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11AK20 CHASSIS CIRCUIT DESCRIPTION GENERAL INFORMATION : This document provides detailed information about the fully I2C controlled Television Chassis named 11AK20. 11AK20 is based on the bus controlled circuits in which all the filters, traps and delay lines have been integrated. Therefore the numbers of external components are reduced and the user, service and factory adjustments are made through I2C BUS control. 1. This chassis has been designed mainly for the 90°, 14 and 15 picture tubes. This chassis has a SMPS circuitry which has been designed to get low stand-by power consumption (less than 3W) as an option. On the other hand, it also has wide range (90-270V 50/60 Hz) mains as an option. The chassis covers almost all the existing worldwide transmission and colour standards as PAL B/G/I/M/N, SECAM B/G/D/K/K/L/L and NTSC M (3.58), NTSC (4.43) using same Main Printed Circuit Board by means of optional components and settings. Tuning system is Voltage Synthesized for all systems Except NTSC M and PAL M/N applications but it is Frequency Synthesized for NTSC M and PAL M/N applications. Furthermore, chassis has also European Wide-range teletext solution as an option. This solution supports all the European teletext standards optionally as 1 page normal, fast and top text modes. The chassis has Euro AV Plug (Scart Socket) for Peritel and SVHS connections. The pictures in 16 - 9 format can be displayed via this Peritel connection. Other optional external connections are front AV input RCA jacks, back AV output RCA jacks and Headphone jack. The software has been developed with a menu driven user interface supporting all possible chassis versions with a storage capacity of 100 programs. 2. IF STAGE : The inputs for IF stage are IF inputs from Tuner to produce front-end Video and Audio, Video and Audio from Scart or front AV RCA jack to be able to select the internal or external video and audio according to the control signals which comes from microcontroller and STV 2118. Then, the resultant video and audio signals are sent to video processing stage and audio output stage, respectively. Furthermore, front-end video and audio signals are sent to scart and or back AV RCA jacks. This part also produces some control signals for tuner and microcontroller. This stage was designed for processing positive (optional) and negative modulated mono and one scart applications. STV 8223 is the IF IC that is used in only negative modulation. There is an alignment which is the VCO adjustment (VL101). The procedure of alignment can be described briefly as follows : The IF signal is applied to the IF inputs in accordance with the standards (for B/G 38.9MHz) at pin # 1 and 2 of SAW filter (Z101). Adjust the VL101 until getting 2.5 V at pin # 9 of uC (IC501). dc This stage is also used for negative and positive modulated, mono applications. STV 8224 (negative and positive modulation and FM sound) (IC 101) and STV 8225 (AM sound) (IC102) are the IF ICs. There are two alignments in this case, which are the VCO adjustment (VL101) for B/G - L standards and VC101 for L standard. The procedure of the alignments can be described briefly as follows : The system is Switched to B/G standard reception, The IF signal is applied to the IF inputs in accordance with the standards (for B/G 38.9MHz) at pin # 1 and 2 of SAW Filter Z101. Adjust the VL101 until getting 2.5 V at pin # 9 of uC. dc The system is Switched to L standard reception, The IF signal is applied to the IF inputs in accordance with the standards (for L 33.9MHz) at pin # 1 and 2 of SAW Filter Z101. Adjust the VC101 until getting 2.5 V at pin # 9 of uC.
dc
2.1 Video and Sound IF System & Switch IC STV8223: STV 8223 is a picture and sound IF processor for negative application. The architecture of the video and sound demodulator, which are both based on PLL structure, allows a very good linearity of the Intermediate Frequency Response and an application with very few external components and adjustments. The volume on the audio signal is controlled through a DC level (pin # 13) which is provided from STV 2112/2116/2118 where all the I 2C decoding is realized. STV 8223 also provides the audio and video switches for scart - AV applications. The IF inputs at pins # 19 and # 20 are driven by Tuner via Saw filter (Z101). The baseband signal produced from these IF inputs appears at pin # 3. This signal is used to produce sound trapped video signal and intercarrier sound signal. For multi-standard models, a switched trap circuitry is used (Q103, Q104, Q105). This internal video signal is fed to pin # 10 of this IC for internal-external (coming from scart) video switching and to the base of the buffer transistor Q102 for the video output of the scart connector. The intercarrier signal used for reproducing sound, passes through the band pass filter Z103 with center frequency 5.5MHz for B/G standard or Z104 for I (6.0MHz) or Z105 for D/K (6.5MHz) or Z106 for M/N (4.5MHz) in according to selected system by intercarrier signal switching circuitry (D106, D107, D108, D109, D110) and resultant signal is applied to the pin #8 of the IC which is the input of limiter and SIF PLL stage.
