13. Circuit Description

Transcription

1 13. Circuit Description 13-1 Overall Block Description Supplementary Functions Processor Block The functional part of a direct view type TV consists of the System, Deflection and Power parts. The Ass'ys are classified by the corresponding functions unlike the existing model, and the chassis consists of two layers by adopting a low depth CRT. Unlike the existing model (K60A), the Deflection Block has been implemented with a separate Ass'y. The Power Block is similar to that for the existing model (K60A). Although the System Block looks similar to the D-Module of the existing model (K60A), it handles most input and output signals by implementing the Micom Block, Tuner Block and Audio AMP Block within it. The AV signal is input through the AV port and Side AV port of the System Board and multiplexed by TEA6425 and AD converted by VPC3230, MPEG and Digital Audio decoded by S5H2020A and then I2S processed by S3C2800X. Finally, the visual quality improvement IC, DNIe, improves the visual quality. The audio signal is processed as for K60. A MUX has been added to enable selection of HDMI and the DTV signal and the Audio Delay Module has been implemented on the System Board. The HDMI function has been additionally added to the existing DVI function and the interface has been designed so that the interface connections of digital devices can be made easily. On the most significantly changed Deflection Board, the correction circuit to complement problems caused by the larger deflection angle of the CRT and the CRT properties has been added. In addition, the NS Correction Block, HRS, Focus, and H-Drive Blocks have been changed when compared with those of the K60A chassis. The Power Part is similar to that as for the K60A. STR and TRANS have been changed and the number of connector pins for connecting Ass'ys has been changed. Micom Block is the same as for the K60 except for a change in CPU control. Samsung Electronics 13-1

2 Speaker Circuit Description 13-2 Partial Block Description System Board Block Description Vixlim CRT IR/ KEY INPUT RF INPUT NIM TUNER (TDHU2) A33V/ 5V/ 3.3V/ 2.5V/ 1.2V SOUND_IF TUNER_CVBS S_YC S_Y AV1/ 2/ 3 VIDEO SW (TEA6425) A9V CVBS MONITOR_CVBS OUT COMP _1/ 2 VIDEO SW (CXA2171Q) D3.3V 4MHz X-TAL HDMI Iinput SIL19993 D3.3V SOUND_IF CAPTION_TTX TSD[7:0]/ CLK/VLD S_YC 3D COMB (UPD64084) A12V/A3.3V/2.5V M_YC 2171_Y/ Pb/ Pr 480i ONLY 2171_Y/ Pb/ Pr 480P OVER R/ G / B_24bit CLK/ H/ V HDMI_I2S(only PCM, not DD ) LR_1/2/3 MICOM (SDA555X) S3.3V/ 2.5V I2C_MICOM DTV_CVBS 20.25MHz X-TAL VIDEO ADC (VPC3230) D3.3V/ 1.8V SD_8bit CLK/ H/ V VIDEO ADC (MST9883A) D3.3V Y/ U/ V_24bit CLK/ H/ V FLASH MEM (28F640) S3.3V CPU (S3C2000X) S3.3V/ 1.8V PCI I/ F ETHERNET BOARD 2*30p S5V/ S3.3V SDRAM (K4S281632) D3.3V 6MHz X-TAL KHz X-TAL 33M CLK PCI IF PWM 33MHz VCXO 27MHz VCO TS IN SD IN I/ F PCI I/ F EAGLE + (S5H2020A) A3.3V/A1.8V CVBS_O 27M 74M CY24204 A3.3V SDRAM (K4S643232) D3.3V HD IN I/ F DTV_I2S_OUT Y/ PB/ PR OUT DIGITAL R/ G / B OUT SPDIFO AUDIO I2S IN AUDIO I2S OUT HD 24bit Y/ PB/ PR MCLK I2S_OUT Y/ PB/ PR/ H/ V DNIe-Lite (SP41) A3.3V/A1.8V AUDIO ADC (CS5333) A5V Y/ PB/ PR H/ V CRT DRIVER (CXA2165) A9V/A5V RGB AUDIO DAC (MSP4440) A5V/A8V MONITOR_LR SPK_LR MHz X-TAL Remocon Key input MST3385 EPROM (24C02) 5V RF/ DTV_SW, TU_RST, AFT, AGC EPROM (24C16) S3.3V EPROM (24C256) S3.3V EXPANDER (P-PCFM-012) S5V I2C KOR : 28F640 USA : 28F320 POD : 28F128 SVC_Rx/ Tx O RS232C SVC_Rx/ Tx (SP3232) ANY_Rx/ Tx O S3.3V I2C I2C_M5 CY244 ANY_Rx/ Tx Y/ PB/ PR/ H/ V I2S SWITCH (74HC244) A3.3V SEL_I2S MSP_I2S_IN AUDIO AMP (TDA7297) A16V SPK_LRO HIGH : EAGLE LOW : HDMI MICOM-D[0:6] 13-2 Samsung Electronics

