CXA2126Q Sony, CXA2126Q Datasheet
CXA2126Q
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CXA2126Q Summary of contents
Page 1
... Audio/Video Switch with Electronic Volume for 2 Scart Description 2 The CXA2126Q programmable audio, video switch designed primarily for set top box applications. It interfaces from digital encoder sources to TV and VCR scart connectors. Features • 2 scart independent audio/video switching (TV, VCR) • Compatible with 3 scart Audio/Video switch, CXA2125Q • ...
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... MUTE AUDIO_SWITCH1 (TV) 8dB 1dB 0/6dB ZCD MONO SWITCH 8dB 1dB 0/6dB Selectable Gain Stage AUDIO_SWITCH2 (VCR) MONO SWITCH Interface LOGIC P.O.D 3. – 2 – CXA2126Q Typical Connection 100 50 TV_FBLANK 100 48 VOUT1 TV BLUE 100 47 VOUT2 TV GREEN 100 46 VOUT3 TV RED/C 100 49 VOUT4 TV CVBS/Y ...
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... VID_V 60 CC VIN2 61 VID_BIAS 62 VIN1 63 FNC_VCR – 3 – CXA2126Q FNC_TV LOGIC 27 NC AUD_GND LIN3 24 VIN11 23 RIN3 AUD_V ...
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... A 35 22k 37 33 20k – 4 – CXA2126Q Description = 9V CC Video signal inputs. An input coupling capacitor is required. (typ = 0.47µF) Audio signal inputs. An input coupling capacitor is required. (typ = 2.2µ Video signal outputs. 280 Audio signal outputs ...
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... 12V CC 120 15k 12V CC 77.7k 54 13.5k 120 A – 5 – CXA2126Q Description = 9V Reference Bias for video circuit. Connected to GND with capacitor. (typ = 47µ Reference Bias for audio circuit. Connected to GND with capacitor. (typ = 22µ controlled output giving 0V 12V. ...
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... 40k 4. 12V CC 147 72k 45 28k – 6 – CXA2126Q Description Connection to base of external regulator transistor. Max I = 1mA 120 clock input data input/output. HW MUTE: This pin is active high > 2.5V < 9V. When high, all audio outputs are muted. ...
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... 12V 147 12.5k 12.5k 64 25k 10k – 7 – CXA2126Q Description Open collector logic pins Fast Blank output set input FBLK_IN1 or FBLK_IN2. High = 5.3V Low = 1.2V Connected to external emitter follower Fast Blank inputs. Low = < 0.4V High = > ...
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... Pin Pin Symbol No. voltage V RIN1 3 4.5V 5 LIN1 Equivalent circuit = 12V CC 4.5V 33k – 8 – CXA2126Q Description Audio signal inputs. A coupling capacitor is required for these inputs. (typ = 2.2µF) ...
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... At output, non-linearity = – 1.7Vp-p 5-step modulated staircase. (Chroma and Burst are 150mVp-p 4.43MHz) (Fig.2) as above. (Fig.2) Percentage reduction in sync pulse (0.4Vp-p), with tip at –1.2V input offset. (Fig.4) – 9 – CXA2126Q Nominal conditions (Ta = 25°C) Min. Typ. Max. Unit Min. ...
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... No load (Fig 1kHz, 0.5Vrms, unweighted response; LPF @400Hz, HPF @80kHz. (Fig 1kHz (Fig 1kHz (Fig 1kHz, 1Vrms input on one input, measure on any other audio output. (Fig.6) – 10 – CXA2126Q Min. Typ. Max. Unit 4.2 4.5 4 ...
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... Set (Fig. 1kHz, 0.5Vrms input. Set (Fig. 1kHz, 1Vrms input. (Fig.6) Offset voltage between any audio input and RTV, LTV outputs. (Fig.5) – 11 – CXA2126Q Min. Typ. Max. Unit –30 — +30 mV — 66 — ...
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... Minimum data preparation t SU;DAT time t Rise time R t Fall time F Minimum waiting time for t SU;STO stop preparation Nominal conditions (Ta = 25°C, Vcc_12V = 12V, VREG_9V = 9V) Conditions With SDA, 3mA current supplied – 12 – CXA2126Q Min. Typ. Max. Unit 2.3 — 5 — 1 — 0 — ...
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... CXA2126Q SCL SDA Fig. 1. Video system (d.c. test) – 13 – CXA2126Q V +12V +12V Measurement BC547B BC547B point +9V 20 ...
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... BC547B + CXA2126Q SCL SDA – 14 – CXA2126Q V +12V +12V Measurement BC547B BC547B point 2 + ...
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... CXA2126Q SCL SDA V Measurement point Fig. 3. Video system (input impedance) – 15 – CXA2126Q + 56k ...
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... CXA2126Q SCL SDA Fig. 4. Video system (linearity) – 16 – CXA2126Q V +12V +12V Measurement BC547B BC547B point +9V ...
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... SW1 + CXA2126Q SCL SDA Fig. 5. Audio system (d.c. tests) – 17 – CXA2126Q Output measurement point + Input measurement point ...
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... When muting audio using hardware mute, SW1 is closed. HW mute +5V 1k SW1 + CXA2126Q SCL SDA – 18 – CXA2126Q Measurement point V 10k 600 24 2 600 22 2 +9V 20 Input signal ...
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... When muting audio using hardware mute, SW1 is closed. HW mute +5V 1k SW1 + CXA2126Q SCL SDA – 19 – CXA2126Q Measurement point 600 24 2 600 22 2 +9V Input signal ...