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The switch control signal is supplied by microcontroller. The limiter and SIF PLL output pin # 15 which is connected to the deemphasis capacitor drives audio out of the scart connector and AV jack. The external inputs of IC, which are pin # 12 for video and pin # 16 for audio, are connected to the related scart connector inputs or AV RCA jack inputs. The internal-external signal selection for monitoring is made by control voltage at pin # 8 produced by STV 2118. The selected video at pin # 11 drives video processing stage. On the other hand, the selected audio is processed in volume control stage in according with DC control voltage at pin # 13 and then, it is sent from pin # 14 to sound output stage. The IF block produces control signals, which are AGC for tuner at pin # 23 in according to voltage of pin # 24 controlled by microcontroller pin # 2. 2.2 Multi-Standard Video and Sound IF System & Switch IC STV 8224 and AM SIF IC STV 8225 : STV 8224 is a picture and sound IF processor for negative and positive applications. The architecture of the video and sound demodulator, which are both based on PLL structure, allows a very good linearity of the Intermediate Frequency Response and an application with very few external components and adjustments. The volume on the audio signal is controlled through a DC level (pin #13) which is provided from STV 2112/2116/2118 where all the I 2C decoding is realized. STV 8224 also provides the audio and video switches with STV 8225 for one scart applications. The IF inputs at pins # 19 and # 20 are driven by Tuner via SAW filter (Z101) which is K6256 for B/G - L/L applications. This saw filter is switchable according to the control signals produced by microcontroller. The baseband signal at pin # 3 is produced from these IF inputs according to the control signal at pin # 4. This control signal comes from STV 2118 Multi-Switch Output according to the selected system standard. The baseband signal is used to produce sound trapped video signal and on the other hand to produce intercarrier sound signal for B/G standard. This internal video signal is fed to pin # 10 of this IC for internal-external (coming from scart) video switching and to the base of the buffer transistor Q102 for the video output of the scart connector. For the internal and external video switching, external video enters from pin #12, and then, selected video is sent from pin # 11 to video processing part. The intercarrier signal used for reproducing sound, passes through the band pass filter Z103 with center frequency 5.5MHz for B/G standard and resultant signal is applied to the pin # 8 of the IC STV 8224 which is the input of limiter and SIF PLL stage. The limiter and SIF PLL output pin # 15 which is connected to the deemphasis capacitor drives pin # 5 of the IC STV 8225 as FM Sound Input in order to be able to select the appropriate (FM or AM) audio signal for producing audio out of the scart connector. The selected signal at pin # 9 of STV8225 drives external audio output connections. On the other hand, the audio switch in STV 8224 is used to select the internal FM signal or the output of STV 8225 (pin # 7), which selects the internal AM signal or External audio signal (at pin # 11) coming from scart socket. The selected audio is processed in volume control stage in according with DC control voltage at pin # 13 and then, it is sent from pin # 14 to sound output stage. The IF signal is filtered at Z102 saw filter which is switchable according to the control signals produced by microcontroller for L or L mode. Output of SAW is connected to pin # 1 and 14 of SIF IC STV 8225(IC 102) for AM sound producing. The audio switches in STV 8225 selects the signals according to DC voltage at # 10 of STV 8225 . The IF block produces control signals, which are AGC for tuner at pin # 23 in according to voltage of pin # 24 controlled by microcontroller and AFC for microcontroller at pin # 2. There are two main switching circuits. First one is the VCO Frequency Switching circuit and the second one is the Saw Filter Switching circuit which covers both Video and Sound saw filters. The control voltage for VCO switching circuitry is the L/L signal produced by microcontroller. The logic of this signal, which is defined by MAC-15, is as given in Table 2.1. Table 2.1 The Logic of the L/L Switching Voltage (based on MAC-15)
Selected Mode L/L
Modes other than L L
Switching Voltage
HIGH LOW
Adjusted Frequency
38.9 MHz 33.9 MHz
This control voltage is applied to R121. When this voltage is LOW, diode D105 is ON and VC101, C129 and C130 are connected in parallel to the reference tank circuit VL101. On the other hand, This circuit is disconnected when L/L voltage is HIGH since D105 is OFF. In according to selected system configuration, it must be used multistandard switched type SAW filters. For this reason an optional circuitry is applied this stage by D101, D102, (and if using L/L, D103 ,D104 for SIF SAW Z102). 3. SIGNAL PROCESSING PART : This part processes video coming from IF part, RGB coming from Scart, Teletext and Controller in order to drive Horizontal and Vertical deflection stages and CRT baseboard and to produce some control voltages by means of Bus-controlled PAL-SECAM-NTSC TV Processor IC, STV 2112/2116/2118 and 64msec Delay Line IC, STV2180. The detailed functional descriptions of these ICs are given in the following subsections.
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3.1 Bus-controlled Multi-Standard TV Processor IC, STV 2118 : The STV 2118 (IC 401) is a fully bus controlled IC for TV Luma, Chroma and Deflection processing. In order to make the alignments by microcontroller via I2C, the required data are transferred from microcontroller into the related registers of STV 2118. The main input for this IC are as follws : I2C Inputs from microcontrolle Y/CVBS Input from IF Part, external CVBS coming from scart or front AV RCA jack, external RGB and Fast Blank signals coming from Scart, R input is also used for Chroma input in SVHS Mode OSD and TELETEXT RGB and Fast Blank signals coming form both microcontroller and teletext processor IC BCI (Black Current Information) coming from CRT Baseboard BCL (Beam Current Limiting) information from Horizontal Output Stage Line Flyback Sample coming from Horizontal Output Stage Delayed R-Y and B-Y signals coming from Delay Line IC STV 2180 Detailed Features and the internal block diagram of the IC STV 2118 are given in following subsections: 3.1.1 Deflection Circuit : The deflection part includes a fully integrated sync-separator locked to a 500 kHz VCO with external resonator (X401), two phase locked loops for horizontal deflection, vertical count down with 50 Hz and 60 Hz operation for field frequency. Vertical output pulse is 10.5 lines long at pin # 35, furthermore horizontal output pulse is 28 msec on open collector pin # 36. The horizontal output is at high level when Vcc increases from 0V to 6.8V. On shutting down, the horizontal pulse disabled when Vcc is below 6.2V. When vertical pulses are disappeared, horizontal output is disabled by microcontroller for keeping CRT phosphor. Line position adjustment is controlled by bus using related service mode. Bus controlled output voltage at pin # 34 is used to adjust vertical amplitude at vertical output stage via R705, R706 and R707. Bus controlled vertical position information is produced from high level of the vertical pulse pin # 35 and this signal is used to adjust vertical positioning at vertical output stage via R701, R703, R704, C701, D701 and Q701. The sandcastle signal at pin # 37 is used to control the external baseband chroma delay line (STV 2180 -IC 402- pin # 6). 