3 TEA6425: RF-CVBS, AV, 480i, Y (Super) Switching and Monitor Out. VPC3230: 480i, CVBS, Y/C (SUPER) Input and Video Signal Processing. UPD64084: Separates the CVBS signal into Y and C, and performs the 3D-COM Filter function. CXA2171: Switches between Component 1 and 2. MST9883A: 480p, 720p, 1080i Signal ADC. S5H2020A : MPEG Decoder, Digital Audio Decoder. S3C2000X(CPU): Controls the overall operations of the System Board. MSP4440: Receives and decodes the SiF, analog audio and digital audio signals. SILI9993: HDMI Signal Receiver. This outputs the 24 bit R/G/B video signal and the digital audio signal in I2S format. TDHU2(Tuner): Receives 1 Input and transmits 8 bit TX data to EAGLE in case of DTV. Other: The Anynet function and the S/W update implemented through the Anynet port. An Optical output port implemented for digital audio output. The System Board, which handles all input and output signals, consists of Audio, Video, Micom and Deflection Blocks. External input consists of AV 1, 2, 3, 4 (3 and 4 are implemented using the same ports as for Component), S-VHS 1, 2, Component 1, 2 and the new HDMI port. The number of AV and S-VHS Inputs has been increased by implementing the SIDE AV input port as an additional input unlike for the existing model. AV, Y(Super), and CVBS inputs are multiplexed in TEA6425, separated into Y/C trough the 3D-COM Filter(UPD64084) and sent to the VPC3230 (Decoder). The signals are sent to the visual quality improvement chip SPD41 (DNIe Lite) via the MPEG decoder, S5H2020A. The signals are then sent to the Deflection IC, CXA2165. The final R/G/B signals are sent to the CRT Ass'y, amplified, and then displayed on the screen through the CRT. The DTV signal is output from the Tuner as an 8 bit digital signal and directly sent to the MPEG decoder, S5H2020A. The rest of the signal processing is the same as that for the analog signal. Especially as the digital audio signal is included in the 8 bit data, the decoder separates the audio signal and sends the digital data in I2S format to MSP4440 (Audio Processor). Monitoring output for DTV supports both video and audio. For audio output, there are both digital type SPDIF and analog type Lt/Rt interfaces. For external audio, input is supported by MSP4440 without additionally switching the IC. MUX IC, 74VHC244 has been used to enable selection of DTV and HDMI input. AMP has been implemented by the same circuit as that for the existing K60A. Output power has been decreased from 15W +15W to 10W +10W. The AUDIO Delay module has been implemented in the System Board unlike for K60A. The newly implemented HDMI interface for this K62A is an upgraded version of the DVI interface, which was implemented in the U.S. version of K60A. The HDMI interface supports digital audio unlike the DVI interface. HDMI supports the video formats of 480i, 480p, 720p and 1080i. For the detailed block diagrams of the blocks constructing the System Board, refer to the following descriptions. Samsung Electronics 13-3

4 Deflection Board Block Description Horizontal Drive + Vertical Drive CXA2165: CRT Driver IC. This transmits the signal for the CRT DRIVE to the Deflection Board. TDA6111Q: This amplifies the small R/G/B signals transmitted to the System Board and transmits the amplified signal to the electron gun of the CRT. The Deflection Block consists of the CRT Driver part of the System Board, the CRT Ass'y part and the Deflection Block that controls the overall deflection. CXA2165 is the final block that performs the R/G/B signal processing in the System Board and transmits the EW, H-Drive signal, which is important for deflection control, to the Deflection Block. The structure of the Deflection Board is similar as that for K60A. The HRS correction circuit for compensating for the properties of the CRT has been added and the existing Focus, NS Correction, and EW Block have been changed Samsung Electronics

