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Sony Semiconductor Electronic Components Datasheet

CXA2149Q Datasheet

US Audio Multiplexing Decoder

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CXA2149Q
I2C-Bus-Compatible Audio/Video Switch
For the availability of this product, please contact the sales office.
Description
The CXA2149Q is a video and audio switch IC
64 pin QFP (Plastic)
featuring I2C bus compatibility for TV’s. The IC has
input pins that are compatible with the SCART
protocols. It offers other features such as an
electronic mute function with switching noise
reduction (zero cross detection), electronic volume
control, automatic SYNC pulse detection, and group
delay control.
Features
3 CVBS inputs.
2 CVBS outputs.
Group delay control on TV and CVIN1.
SYNC ID on TV and CVIN1.
3 Y/C inputs.
2 Y/C outputs.
6 L/R/2 inputs.
3 L/R/2 outputs.
Mode inputs compatible with the SCART protocol.
3 Y/C mixer circuits.
Audio muting via software control.
External muting input.
Audio switching noise elimination circuit.
Volume adjustment via software control on L/R
channel 3.
Wide band video amplifiers (20 MHz, –3 dB).
Wide audio dynamic range (3 Vrms typ)
Serial control via I2C bus.
Separate control of video and audio switches.
High impedance maintained by I2C lines (SDA,
SCL) even when power is off.
Configurable dual slave address 90/92.
I2C bus 5 and 3.3 V compatible.
Absolute Maximum Ratings
(Ta=25 °C unless stated)
Supply voltage
VCC 12 V
Storage temperature Tstg –65 to +150 °C
Allowable power dissipation
PD 900 mW
Operating Conditions
Supply voltage
Typical supply current
Operating temperature
VCC
Topr
9+/–0.5
75
–20 to +75
V
mA
°C
Applications
TV’s
Structure
Bipolar silicon monolithic IC
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.
—1—
E99946A9Y-TE


Sony Semiconductor Electronic Components Datasheet

CXA2149Q Datasheet

US Audio Multiplexing Decoder

No Preview Available !

Block Diagram
TV 64
CVIN1 62
CVIN2 60
REXT 1
RGD1 7
RGD2 6
RGD3 4
RGD4 3
I2C
Y1 58
Y2 56
Y3 54
TRAP3 53
GROUP
DELAYS
C1 52
C2 51
C3 49
DVCC 44
MODE1 18
MODE2 19
MODE3 20
MUTE 17
SDA 15
SCL 14
ADR 16
DGND 42
LO0 5
LO1 8
LTV 25
LV1 30
LV2 29
LV3 28
LV4 27
LV5 26
RTV 32
RV1 37
RV2 36
RV3 35
RV4 34
RV5 33
I 2C
LOGIC
–6dB
–6dB
CXA2149Q
—2—
SYNC
DETECT
6dB
I2C
6dB
63 TC1
61 TC2
2 TVOUT
9 CVOUT1
11 YOUT1
0dB
10 TRAP1
0dB
13 COUT1
6dB
43 CVOUT2
0dB
0dB
BIAS
BIAS
6dB
45 YOUT2
46 TRAP2
47 COUT2
59,
12
VVCC1, 2
55 VBIAS
57,
48
VGND1, 2
21 AVCC
22 ABIAS
31 AGND
39 LOUT1
6dB
6dB
6dB
0 to –63dB
0 to –63dB
38 ROUT1
41 LOUT2
40 ROUT2
6dB
23 LOUT3
6dB
24 ROUT3


Part Number CXA2149Q
Description US Audio Multiplexing Decoder
Maker Sony Corporation
Total Page 25 Pages
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