3.1.2 Filters : All filters (integrated trap filter, integrated chroma bandpass, integrated bell filter for SECAM, integrated delay line) are tuned with a reference PLL. The PLL consists of a lowpass filter, a phase comparator, a loop filter (an external capacitor C423 on pin # 8). The reference signal is the continuous carrier wave from the VCO (4.43 MHz or 3.58 MHz). The PLL will adjust the center frequency of the lowpass so that it will be equal to the reference signal. The tuning voltage of the PLL (memorized on pin # 8) will adjust all other filters. The cloche filter is fine-tuned with a second PLL operating during frame retrace. Tuning voltage is memorized on an external capacitor C424 at pin # 9. 3.1.3 Video Circuit : Video part includes two RGB inputs, automatic cut-off control, DC cut-off adjustment, RGB gain adjustments, beam current limiting. Furthermore, user video settings (contrast, saturation, brightness and sharpness controls) are performed by this block. RGB output pins are as follows: R output is pin # 29, G output is pin # 28 and B output is pin # 27. The beam current information is fed to pin # 31 via R411 and D403. This control voltage will act on contrast first, then the brightness will be decreased when contrast attenuation reaches -5dB. Automatic cut-off function is realized according to the BCI information at pin # 30. Sequential cut-off current measurements are made during three lines after frame blanking signal. 3.1.4 Chroma Circuit : The chroma part includes PAL, SECAM, NTSC demodulator. An external base band delay line (STV 2180 IC402) is used in this concept. R-Y and B-Y outputs of STV 2118 (pin # 40 and pin # 41) are sent to STV 2180 to get 64msec delayed signals. The PAL, SECAM or NTSC standard selection is made by automatic standard identification. Three Xtals for PAL M (X404), PAL N (X405) and NTSC M (X403) and their switching circuitry (Q401, Q402, Q403, Q404, D401, D402) are used in PAL M/N and NTSC M models only. SVHS selection is made by microcontroller via bus control.
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3.1.5 Other Functions : Volume Control and Mute output is pin # 10. The voltage range for volume control is 0.5V to 5V, whereas below 0.1V is used for muting. The output of this pin is controlled by microcontroller via bus and the value is saved in related register of the STV 2118. The selection of the IF standard (Positive or Negative Vision Modulation) and the TV / SCART(AV) mode is controlled by bus. The selection is converting in four voltages which are used to control the IF ICs STV 8224 and STV 8225 on pin # 11. Related voltage levels and their situations are tabulated as follows: Table 3.1 Related voltage levels and their situations for pin # 11 of STV 2118.
SITUATION STANDARD NEGATIVE POSITIVE POSITIVE NEGATIVE SOURCE TV TV SCART SCART
VOLTAGE RANGE (V )
11
MIN. 0 2.9 5.2 7.88
MAX. 0.7 3.8 6.1 9
3.2 Base Band Chroma Delay Line IC STV 2180 : The STV 2180 is an integrated base band chroma delay line with one line delay, which has been designed to match chroma decoders with color difference signal outputs (R-Y) and (B-Y). This IC has dual switched capacitors delay line with 3 MHz clock and integrated filters to suppress the residual clock components. It designed to work in conjunction with STV 2112/2116/2118 and it allows an adjustment free application. The inputs for this IC are as follows : (R-Y) at pin # 2 coming from STV 2118 (B-Y) at pin # 14 coming from STV 2118 Sandcastle Pulse at pin # 6 coming from STV 2118 On the other hand, outputs of this IC are as follows : Delayed (R-Y) at pin # 3 Delayed (B-Y) at pin # 4 4. HORIZONTAL OUTPUT AND EHT STAGE : The horizontal pulses, from pin #36 of IC401, are connected to base of driver transistor Q601 through Q601, R603, C601. The driver circuitry (Q601, R604, C602, L602, R608) drives the horizontal deflection output transistor BU808DFI (Q602). TR601 is the EHT (Extra High Tension) transformer. The 112V supply voltage for the stage is connected at # 2. TR601 transformer generates EHT, focus and G2 voltages, required by picture tube. Furthermore, the 200V supply for video output, 26V supply for vertical output and heater drive current are derived from this transformer. The beam current information from pin #8 of TR601 is used for reducing the contrast at excessive long term average beam current and compensation voltage to vertical output to stabilize picture height. The flyback signal sample (AC coupled and clipped by R606, C614, C604, D602, D601) is used to generate sandcastle pulse for video processor IC and horizontal pulse (Q603) required by uC. 5. VERTICAL OUTPUT STAGE (TDA 1771) The TDA1771 (IC701) vertical deflection integrated circuit is used for output of vertical stage. Trigger pulses from STV2118 feeds to pin # 3 of TDA1771. The signal produced by built in ramp generator synchronizes input trigger pulses. Amplitude is adjusted by an independent input pin (# 4). Built in voltage generator output, feedback information by pin # 8, internal sawtooth signal and amplitude information are applied to output OP-AMP. This output stage has also thermal protection and flyback generator for reliability and effectivity. Applied pulse from STV2118, contains vertical position information as maximum dc level of signal and is extracted by Q701 and fed as a part of feedback to output stage. Vertical shift DC supply is obtained via R716. The amplitude control is supplied by STV2118. Vertical deflection output stage is supplied by +26V output of FBT and D605, C603 circuitry. 6. SOUND OUTPUT STAGE (TDA2822M) : TDA2822M is used as the AF output amplifier. It is supplied by +12V coming from a separate winding in the SMPS transformer (T802). Pin #14 of the STV8223 ( or STV 8224) is AC coupled to the input pin #7 of the TDA2822M via a resistor divider. Maximum audio output power at 10% THD is 1.5W. Q301 for start up muting and Q302 for muting by uC are used, and an alarm signal by uC is fed to this input.
