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Sony Semiconductor Electronic Components Datasheet

CXA2161R Datasheet

I2C Bus Compatible Audio Video (AV) Switch & Electronic Volume Control

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CXA2161R pdf
CXA2161R
I2C Bus Compatible Audio Video (AV) Switch & Electronic Volume Control
Description
The Sony CXA2161R is an Audio/Video switch
designed primarily for application in Digital Set Top
Boxes. It provides video and audio routing from the
digital encoder source to the TV and VCR scart (peri-
television) connectors. In addition, the TV audio
output has a programmable volume control. The chip
is programmed by means of an I2C interface and can
operate from a single or dual power supply.
Target specifications: Canal+, BSkyB, TPS, NorDig,
and ECCA Euro-Box
Features
Supply
Single: 0V, +5V, +12V
Dual: 0V, –5V, +5V and +12V
(Low number of external parts required)
Video
2 scart switching (VCR, TV)
VCR input supports RGB mode
Integrated 75drivers for direct video connection
Y/C mixer with trap for RF modulators
Switchable clamps on inputs
Adjustable gain on RGB outputs
Video output shutdown for low power modes
Fast blanking switch
Slow blanking switch for TV and VCR output
SVHS switch on VCR output
Y/C auxiliary input
Audio
Four stereo audio inputs
Volume control (–56dB to +6dB in 2dB steps)
Additional switchable gain on audio DAC inputs
Audio overlay facility
Volume bypass for TV and Phono outputs
Mono switching on TV, VCR outputs
High drive capability (600loads possible)
Switchable audio limiter function
Switchable Mono output for RF modulators
Audio output disable
56 pin LQFP (Plastic)
I2C and Logic
Fast mode compatible I2C bus
Function monitor with loop through
Interrupt output for function monitor
Logic output pin
Sync detector for Y/CVBS inputs
Applications
Digital Set Top Box
Integrated digital television
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
unless stated
Supply voltage
VCC 14
V
Storage temperature Tstg –65 to +150 °C
Allowable power dissipation
PD 1.1 W
(when mounted on the board)
Operating Conditions
Single supply
Dual supply
Operating temperature
Topr
12 ± 0.6
5 ± 0.25
–5 ± 0.25
5 ± 0.25
12 ± 0.6
–20 to +75
V
V
V
V
V
°C
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–
E00202-PS


Sony Semiconductor Electronic Components Datasheet

CXA2161R Datasheet

I2C Bus Compatible Audio Video (AV) Switch & Electronic Volume Control

No Preview Available !

CXA2161R pdf
Block Diagram
(1) Video and Digital Section
Typical Connection
DIG
VCR
FBLK_IN1 10
FBLK_IN2 12
+3.5V
0V
DIG BLUE
VCR BLUE
VIN_1 50
VIN_2 7
DC Restore
DC Restore
DIG GREEN/CVBS
VCR GREEN
VIN_3 51
VIN_4 6
DC Restore/Tip
DC Restore
DIG RED/CHROMA
DIG CHROMA
VCR RED/CHROMA
AUX CHROMA
VIN_5 52
VIN_6 53
VIN_7 5
VIN_13 1
DIG CVBS/LUMA
DIG CVBS/LUMA
VCR CVBS/LUMA
TV CVBS
AUX Y/CVBS
VIN_8 54
VIN_9 55
VIN_10 4
VIN_11 3
VIN_12 56
DC Restore/C bias
C bias
DC Restore/C bias
C bias
Clamp Cntl
Tip
Tip
Tip
Tip
Tip
CXA2161R
FBLK_SW
Typical Connection
9 TV_FBLK
VIDEO SWITCH1 (TV)
×2
×2
×2
Output
disable
47
VOUT_1
TV BLUE
Output
disable
Output
disable
RGB Gain Control
(+1, 2, 3dB)
46
VOUT_2
TV GREEN
45
VOUT_3
TV RED/C
TV
×2
Output
disable
43
VOUT_4
TV CVBS/Y
VCR
SYNC_ID 2
AUD_BIAS 18
VID_BIAS 49
+5V/12V_VCCA 24
–5V_GNDA 21
+5V_DIG 14
GND_DIG 8
+5V_VOUT 44
GND_VID 40
+5V_VID 48
+12V_DIG 15
Sync
Detect
MIX_SW
×2
×2
Bias
Mute
VIDEO SWITCH2 (VCR)
SDA 34
SCL 35
FNC_VCR 13
3.3V or 5V
Fast Mode
Compatible
0/6/12V
Monitor
0/6/12V
Interrupt
Control
Logic
Output
disable &
Bi-drection
Control
41
VOUT_5
VCR CHROMA
VCR
Output
disable
39
VOUT_6
VCR CVBS/Y
37 TRAP
×2
MIX_SW
38
VOUT_7
(CVBS)
RF MOD
11 FNC_TV
TV
36 INTRUPT
33 LOGIC
MICRO
Note) All video outputs contain 75drivers, except VOUT_7 (Pin 38).
–2–


Part Number CXA2161R
Description I2C Bus Compatible Audio Video (AV) Switch & Electronic Volume Control
Maker Sony Corporation
Total Page 30 Pages
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