗ ∗ ∗ 0 MUTE L + R L + R 0 1 1 0 0 0 MUTE L + R L + R
MONO 0 1 1 0 1 0 MUTE L + R L + R
0 1 1 1 0 0 (SAP) (SAP) (SAP) 0 1 1 1 1 0 (SAP) L + R (SAP) 1 0 ∗ 0 0 0 L – R L R 1 0 ∗ 0 1 0 MUTE L + R L + R 1 0 ∗ 1 0 0 L – R L R
STEREO
1 0 ∗ 1 1 0 MUTE L + R L + R 1 1 1 0 0 0 L – R L R 1 1 1 0 1 0 MUTE L + R L + R 1 1 1 1 0 0 (SAP) (SAP) (SAP) 1 1 1 1 1 0 (SAP) L + R (SAP) 0 1 0 0 0 0 MUTE L + R L + R 0 1 0 0 1 0 MUTE L + R L + R 0 1 0 1 0 0 SAP SAP SAP
MONO & SAP
0 1 0 1 1 0 SAP L + R SAP 0 1 1 0 0 0 MUTE L + R L + R 0 1 1 0 1 0 MUTE L + R L + R 0 1 1 1 0 0 (SAP) (SAP) (SAP) 0 1 1 1 1 0 (SAP) L + R (SAP) 1 1 0 0 0 0 L – R L R 1 1 0 0 1 0 MUTE L + R L + R 1 1 0 1 0 0 SAP SAP SAP
STEREO & SAP
1 1 0 1 1 0 SAP L + R SAP 1 1 1 0 0 0 L – R L R 1 1 1 0 1 0 MUTE L + R L + R 1 1 1 1 0 0 (SAP) (SAP) (SAP) 1 1 1 1 1 0 (SAP) L + R (SAP)
Input signal mode
Mode detection
Mode control
dbx
input
Output
ST SAP NOISE NRSW FOMO SAPC Lch Rch
∗1
∗1
Page 24
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CXA2134Q
Mode Control Table 3
TV (L) / TV (R) are selected in MATRIX
TV (L): MONO, ST-L, SAP TV (R): MONO, ST-R, SAP
EXT1
– 0 1 1 1 1
FEXT2
– – – – 0 1
FEXT1
– – 0 1 – –
EXT2
– – 0 0 1 1
M1
0 1 1 1 1 1
1 2 3 4 5 6
TVOUT-L
MUTE
TV (L) AUX1-L AUX1-L AUX2-L AUX2-L
TVOUT-R
MUTE TV (R)
AUX1-R
AUX1-L
AUX2-R
AUX2-L
Page 25
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CXA2134Q
Description of Operation
The US audio multiplexing system possesses the base-band spectrum shown in Fig. 1.
Fig. 1. Base-band spectrum
Fig. 2. Overall block diagram (See Fig. 3 for the dbx-TV block)
Fig 3. dbx-TV block
PEAK DEV
kHz
50
25
25
L + R
50 – 15kHz
L-R
dbx-TV
NR
50
AM-DSB-SC
SAP
dbx-TV NR
FM 10kHz
50 – 10kHz
TELEMETRY
FM 3kHz
15
f
H = 15.734kHz
f
H 2fH 3fH 4fH 5fH 6fH 6.5fH
f
5
PILOT
3
(COMPIN)
STEREO LPF
PLL
(VCO 8f
H)
2f
HL0°
f
HL90°
f
HL0°
MODE CONTROL
PILOT
DET
MVCA
PILOT
CANCEL
MAIN LPF DE.EM
(MAIN OUT)
L + R
4.7µ
(MAIN IN)
L-R (DSB)
DET
INJ.