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7. POWER SUPPLY (SMPS) : The DC voltage sources required at various stages of the chassis are provided by an SMPS controlled by the IC801 (MC44603 for common models and MC44604 for low power consumption on stand by mode models). This IC is designed for driving, controlling and protecting the switching MOSFET transistor of SMPS (Q801). This supply has three outputs; one 112V output which is used for horizontal output and 33V generation needed by tuner section, one 16V output for all small signal sections an uC and one for audio output section. This chassis may be used in 90 - 270 volt with appropriate optional circuitry and components. The uC which is supplied by a source designed regulator with zener diode (D814) controls stand by mode by switching Q803 (for 44604 application Q806). 8. uC (MICROCONTROLLER) : The microcontroller hardware that is member of the ST6 family has a TV receiver control software with menu control. It controls the chassis through IIC bus, PWM outputs and I/O ports. Dominant features of controller are control of optional teletext, outputs for OSD, IR control signal receiving, and internal EEPROM. The controller has IIC communication port at # 40 , # 41 and OSD driver (R,G,B,FBl) at # 22, # 23, # 24, # 25. PWM control outputs are tuning # 34; vertical linearity adjustment # 1; AGC adjustment # 2. Other control outputs are Muting - video ident # 3; led driver # 4; system switches # 5, # 6, # 8, # 19, # 20, # 36; tuner switches # 18, # 19 and inputs are AFC information from IF # 9; keyboard # 10, # 11, # 13, # 14; scart mode ident (4/3-16-9) # 38, # 39; horizontal sync # 26; vertical # 27; infrared # 35 and reset # 33. The uC starts system according to option diodes configuration (D501, D503, D505, D506, D508). The controller has also a software which is able to control some service adjustments: R,G,B gain; R,G cut off; vertical position; vertical linearity; horizontal position; vertical amplitude; AGC; language selection for teletext. For enter to service mode followed procedure must be act within four seconds: 1Press volume down button on the keyboard; 2Press prog button on the R/C hand set; 3Press - - button on the R/C hand set; 4Press TV button on the R/C hand set; Parameters can be sellected by program up and down, parameter adjustments can be done by volume up and down buttons. Memorizing the adjusted parameters can be done by pressing red button. For exit from service mode Press TV button. 9. TELETEXT : The video signal coming from IF stage is fed to Data Slicer IC001. Then, there are two possibilities for decoding part; CF70095 or CF70195 for 1-Page simple text applications and CF7020X family for fastext and toptext applications. Finally, R, G, B and FBL signals are sent to the related inputs of STV2118. The alignment procedure for CF70095 or CF70195 application is as following: 1Apply a video with teletext transmission and select for teletext. 2Adjust the coil (VL001) for the voltage at pin # 28 2.5V. 10. CRT BASE-BOARD : When RGB signals enter the input of the video amplifier stage (CRT base-board), they are amplified by means of three symmetrical video amplifier stages. For this purpose three 2SC2482 high voltage, video output transistors are used. So, high gain-bandwidth product is achieved. Furthermore black level changes at the output amplifiers caused by temperature or component agings are compensated by means of a closed loop control system. For this reason the cathode current information (ICAT) is sent to STV2118.
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MC44603
GENERAL DISCRIPTION The MC44603 is an enhanced high performance controller that is specifically designed for off-line and dc-to-dc converter applicitions. This device has the unique ability of automatically changing operating modes if the converter output is overloaded, unloaded, or shorted, offering the designer additional protection for increased system reliability. The MC44603 has several distinguishing features when compared to conventional SMPS controllers. These features consist of a foldback facility for overload protection, a standby mode when the converter output is slightly loaded, a demagnetization detection for reduced switching stresses on transistor and diodes, and a high current totem pole output ideally suited for driving a power MOSFET. It can also be used for driving bipolar transistor in low power converters (<150 W). It is optimized to operate in continuous mode. Its advanced design allows use in current mode or voltage mode control applications. FEATURES : Current or Voltage Mode Controller n Operation up to 250 kHz Output Switching Frequency n Inherent Feed Forward Compensation n Latching PWM for Cycle-by-Cycle Current Limiting n Oscillator with Precise Frequency Control High Flexibility n Externally Programmable Reference Current n Secondary or Primary Sensing n Synchronization Facility n High Current Totem Pole Output n Undervoltage Lockout with Hysteresis Safety/Protection Features n Overvoltage Protection Against Open Current and Open Voltage Loop n Protection Against Short Circuit on Oscillator Pin n Fully Programmable Foldback n Soft-Start Feature n Accurate Maximum Duty Cycle Setting n Demagnetization (Zero Currrent Detection) Protection n Internally Trimmed Reference GreenLine Controller: Low Power Consumption in Standby Mode n Low Startup and Operating Current n Fully Programmable Standby Mode n Controlled Frequency Reduction in Standby Mode n Low dV/dT for Low EMI Radiations. PINNING
1- VCC 2- VC
Advance Information Mixed Frequency Mode GreenLine PWM Controller: Fixed Frequency, Variable Frequency, Standby Mode
3- OUTPUT 4- GND 5- Foldback Input 6- Overvoltage Protection 7- Current Sense Input 8- Demagnetization Detection 9- Synchronization Input 10- CT 11- Soft-Start/Dmax /Voltage-Mode 12- RP Standby 13- E/A Out 14- Voltage Feedback 15- RF Standby
16- Rref
Rref sets the internal reference current. The internal reference current ranges from 100µA to 500 µA. This requires that 5.0kW < Rref < 25 kW.
