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PDF CXA2079Q Data sheet ( Hoja de datos )
| Número de pieza | CXA2079Q | |
| Descripción | S2-Compatible 6-Input 2-Output Audio/Video Switch | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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CXA2079Q
S2-Compatible 6-Input 2-Output Audio/Video Switch
Description
The CXA2079Q is a 6-input, 2-output audio/video
switch featuring I2C bus compatibility for TVs. This IC
has input pins that are compatible with S2 protocol.
64 pin QFP (Plastic)
Features
• 4 inputs that are compatible with S2 protocol
• Serial control with I2C bus
• 6 inputs, 2 outputs
• The desired inputs can be selected independently
for each of the 2 outputs
• Wide band video amplifier (20MHz, –3dB)
• Y/C MIX circuit
• Slave address can be changed (90H/92H)
• Audio muting from external pin
• High impedance maintained by I2C bus lines (SDA,
SCL) even when power is OFF
• Wide audio dynamic range (3Vrms typ.)
Applications
Audio/video switch featuring I2C bus compatibility
for TVs
Absolute Maximum Ratings
• Supply voltage
VCC
• Operating temperature Topr
• Storage temperature Tstg
• Allowable power dissipation
PD
12
–20 to +75
–65 to +150
1300
V
°C
°C
mW
Operating Conditions
Supply voltage
9 ± 0.5
V
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–
E97430A7Y
1 page  
CXA2079Q
Pin
No.
Symbol
Pin
voltage
56 YOUT1
39 YOUT2
3.3V
58 COUT1
37 COUT2
4.5V
Equivalent circuit
VCC VCC VCC
VCC
56
39
VCC VCC VCC
VCC
58
37
Description
Video signal outputs.
Output luminance signals.
Video signal outputs.
Output chrominance signals.
52 LOUT1
38 LOUT2
54 ROUT1
40 ROUT2
4.5V
VCC
52
38
54
40
VCC
56
20k
20k
Audio signal outputs.
Zo = 50Ω (within DC ± 2mA)
6 S2-1
13 S2-2
20 S2-3
27 S2-4
7 S-1
14 S-2
21 S-3
28 S-4
32 ADR
Detects the S2-compatible DC
VCC
6
VCC
VCC
superimposed onto the C signal.
4:3 video signal at 1.3V or less
4:3 letter-box signal at 1.3V or more
—
13
147
20
27 100k
to 2.5V or less
16:9 picture squeezed signal at 2.5V
or more
These pins are pulled down to GND
by a 100kΩ resistor, so the 4:3 video
signals are selected when open.
Composite video/S selector.
5V VCC VCC
The detection results are written to
the status register.
VCC 50k
7 100k
— 14
50k
21
S signal at 3.5V or less
Composite video signal at 3.5V or
more
These pins are pulled up to 5V by a
28 100kΩ resistor, so the composite
10k video signals are selected when
open.
VCC
—
147 72k
32
28k
Selects the slave address for the I2C
bus.
90H at 1.5V or less
92H at 2.5V or more
90H when open
–5–
5 Page 
CXA2079Q
– 11 –
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet CXA2079Q.PDF ] | |
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