LOCK
SUBVCA
SUB LPF
WIDEBAND
(SUBOUT)
(ST IN)
4.7µ NR SW
dbx-TV
BLOCK
MATRIX
(Lch)
(Rch)
MODE
CONTROL
(SAP IN)
4.7µ
SAP(FM)
DET
SAP LPF
MODE CONTROL
SAP BPF
(SAP OUT)
L – R
to TVSW
NOISE
DET
I2C BUS DECODER
SAP DET
A B
I2C BUS DECODER
I
2
C BUS
DECODER
13
9
8
21
22
24
25
NR SW
FIXED
DEEMPHASIS
VARIABLE
DEEMPHASIS
(VE OUT) (VCA IN)
to MATRIX
4.7µ
HPF
LPF
LPF
RMS DET
RMS
DET
VCA
A B
(ST IN)
(SAP IN)
22
25
29
30
Page 26
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CXA2134Q
Fig. 4. Sound processor block
(1) L + R (MAIN)
After the audio multiplexing signal input from COMPIN (Pin 13) passes through MVCA, the SAP signal and telemetry signal are suppressed by STEREO LPF. Next, the pilot signals are canceled. Finally, the L – R signal and SAP signal are removed by MAIN LPF, and the frequency response is flattened (de­emphasized) and input to the matrix.
(2) L – R (SUB)
The L – R signal follows the same course as L + R before the pilot signal is canceled. L – R has no carrier signal, as it is a suppressed-carrier double-sideband amplitude modulated signal (DSB-AM modulated). For this reason, the pilot signal is used to regenerate the carrier signal (quasi-sine wave) to be used for the demodulation of the L – R signal. In the last stage, the residual high frequency components are removed by SUB LPF and the L – R signal is input to the dbx-TV block via the NRSW circuit after passing through SUBVCA.
(3) SAP
SAP is an FM signal using 5fH as a carrier as shown in the Fig. 1. First, the SAP signal only is extracted using SAP BPF. Then, this is subjected to FM detection. Finally, residual high frequency components are removed and frequency response flattened using SAP LPF, and the SAP signal is input to the dbx-TV block via the NRSW circuit. When there is no SAP signal, the Pin 24 output is soft muted.
(4) Mode discrimination
Stereo discrimination is performed by detecting the pilot signal amplitude. SAP discrimination is performed by detecting the 5fH carrier amplitude. NOISE discrimination is performed by detecting the noise near 25kHz after FM detection of SAP signal.
(Lch) (Rch)
(AUX1-L)
(AUX1-R)
from MATRIX
SURROUND
BASS
TREBLE
(LSOUT-L)
(LSOUT-R)
(TVOUT-L) (TVOUT-R)
TVSW
(AUX2-L) (AUX2-R)
VOL-L
VOL-R
33
34
37
36
39
38
1
44
48
43
3
4
(VOLIN-L)
(VOLIN-R)
(TOUT-L)
(TOUT-R)
4.7µ
4.7µ
Page 27
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CXA2134Q
(5) dbx-TV block
Either the L – R signal or SAP signal input respectively from ST IN (Pin 22) or SAP IN (Pin 25) is selected by the mode control and input to the dbx-TV block. The input signal then passes through the fixed de-emphasis circuit and is applied to the variable de­emphasis circuit. The signal output from the variable de-emphasis circuit passes through an external capacitor and is applied to VCA (voltage control amplifier). Finally, the VCA output is converted from a current to a voltage using an operational amplifier and then input to the matrix. The variable de-emphasis circuit transmittance and VCA gain are respectively controlled by Each of effective value detection circuits. Each of the effective value detection circuits passes the input signal through a predetermined filter for weighting before the effective value of the weighted signal is detected to provide the control signal.
(6) Matrix, TVSW
The signals (L + R, L – R, SAP) input to “MATRIX” become the outputs for the ST-L, ST-R, MONO and SAP signals according to the BUS data and whether there is ST / SAP discrimination. “TVSW” switches the “MATRIX” output signal, external input signal (input to AUX1-L, R), external input signal (input to AUX2-L, R) and external forced MONO.
(7) Sound processor block
The sound processor block contains "SURROUND" (quasi-surround function), “BASS/TREBLE” tone control functions, and “VOLUME”.
• Surround At "SURROUND", the L and R differential components are phase-shifted and these components are added to the left and right channels. When surround is OFF (SURR = 0) Inputs are output as is.