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This pin is the positive supply of the IC. The operating voltage range after startup is 9.0 to 14.5V. The output high state (VOH) is set by the voltage applied to this pin. With a separate connection to the power source, it can reduce the efffects of switching noise on the control circuitry. Peak currents up to 750mA can be sourced or sunk, suitable for driving either MOSFET or Bipolar transistör. This output pin must be shunted by a Schottky diode, 1N5819 or equivalent. The ground pin is a single return, typically connected back to the power source;it is usedas control and power ground. The foldback function provides overload protection. Feeding the foldback input with aportion of the VCC voltage (1.0V max) establishes on the system control loop a foldback characteristic allowing a smoother startup and sharper overload protection. Above 1.0V foldback input is inactive. When the overvoltage protection pin receives a voltage greater than 17V, the device is disabled and requires a complete restart sequence. The overvoltage level is programmable. A voltage proportional to the current flowing in to the power switch is connected to this input. The PWM latch uses this information to terminate the conduction of the output buffer when working in a corrent mode of operation. A maximum level of 1.0V allows either current or voltage mode of operation. A voltage delivered by an auxiliary transformer winding provides to the demagnetization pin an indication of the magnetization state of the flyback transformer. A zero voltage detection corresponds to complete core saturation. The demagnetization detection ensures a discontinuous mode of opertion. This function can be inhibited by connecting Pin 8 to Gnd. The synchronization input pin can be activated with either a negative pulse going from a level between 0.7V and 3.7V to Gnd or a positive pulse going from a level between 0.7 and 3.7V up to a level higher than 3.7V. The oscillator runs free when Pin 9 is connected to Gnd. The normal mode oscillator frequency is programmed by the capacitor CT choice together with the Rref resistance value. CT, connected between Pin 10 and Gnd, generates the oscillator sawtooth. A capacitor, resistor or a voltage source connected to this pin limits The switching duty-cycle. This pin can be used as a voltage mode control input. By connecting Pin11 to Ground, the MC44603 can be shut down. A voltage level applied to the RP Standby pin determines the output power level at which the oscillator will turn into the reduced frequency mode of operation (i.e. standby mode). An internal hysteresis comparator allows to return in the normal mode at a higher output power level. The error amplifier output is made avaliable for loop compensation. This is the inverting input of the Error Amplifier. It can be connected to the switching power supply output through an optical (or other) feedback loop. The reduced frequency or standby frequency programming is made by the RF Standby resistance choice.
ST 6385
8 BIT HCMOS MCUs FOR TV VOLTAGE SYNTHESIS WITH OSD
GENERAL DESCIRIPTION The ST6385,86,87,88 microcontrollers are member of the 8-bit HCMOS ST638X family, a series of devices specially oriented to TV applications. Different pin-out and peripheral configýration are avaiable to give the maximum aplication and cost flexibility. All ST638X members are based on a building block appoach: a common coreis surrounded by a combination of on-chip peripherals (macrocells) avaiable from a standard library. These peribherals are designed with the same Core technology providing full compatibility and short desing time. Many of these macrocells are specially dedicated to TV applications. The macrocells of the ST638X family are : two Timer peripherals each including an 8-bit counter with a 7 bit software programmable precaler (Timer), a digital hardware activated watchdog function (DHWD), a 14-bit voltage synthesis tuning pripheral, a serial peripheral interface (SPI), up to six 6-bit PWM D/A converters, an AFC A/D converter with 0.5V resolution, an on-screen display (OSD) with 15 characters per line, 128 characters (in two banks each of 64 chracaters). In addition the following memory resources are available: program ROM (20K), data RAM (256 bytes), EEPROM (384 bytes). Refer to pin configurations figures and to ST638X device summary (Table 1) for the definition of ST638X family members and a summary of differences among the different types. FEATURES n 8-bit Architecture n HCMOS Technology n 8Mhz Clock n User Program ROM: 20140 bytes n Reserved Test ROM: 336 bytes n Data ROM: User selectable size n Data RAM: 256 bytes n Data EEPROM: 384 bytes n 42-Pin Shrink Dual in Line Plastic Package n Up to 22 software programmable general purpose Inputs/Outputs,including 2 direct LED driving nOutputs n Two Timers each including an 8-bit counter with a 7-bit programable prescaler n Digital Watchdog Fuction n Serial Peripheral Interface (SP) supporting S-BUS/ I 2C BUS and