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... ROUT1 F 10 560 PHONO_R LOUT1 F 10 PHONO_L CC DIG_V NC 560 RTV F 10 560 VOUT5 LTV F 10 DIG_GND VOUT6 HW_MUTE VOUT3 VOUT2 VOUT1 VOUT4 TV_FBLANK NC – 20 – CXA2126Q AUD_BIAS LIN2 NC RIN2 SDA VIN9 SCL VIN8 VID_GND VIN6 LIN1 VIN5 RIN1 VIN3 NC ...
Page 21
... Each video output can be individually turned off using the I and hence the current consumption of the external emitter followers is reduced. VID_V = 9V CC Switch 100 Amp 120k Vbias Vbias Video Element 2 C. When turned off, the output is high impedance – 21 – CXA2126Q +12V Scart Out BC547B 75 Load 75 1k ...
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... TV Audio Output Volume 0, –63dB + mute 8dB 1dB 0/6dB ZCD Mono Switch 8dB 1dB 0/6dB Switchable Amp Fig. 2-1. TV Audio Output 90µs (540µs) un-mute the output buffer. Such a period provides – 22 – CXA2126Q 2 35 PHONO_R RTV Scart Pin 2 40 560 LTV ...
Page 23
... Mono Output The mono output is a mix of the TV right and left channels will only be implemented when a minimal (ie zero VCR Audio Output MONO SWITCH Mute Fig. 2-2. VCR Audio Output – 23 – CXA2126Q 2 C write mode. ROUT1 Scart Pin 2 34 560 ...
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... EVF Vid_Switch 1 TV Vid_Switch 2 VCR Not used FBLK Vout6 Vout5 Vout4 on/off on/off on/off mono mono Not used VCR TV – 24 – CXA2126Q DATA4 A DATAn Write 0 TV Aud Z.C.D Mute Aud_Switch 1 TV Aud_Switch 2 VCR Not used FNC LOGIC Vout3 ...
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... At Pin 64, AV switch monitors the voltage of pin 8 from VCR scart, and records status. ZC Status: ZC Status = 1 indicates that zero cross condition has been achieved after the ZCD is turned on. P.O.D.: Power On Detect. P.O. when DIG_V approximately 5V Status P.O.D. voltage rises above a threshold level of CC – 25 – CXA2126Q Read x FNC_VCR ...
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... VIN8 Digital encoder VIN9 Digital encoder VIN10 VCR Not used Not used VIN3 Digital encoder VIN11 TV Not used Not used Bias Video mute – 26 – CXA2126Q Comment Digital encoder Digital encoder VCR Not used Digital encoder TV Not used Video mute ...
Page 27
... Threshold voltage is approximately 0.75V at the scart input. 2 Fast Blanking I C Control In the CXA2126Q, there are two fast blanking inputs, one associated with the VCR RGB/CVBS input (FBLANK_IN2), and another associated with the Digital Encoder input (FBLANK_IN1). These can be selected addition to the two blanking inputs, the fast blank pin output can be set to a constant ...
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... Note) After power on output is internal TV mode ie the pin. FNC_TV CXA2126Q 2 C and is used to change the voltage on the function line to the TV. The Read Data8 > 10V > 4.5V < 7V < 2V Scart Pin 8 Fig. 5-1. TV Function Switch Output – 28 – CXA2126Q 10k ...
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... A single logical output pin is provided. This is controlled via the I Specification bit 0 = open collector/high output impedance bit 1 = Vsat (to 0.2V) Vmax at logic pin = 12V Imax during current sink = 1mA 2 C and is an open collector output. Open collector logic LOGIC outputs Logic cct. Fig. 6-1. Logic Output Interface – 29 – CXA2126Q ...
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... LTV, LOUT1 Lin1 Lin2 Not used Lin3 Audio mute Audio mute Audio mute Audio mute Volume Fine Control Gain 0dB –1dB –1dB –3dB –4dB –5dB –6dB –7dB Gain 0dB –8dB –16dB –24dB –32dB –40dB –48dB –56dB – 30 – CXA2126Q ...
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... TV Aud Mute Data 1 Bit 1 Data 7 Bit Note) After power on TV mute and ZCD are set to 0. ZCD Data 1 Bit 0 RTV, LTV, Phono_R, Phono_L, Mono outputs 0 Un-mute immediately 1 Un-mute on next zero cross 0 Mute immediately 1 Mute on next zero cross – 31 – CXA2126Q ...
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... Stray capacitance on pins Vout1-8 must be kept to a minimum by placing loads as close to the pins as possible. 6) The supply voltage on pin 58 "V series diode or zener diode may be used to limit the voltage at this pin. an emitter follower or video line driver is required to be _12V" should not exceed +12V. If the supply has poor regulation then a CC – 32 – CXA2126Q ...
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... Input [Vrms –2 –4 –6 100 100k Typical audio output distortion Inputs RIN2, 3/LIN2, 3 selected 0.1 0.01 0.001 0.0001 0 Audio frequency characteristics Input = 0.3Vp-p 10k 100k 1M Frequency [Hz] Video frequency characteristics 10M 1M Frequency [Hz] – 33 – CXA2126Q 3.3 Input [Vrms] 10M 50M ...
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... SONY CODE EIAJ CODE JEDEC CODE 64PIN QFP(PLASTIC) 23.9 ± 0.4 + 0.4 20.0 – 0 0.15 2.75 – 0.15 0.4 – 0.1 M 0.2 PACKAGE STRUCTURE PACKAGE MATERIAL QFP-64P-L01 LEAD TREATMENT LEAD MATERIAL QFP064-P-1420 PACKAGE MASS – 34 – CXA2126Q + 0.1 0.15 – 0.05 0.15 + 0.2 0.1 – 0.05 + 0.35 0° to10° EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 1.5g ...