Lout = Lin Rout = Rin
When surround is ON (SURR = 1)
Lout = Lin – (Lin – Rin)
Rout = Rin + (Lin – Rin)
R = 24kΩ (On-chip) C = 0.022µF (Externally attached to Pin 40)
(Lin, Lout) and Rin, (Rout) indicate the left- and right- channel I/O of the surround circuit.
(8) Others
“MVCA” is a VCA which adjusts the input signal level to the standard level of this IC. “Bias” supplies the reference voltage and reference current to the other blocks. The current flowing to the resistor connecting IREF (Pin 15) with GND become the reference current.
1 – jωRC 1 + jωRC
1 – jωRC 1 + jωRC
{
{
{
Page 28
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CXA2134Q
Application Circuit
3.3k3k
2700p
0.047µ
4.7µ
3.9k
1µ
4.7µ
0.022µ
4.7µ
4.7µ
4.7µ
4.7µ
220 220
1MEG
5600P
100k 0.012µ
DGND
4.7µ
4.7µ
+9V
GND
10µ
62k ± 1% METAL
4.7µ
100µ
4.7µ
4.7µ
1µ
0.1µ 4.7µ 4.7µ
4700p
4.7µ
4700p
0.1µ
4.7µ 4.7µ4.7µ
AUX1 input
25
262728
29
30
36
35
34
31
32
33
AUX2-R
NC
AUX1-L
AUX1-R
VCAWGT
VCATC
VCAIN
VEOUT
VETC
VEWGT
VE
SAPIN
2
3
4
5
6
7
8
9
10
11
12
1
TOUT-L
BASS-L
LSOUT-R
SDA
SCL
DGND
PLINT
PCINT1
MAINOUT
MAININ
LSOUT-L
PCINT2
13
14
15
16
17
18
19
20
21
22
23
24
COMPIN
VGR
NC
GND
SAPTC
NC
STIN
NOISETC
IREF
V
CC
SAPOUT
SUBOUT
40
39
38
37
41
42
43
44
45
46
47
48
VOLIN-L
TRE-L
NC
BASS-R
SURRTC
TOUT-R
NC
TRE-R
TVOUT-L
TVOUT-R
AUX2-L
VOLIN-R
AUX2 input
TVOUT output
LS output µ-com
Composite baseband signal input
10µ TANTALUM
3.3µ
TANTALUM
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
Page 29
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CXA2134Q
I2C Bus Block Items (SDA, SCL)
I2C bus load conditions: Pull-up resistor 4kΩ (Connect to +5V)
Load capacitor 200pF (Connect to GND)
I2C Bus Control Signal
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18
High level input voltage Low level input voltage High level input current Low level input current Low level output voltage SDA (Pin 5) during 3mA inflow Maximum inflow current Input capacitance Maximum clock frequency Minimum waiting time for data change Minimum waiting time for start of data transfer Low level clock pulse width High level clock pulse width Minimum waiting time for start preparation Minimum data hold time Minimum data preparation time Rise time Fall time Minimum waiting time for stop preparation
VIH VIL IIH IIL VOL IOL CI fSCL tBUF tHD: STA tLOW tHIGH tSU: STA tHD: DAT tSU: DAT tR tF tSU: STO
3.0 0
— —
0 3
—
0
4.7
4.0
4.7
4.0
4.7 0
250
— —
4.7
— — — — — — — — — — — — — — — — — —
5.0
1.5 10 10
0.4 — 10
100
— — — — — — —
1
300
—
V
µA
V
mA
pF
kHz
µs
ns µs ns µs
SDA
SCL
tBUF
P
S
t
HD: STA
t
LOW
tHD: DAT
t
HIGH
tR
tF
tHD: STA
t
SU: STA
Sr
t
SU: STO
P
t
SU: DAT
No. Item Symbol Min. Typ. Max. Unit
Page 30
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CXA2134Q
I2C Bus Signal
There are two I2C bus signals, SDA (Serial DATA) and SCL (Serial CLOCK) signals. SDA is a bidirectional signal.
• Accordingly there are 3 values outputs, H, L and Hi-Z.
• I2C transfer begins with Start Condition and ends with Stop Condition.