standart serial protocols n Up to Six 6-Bit PWM D/A Converters n 62.5KHz Output Pin (ST6386,88 Only) n AFC A/D converter with 0.5V resolution n Five interrupt vectors (IRIN/NMI, Timer 1 & 2, VSYNC, PWR INT.) n 14 bit counter for voltage synthesis tuning n On-chip clock oscillator n 5 Lines by 15 Characters On-Screen Diplay Generator with 128 Characters n Byte efficient instruction set n Bit test and jump instructions n Wait and Bit Manipulation insructions n True LIFO 6-level stack n All ROM types are supported by pin-to-pin piggy-back versions. n The develeopment tool of the ST638X microcon-trollers consists of the ST638X-EMU emulation and development system to be connected via a standard RS232 serial line to an MS-DOS Personal Computer. PINNING 1- DA0 2- DA1 3- DA2 4- DA3 5- DA4 6- DA5 7- 62.5KHz OUT 8- AFC 9- VS 10- R,G,B, BLANK 11- HSYNC, VSYNC 12- OSDOSCIN 13- OSDOSCOUT 14- TEST 15- OSCIN 16- OSCOUT 17- RESET 18- PA0 Output, Open-Drain, 12V Output, Open-Drain, 12V Output, Open-Drain, 12V Output, Open-Drain, 12V Output, Open-Drain, 12V Output, Open-Drain, 12V Output, Open-Drain, 12V Input, High Impedance, 12V Output, Push-Pull Output, Push-Pull Input, Pull-up, Schmitt Trigger Input , High Impedance Output, Push-Pull Input Pull-Down Input, Resistive Bias, Schmitt Trigger to Reset Logic Only Output, Push-Pull Input, Pull-up, Schmitt Trigger Input I/O, Push-Pull, Software Input Pull-up, Schmitt Trigger Input
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19- PA1 20- PA2 21- PA3 22- PA4 23- PA5 24- PA6 25- PA7 26- PB0 27- PB1 28- PB2 29- PB3 30- PB4 31- PB5 32- PB6 33- PC0 34- PC1 35- PC2 36- PC3 37- PC4 38- PC5 39- PC6 40- PC7 41- PC8 42- VDD, VSS
I/O, Push-Pull, Software Input Pull-up, Schmitt Trigger Input I/O, Push-Pull, Software Input Pull-up, Schmitt Trigger Input I/O, Push-Pull, Software Input Pull-up, Schmitt Trigger Input I/O, Open Drain, 12V, No Input Pull-up, Schmitt Trigger Input I/O, Open Drain, 12V, No Input Pull-up, Schmitt Trigger Input I/O, Open Drain, 12V, No Input Pull-up, Schmitt Trigger Input, High Drive I/O, Open Drain, 12V, No Input Pull-up, Schmitt Trigger Input, High Drive I/O, Push-Pull, Software Input Pull-up, Schmitt Trigger Input I/O, Push-Pull, Software Input Pull-up, Schmitt Trigger Input I/O, Push-Pull, Software Input Pull-up, Schmitt Trigger Input I/O, Push-Pull, Software Input Pull-up, Schmitt Trigger Input I/O, Push-Pull, Software Input Pull-up, Schmitt Trigger Input I/O, Push-Pull, Software Input Pull-up, Schmitt Trigger Input I/O, Push-Pull, Software Input Pull-up, Schmitt Trigger Input I/O, Open Drain, 5V , Software Input Pull-up, Schmitt Trigger Input I/O, Open Drain, 5V , Software Input Pull-up, Schmitt Trigger Input I/O, Open Drain, 5V , Software Input Pull-up, Schmitt Trigger Input I/O, Open Drain, 5V , Software Input Pull-up, Schmitt Trigger Input I/O, Open Drain, 12V , No Input Pull-up, Schmitt Trigger Input I/O, Open Drain, 12V , No Input Pull-up, Schmitt Trigger Input I/O, Open Drain, 12V , No Input Pull-up, Schmitt Trigger Input I/O, Open Drain, 12V , No Input Pull-up, Schmitt Trigger Input I/O, Open Drain, 12V , No Input Pull-up, Schmitt Trigger Input Power Supply Pins
STV8224B
MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES
GENERAL DESCRIPTION The STV8224B is a picture and sound IF processor for multistandart application with very few external components and adjusments. It provides the audio and video switches for one SCART plug application. AM sound demodulation is perfomed with the STV8225 add-on. FEATURES : n Výdeo PLL Demodulatýon n Sound PLL Demodulatýon n Posýtýve and Negatýve Modulation n AGC for BG and L Standards n Audýo Swýtch n DC Volume Control n Výdeo Swýtch PINNING 1- Pýf PLL Fýlter 2- AFC Output 3- CVBS Output 4- Swýtching Input (Standard+INT/EXT) 5- IF LC 6- IF LC 7- Audýo Hýgh Pass Fýlter 8- 2nd IF Sound Input 9- Audio and nd IF Decouplýng 10- Internal Výdeo Input 11- Výdeo Swýtch Output 12- External Výdeo Input 13- Volume Control+mute 14- Audýo Swýtch Output 15- FM Demodulated Audýo Output 16- External Audýo Input 17- VCC 18- Grount 19- IF Input 20- IF Input 21- ACG Capacýtor (L Standard) 22- ACG Capacýtor 23- Tuner AGC Output 24- Tuner AGC startýng poýnt Adjustment
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CF72416
TELETEXT