5 Power Block AC Power Input Part Line Filter Block Rectification Block FeedBack Block Samsung Electronics 13-5

6 Circuit Description 13-3 New Circuit Description HDMI Block For Anti-Static Electricity Diode The HDMI Block consists of HDMI Receiver, Connector, Power Filter Block and Diode Block for signal protection from static electricity. The HDMI Block transmits digital video and audio signals, and automatically detects a cable connection. The HDMI Block supports signal processing for the 480i, 480p, 720p and 1080i video formats. The HDMI Block supports digital audio processing such as Dolby Digital and PCM Samsung Electronics

7 HDMI Power Block Power Block Diagram Power and Ground Pins Pin Name Pin# Type Description VCC 17,40,64,100 Power Digital VCC. Connect to 3.3V supply GND 16,41,65,99 Ground Digital GND. OVCC 21,47,56,67 Power Output Bus VCC. Connect to 3.3V supply OGND 28,45,57,66,78 Ground Output Bus GND PVCC1 80 Power Main PLL VCC. Connect to 3.3V supply PGND1 79 Ground Main PLL GND. PVCC2 23 Power Audio PLL VCC. Connect to 3.3V supply PGND2 22 Ground Audio PLL GND. AVCC 82,89,93,95 Power Analog VCC. Connect to 3.3V supply AGND 85,88,90,94,98 Ground Analog GND. DACVCCR 6 Power DAC Red VDD. Connect to 3.3V supply DACGNDR 5 Ground DAC Red GND. DACVCCG 11 Power DAC Green VDD. Connect to 3.3V supply DACGNDG 10 Ground DAC Green GND. DACVCCB 14 Power DAC Blue VDD. Connect to 3.3V supply DACGNDB 13 Ground DAC Blue GND. DACVCC 1 Power DAC VCC. Connect to 3.3V supply DACGND 2 Ground DAC GND. Samsung Electronics 13-7

8 13-4 IC Line Up System Board Items Descriptions Remarks Video Switch TEA6425, SGS-TOMSON 3D-COMB UPD64084, NEC 3 Dimension Y/C Separation LSI Analog Decoder VPC3230D, MICRONAS MPEG Decoder S5H2020X01, SAMSUNG CPU S3C2800X, SAMSUNG MICOM SDA5525C, Micronas Micro Controller DNIe Lite SPD41, SAMSUNG KOREA Only Component Decoder MST9883A, MST HDMI Receiver Sil9993, Silicon Image Digital Reciver for HDMI with HDCP Component Switch CXA2171Q, SONY Component S/W, H/V Sync S/W Tuner TDU2-004B, ALFS SOUND AMP TDA7297, SGS-TOMSON Deflection Processor CX2165, SONY DRAM K4S643232, SAMSUNG SDRAM K4S281632F, SAMSUNG FLRASH 28F640, IBM IC-LINE RANSCEIVER SP3232EC, Sipex EEPROM IC COMS LOGIC 74HC123, Philips Multi-Regulator SI-3006KWM 3.3V, 1.8V Multi Regulator Multi-Regulator SI-3003KWM 3.3V, 1.8V Multi Regulator Multi-Regulator SI-3002KWM 3.3V, 2.5V Multi Regulator Regulator GM G440, GAMMA 5V Regulator Regulator GM G338, GAMMA 2.5V Regulator Regulator 45AY 1.2V Regulator 13-8 Samsung Electronics

9 Power Board Items Descriptions Remarks BRIDGE DIODE GSIB660 STAND-BY VIPer12A Recitifation Diode SLA1004L Trans Switching 53B135-DH Trans Switching-ST BY EE2020 STR STR-X6759(USA) STR STR-X6750(KOREA) Deflection Board Items Descriptions Remarks Module - RF Splitter UMX-NT-017 FET FQP630 EW Driver KA393 Vertical DEF. LA7845 Horizontal DEF. FJ6920, FMP3FU Vertical Focus MC4558C H-Driver DDRI001A CRT Board DRIVE IC IC HYBRID AMP Items Descriptions Remarks TDA6111Q STK TDA2030 Samsung Electronics 13-9

10 MEMO Samsung Electronics