SDA
SCL
Start Condition S Stop Condition P
H L Hi-Z L
Page 31
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CXA2134Q
• I2C data Write (Write from I2C controller to the IC)
∗
Data can be transferred in 8-bit units to be set as required. Sub address is incremented automatically.
• I2C data Read (Read from the IC to I2C controller)
• Read timing
∗
Data Read is performed during SCL rise.
S
Address
1 6 7 8 9 1 8 9
SCL
ACK DATA ACK
SDA
High during Read
Hi-Z
7
P
DATA
1 2 3 4 5 6 7 89 9
IC output SDA
SCL
MSB
LSB
ACK ACK
Read timing
ACKACKDATA DATA
P
8 9 1 8 9
Hi-Z Hi-Z
DATA (n) DATA (n + 1)ACK
1 8
9
1 8 9
ACK DATA (n + 2)
Hi-Z Hi-Z
LSBMSB
S
Address
1 2 3 4 5 6 7 8 9 1 8 9
SDA
SCL
MSB
Low during Write
MSB LSB
Hi-Z Hi-Z
ACK Sub Address ACK
Page 32
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CXA2134Q
Input level vs. Distortion characteristics 1 (MONO)
1.0
0.1
–10 0 10
Input level vs. Distortion characteristics 2 (Stereo)
THD – Distortion [%]
10
1.0
–10 0 10
Input level [dB]
Input signal: Stereo L = –R (dbx-TVNR ON), 1kHz 0dB = 100% modulation level V
CC = 9V, 30kHz using LPF, ST mode
Measurement point: TVOUT-L/R
Input level vs. Distortion characteristics 3 (SAP)
10
1.0
–10 0 10
Input level [dB]
Input level [dB]
Standard level (100%)
Standard level (100%)
Input signal: SAP (dbx-TVNR ON) 1kHz, 0dB = 100% modulation level V
CC = 9V, 30kHz using LPF, SAP mode
Measurement point: TVOUT-L/R
Standard level (100%)
Input signal: MONO (Pre-emphasis on), 1kHz 0dB = 100% modulation level V
CC = 9V, 30kHz using LPF
Measurement point: TVOUT-L/R
THD – Distortion [%]
THD – Distortion [%]
Page 33
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CXA2134Q
Frequency [kHz]
Gain [dB]
Stereo LPF frequency response
10
5
0
–5
–10
0 20 40 60 80 100
30
10
0
–20
–50
1 2 5 10 20 507 70 100
–40
–30
–10
20
Gain (FC main and FC sub) [dB]
10
0
–20
20 40 60 80 100 120
–10
20
SAP frequency response and group delay
Group delay [µs]
100
90 80 70 60 50 40
10
20
0
30
5fH
Gain
Group delay
3.8fH
6.2fH
Frequency [kHz]
Frequency [kHz]
Main LPF and Sub LPF frequency response
Gain [dB]
Page 34
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CXA2134Q
0 F 1F
Control data VOL-L, VOL-R
2F 3F
Input: AUX1, 2
1kHz, 490mVrms
Output: LSOUT
0
–20
–40
–60
–80
–100
LSOUT output level [dB]
Volume characteristics
Page 35
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CXA2134Q
Package Outline Unit: mm
SONY CODE EIAJ CODE JEDEC CODE
M
PACKAGE STRUCTURE
PACKAGE MATERIAL LEAD TREATMENT LEAD MATERIAL
PACKAGE MASS
EPOXY RESIN
SOLDER / PALLADIUM PLATING
42/COPPER ALLOY
48PIN QFP (PLASTIC)
15.3 ± 0.4
12.0 – 0.1
+ 0.4
0.8
0.3 – 0.1
+ 0.15
0.24
13
24
2536
37
48
1 12
2.2 – 0.15
+ 0.35
0.9 ± 0.2
0.1 – 0.1
+ 0.2
13.5
0.15 – 0.05
+ 0.1
QFP-48P-L04 QFP048-P-1212
0.7g
0.15
NOTE : PALLADIUM PLATING
This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame).
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