GENERAL DESCRIPTION The CF72416 is a new device comparable with the currently available CF72306 but having the added capability of extracting Video Programming System (VPS) data. The CF72416 forms the Analogue component of the texas Instruments (TI) teletext system. The device performans the functions of composite sync separation and both teletext and VPS data extraction and clock regeneration from the recevied video signal and passes clock, data and composite sync to the digital decoder chip. The same pins are used for either teletext or VPS data and are identified by the appropriate decoder. The CF72416 device has the following features and enhancements over the CF72306:(a) VPS data decoding. (b) Improved adaptive slicing level for the Sync seperator and sync noise information added to composite sync which when used with Texas Instruments Multipage and Eurotext decoders gives improved locking performance. (c) Minor board changes are required to upgrade to the CF72416 from the CF72306. The crystal oscillator is the same as used with the CF72306. The crystal specification is given below:13.875MHZ Crystal Specificatýon - Oscillation Mode ....................................................................... Fundamental Parallel - Frequency ................................................................................ 13.8750 MHz - Crystal Frequency Stability ....................................................... ± 150ppm * - Maximum Crystal ESR (steady-state) ....................................... 60 Ohms - Maximum Crystal ESR (start-up) .............................................. 120 Ohms - Maximum Shunt Capacitance ................................................... 7 pF - Maximum Motional Capacitance............................................... 30 fF - Crystal Load Capacitance ......................................................... 18 pF - Free Air Operating Temperature Range .................................... 0 to 70 º C - Drive Level ............................................................................... 1 mW max. - Ageing ...................................................................................... ± 5 ppm max for first year * Includes temperature stability and manufacturing tolerance. FEATURES n Extracts both Teletext and VPS data n Forms a custom 2-chip solution when used with an ASICTEXT decoder n Low power 1µm CMOS (<100mW) n Standard 20 pin/300mll package. n Tolerates a range of výdeo distortions n Operates with 13.875 MHz fundamental mode crystal. PINNING 1- TSIG 2- SSIG 3- SSIG 4- AGND1 5- OSC1 6- OSC2 7- AVCC 8- CREF 9- AGND2 10- BIAS 11- TSTAPLB 12- TCLK 13- TDATA 14- DGND2 15- OSCOUT 16- DVCC 17- WIND 18- DGND1 19- SYNC 21- TEXTSEL Signal pins = 14 Výdeo Sync Reference Výdeo Sync Input Výdeo Data Input Analogue Ground 13.875 MHz Oscilator 13.875 MHz Oscilator Analogue Vcc Video Data Reference Input Analogue Ground Internal Reference Test/Application Teletext Clock Teletext Data Digital Ground Oscillator Output Digital Vcc Timing Signal Digital Ground Separated Sync Output Sync Noise Select Note 1 Power pins = 6
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STV 2118B
BUS CONTROLLED PAL/SECAM/NTSC TV PROCESSOR
GENERAL DESCIRIPTION The STV2118B is fully bus controller IC for TV luma, chroma and deflection processing. Used with STV8224 (PIF/SIF/swicthes), TDA 1771 or TDA8174 (frame booster), STV2180(delay line), it allows to desing a PAL/SECAM/NTSC (BGDKILMN) set with very few external components and no adjustment. FEATURES : n I2C Bus Control Of All Functions n Integrated Fýlters (Trap,Badpass,Cloche) n Integrated Lumýnance Delay Lýne n PAL/SECAM/NTSC Chroma Demodulators n Automatýc Cut-Off Current Loop n Two PLLs Horýzontal Deflection n Vertýcal Cont down n Very Few External Components PINNING 1- GND2 2- CXTL2 3- CXTL1 4- CLPF 5- ACC 6- SDA 7- SCL 8- FTUN1 9- FTUN2 10- VOL 11- SWI 12- BOS D 13- GOS D 14- ROS D 15- FBOS D 16- BEXT 17- GEXT 18- REXT 19- FBEXT 20- Y/CVBS 21- GND1 22- VCC1 23- CHR/S VHS 24- CG 25- CB 26- CR 27- BO 28- GO 29- RO 30- ICAT 31- BCL 32- SXTL 33- SLPF 34- VAMP 35- VOUT 36- HOUT 37- LFB/SC 38- BYI 39- RYI 40- RYO 41- BYO 42- VCC2 Chroma/Scannýng Ground 3.58 MHz XTAL 4.43 MHz XTAL Chroma Loop Filter Acc Control Capacýtor Data Wýre I2C Bus Clock Wýre I2C Bus Fýlter Tunýng Cloche Fýlter Tunýng Volume and Mute Control Voltage If Standart and swýtch selectýon Os d Blue Input Os d Green Input Os d Red Input Os d RGB Insertýon External Blue Input External Green Input External Red Input Extrenal RGB Insertýon CVBS or Lumýnance Input Bus/Výdeo Ground Výdeo Supply Cromýnance INPUT/SVHS Selectýon Green Cut-Off Capacýtor Blue Cut-Off Capacýtor Red Cut-Off Capacýtor Blue Output Green Output Red Output Cathode Current Measurement Beam Current Lýmýter 503 kHz Ceramýc CScanning Loop Filter Amplýtude Control Voltage Vertýcal Output Horýzontal Output Lýne Flyback INPUT/SANDCASTLE Output B-Y Input R-Y Input R-Y Output B-Y Output Chroma/Scannýng/Bus Supply
11
M3004LAB1
REMOTE CONTROL TRASMITTER
GENERAL DESCRIPTION The M3004LAB1/M3004LD transmitter IC are designed for infarared remote control systems. It has a total of 448 commandswhich are divided into 7 sub-system groups with 64 commands each. The sub-system groupswith 64 commands each. The su-system code my be selected by a press button, a slider switch or hard wired . The M3004LAB1/M3004LD generate the pattern for driving the output stage. These patterns are pulse distance coded. The pulses are infared flashes or modulated. The transmission mode is defined in conjuction with the sub-system adress.Modulated pulses allow receivers with narrow-band preamplifiers for improved noise rejection to be used. Flashed pulses require a wide-band preamplifier within the receiver. FEATURES :
n n n n n n n n n
Flashed or modulated Transmission 7 Sub-System Address Hýgh-Current Remote Output at VDD = 6V (-IOH = 80 mA) Low Number Additional Components Key Release Detection by toggle bits Very Low Stand-by Current (<2µA) Operational Current < 1mA at 6V Supply Supply Voltage Range 2 to 6.5V Ceramic Resanator Controlled Frequency (typ. 450kHz) 11121314151617181920VDD DRV 6N DRV 6N DRV 6N DRV 6N DRV 6N DRV 6N DRV 6N OSC OUT OSC IN
PINNING 1- Remo 2- SEN 6N 3- SEN 5N 4- SEN 4N 5- SEN 3N 6- SEN 2N 7- SEN 1N 8- SEN 0N 9- ADRM 10- VSS
TDA1771
VERTICAL DEFLECTION CIRCUIT
GENERAL DESCRIPTION The TDA1771 is a monolithic integrated circuit in SIP10 package It is a full performance and very efficient vertical deflection circuit intended for direct of a TV picture tube in Color and B & W television as well as in Monitor and Data displays. FEATURES n Ramp Generator n Independent Amplýtude Adjutement n Buffer Stage n Power Amplýfýer n Flyback Generator n Internal Reference Voltage n Thermal Protection PINNING 1. Flyback Generator 2. VS 3. Invertýng Input 4. Buffer Output 5. Ramp Generator 6. Ground 7. Heýght Adjustment 8. Trýgger Input 9. Output Stage V S 10.Power Output
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POZ. NO VESKOD
Q602 C801 C802 C803 C609 C709 C819 J801 R718 R801 TH801 D811 D809 Q601 IC301 SW501 SW503 SW504 Z101 Z103 Z107 IC806 IC804 R821 D403 D513 D514 D515 D516 D601 D602 D606 D901 D902 D603 D605 D604 D806 D808 D814 D810 C804 C805 C806 C807 C914 C614 Q903 Q905 Q907 D201 D202 D203 D501 D505 D506 Q505 D006 D805 D508 C606 C603 1006000000 3611608081 3011041558 3011041558 3011041558 3032243058 3081020554 3202227458 3363380437 3364791137 3382295130 3391803000 3550827200 3551500261 3611606790 3621628220 4390415000 4390415000 4390415000 3750219630 3760105500 3780105500 3807250050 3621678050 3650003170 3374750237 3531941480 3531941480 3531941480 3531941480 3531941480 3531941480 3531941480 3531941480 3531941480 3531941480 3551900330 3551900330 3551901570 3551901590 3551901590 3571905100 3571933000 3201021156 3201021156 3201021156 3201021156 3201021156 3204094846 3611504210 3611504210 3611504210 3531941480 3531941480 3531941480 3531941480 3531941480 3531941480 3611502400 3531941480 3531941480 3531941480 3034341538 3036827078 4941412400 1007093003 3971600304 3621617710 3011041548 3034735038 3083301354 3084701358 3361001137 3621621800
DESCRIPTION
ELECTRONIC COMPONENT PART LIST
IC701 C604 C809 C607 C821 R829 IC402
ANTENNA ROD (W/ADAPTOR) TR BU808DFI CAP MKT 100NF 250V M AC CAP MKT 100NF 250V M AC CAP MKT 100NF 250V M AC CAP MKP 220NF 250V M CAP EL 1000UF 35V M CAP CER 2.2NF 4KV M RES FUSE 1/4W 0.33R J RES FUSE 1W 4.7R J RES WW 5W 2.2R J RAD. THERM.PTC DEGAUSS DUAL 250V DIODE BYV27-200 DIODE BYM26D TR BD679A IC TDA2822M SWITCH TACT SWITCH TACT SWITCH TACT FILTER SAW G1963 FILTER SER 5.5MHZ SFE 5.5MB FILTER SER TRAP TPS 5.5MHZ FUSE 2.5A 250V 5*20MM IC L7805CV SGS IC LM317T RES MG 1/2W 4.7M J DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 DIODE BYD33J DIODE BYD33J DIODE BA157 DIODE BA159 DIODE BA159 DIODE ZENER 5.1V ZPD DIODE ZENER 33V UZT 33B CAP CER 1NF 1KV M B CAP CER 1NF 1KV M B CAP CER 1NF 1KV M B CAP CER 1NF 1KV M B CAP CER 1NF 1KV M B CAP CER 4PF 2KV K SL TR BF421 TR BF421 TR BF421 DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 TR BF240 DIODE 1N4148 DIODE 1N4148 DIODE 1N4148 CAP MKP 430NF 250V J CAP MKP 6.8NF 1.6KV 3.5% POWER CORD 2.4MT 220V VDE R/C 930 VESTEL (S) SPEAKER 16R 3W STAR IC TDA1771 CAP MKT 100NF 250V K DL CAP MKP 47NF 630V J CAP EL 33UF 160V M CAP EL 47UF 160V M (HR) RES FUSE 10R 1W J IC STV2180 13
POZ. NO VESKOD
IR501 X401 X501 L802 TR601 TR801 L601 SW801 IC101 TU201 VL101 IC002 IC001 X001 IC501 X402 Q801 IC805 IC801 TR802 R606 D801 D802 D803 D804 L603 Q902 Q904 Q906 R925 3660138000 3760105030 3840380010 4013150017 4030001908 4060001100 4090109000 4390122000 3621682230 3924224314 4020008000 3620670204 3623172416 3840113920 3621663870 3840144311 3610002600 3620078090 3620246030 4042003900 3372240237 3551940070 3551940070 3551940070 3551940070 4262220027 3612024820 3612024820 3612024820 3361590237 4071409013 5515030001 4941412410 5105135005 5501045086 5501045088 5513040001 5507000139 5509195200 5509195201 5509195202
DESCRIPTION
PREAMPLIFIER TFMS1380 FILTER SER 503KHZ XTAL 8MHZ COIL CHOKE 150UH 0.82A RAD TRF FBT 90ø (AK20) LINE FILTER 2*27MH LINEARITY COIL 50UH (06-06A) SWITCH ON/OFF PANASONIC IC STV8223 TUNER WSP (VST) ADJ COIL VIF 38.9 Q80 IC CF70204 IC CF72416 XTAL 13.875 IC ST6387 VES/M15-01 XTAL 4.433619 MHZ (AK15) TR MTA-2N60E IC AN7809 IC MC44603 TRF SMPS AK20 90' (170-270V) RES MG 1/2W 220K J DIODE 1N4007 DIODE 1N4007 DIODE 1N4007 DIODE 1N4007 CHOKE PEAKING COIL 22UH K TR 2SC2482 TR 2SC2482 TR 2SC2482 RES FUSE 1/2W 1.5R J DEGAUSS COIL&EART CABLE (14) CABLE HOLDER CRT (I) POWER CORD ASSY.(2.4MT W/VDE) SPRING ON/OFF SWITCH BUTTON ON/OFF 3745 GRAY (S) BUTTON FUNCTION 3745 (I) LENS PRE-AMP 8*28.5MM (I) FRONT 3745 W/H WO/J AKAI (P) SNOW BOX ASSY.3745/55 SNOW BOX-TOP 3745/55 SNOW BOX-BOTTOM 3745/55
14