Video Sideport Video Decoders Sideport Video Decoder CX25836/7 High Performance in a Small Package Conexant’s broadband communications portfolio includes a comprehensive suite of semiconductor solutions that enable the digital home and information network. The CX25836/7 is Conexant’s fourth-generation video decoding solution. It provides a highly integrated single-chip analog video capture solution ideal for a wide range of digital video systems applications. The CX25836/7 features, although applicable to a wide range of analog video applications, are focused on both the security and consumer electronics markets. Most notably, CX25836’s fast camera locking capabilities and flexible programmable inputs make it most suitable for the security camera market. The CX25837, with its ability to decode Composite Video Baseband Signal (CVBS), S-Video, and YPbPr, is best suited to address the wide array of consumer electronics requirements. Both devices are distinguished by high quality, flexibility, integration, and ease of use. Both fit into a wide array of applications: set-top-boxes, flat panel displays (such as LCD and Plasma TVs), HDTVs, and PVRs/DVRs. High Quality The CX25836/7 integrates two high-performance 10-bit ADCs and provides a full 10-bit data path through the video decoder to maintain optimum end-toend video quality. Eight video inputs provide flexible analog muxing that can be configured for any of the following: • Eight CVBS inputs • Four Y/C inputs • Three composite with one Y/C and one YPbPr • One composite with two Y/C and one YPbPr • Two composite with two YPbPr (CX25837 only) The CX25837 uses its high quality Analog-to-Digital Converter (ADC) to sample the YPbPr video format, which is most often found on prosumer (intermediate to advanced end user) type equipment. Simultaneous Distinguishing Features • Integrated NTSC/PAL/SECAM video decoding • Auto detection and configuration for video • Two 10 bit A/D • YPbPr component video input • Ease of Use • 12mm X 12mm 80-pin TQFP • 7mm X 7mm 64-pin TQFP • CCIR 656/601/VIP • Integrated anti-alias filter • On-chip voltage regulator digitization of Pb and Pr, through the 10-bit chrominance A/D, is used to offer this feature cost effectively yet yield the highest quality. Part Number CX25836/7 Description Sideport Video Decoder Video Sideport Video Decoders Integrated Filters Flexible Architecture All video inputs have integrated anti-alias filters, eliminating the With eight programmable input ports and a configurable output need for external filter components. These filters help improve the port for 4:2:2 digital, the CX25836/7 can be used to capture video decoding process by removing aliasing artifacts prior to the video from TV tuners, DVD players, video cameras, VCRs, game digitization process. consoles, or any other sources of composite Y/C or component (480i) video. The CX25836/7 video inputs can be programmed Conexant also employs a proprietary method of luma/chroma for up to eight video sources; a maximum of eight CVBS input separation of the composite video sources. Conceptually similar channels. Each of these inputs can be used to support CVBS, to a 4H adaptive chrominance comb filter used for NTSC and S-Video, or component video inputs. The total number and PAL, Conexant performs a slight twist to provide unparalleled configuration of video inputs is user-defined. performance. Through the use of adaptive correlation logic, the resulting combed image provides improved performance over Ease of Use a standard 4H comb solution. In the case where no correlation The CX25836/7 requires minimal programming for startup. These exists between lines, the decoder automatically falls back to the devices are preconfigured in a default mode for development, chrominance band-pass and luma notch filter. verification, and fast prototyping. Additionally, the CX25836/7 can auto detect all worldwide broadcast video standards. In the case of SECAM, a bell filter is implemented. The net effect of the various filtering stages results in a high-quality image with Internally, the CX25836/7 uses on-chip logic to determine reduced cross-chrominance and cross-luminance artifacts (such which video standard is present and reconfigures automatically as dot crawl, hanging dots, rainbow effects) and thus restores full so no user intervention is necessary. This is especially useful bandwidth to luminance data from composite sources. in geographic regions where different video standards may be received on a channel-by-channel basis. However, like the operation of traditional video decoders where the user chooses a specific video standard, the automatic detection feature may be turned off. XTI XTO Master Clock Input PIXCLK VBI Data Slicer and Decoder CVBS2/Y2 CVBS3/Y3 CVBS4/Y4/SIF1/Pb CVBS5/C1/SIF2/Pb CVBS6/C2/SIF3/Pb CVBS7/C3/SIF4/Pr CVBS8/C4/SIF5/Pr Input MUX, Anti-alias Filter and AGC CVBS1/Y1 10-Bit CVBS/ LUMA ADC 10-Bit Chroma/ Sound IF ADC Video Decoder NTSC, PAL, SECAM with 4H Adaptive Comb Filter Arbitrary Horizontal and Vertical Multi-tap Polyphase Scaler CX25836/7 System Block Diagram Video Output Port: BT.656, BT.601, VIP 2.0 I/O Pin MUX 2-Wire Serial Command or VIP Host I/F Audio Over Sample or Generic Clock VID_DATA[7:0] VRESET/PRGM3 HRESET/PRGM2 FIELD/PRGM1 DVALID/PRGM0 IR_RX/PRGM5 IR_TX/PRGM6 SER_CLK/HAD[0] SER_DATA/HAD[1] CHIP_SEL/VIPCLK HCTL/PRGM3 IRQ_N/PRGM4 PLL_CLK/PRGM7 Superior Performance Moreover, the surrounding Bill of Materials (BOM) has been The CX25836/7 high quality video decoder offers superior integrated and optimized for performance and overall cost performance through advances in technology, integration, effectiveness. Together, small package and integration yield and patented intellectual property. high performance in a small package. To maximize the customer’s flexibility and minimize the board space by eliminating multiple For example, a new and improved arbitrary horizontal and foot print options, the CX25837 is also offered in an 80-pin vertical scaler, from full resolution down to an 8:1 ratio (icon 12x12 mm device, which is pin-for-pin compatible with the size), has been implemented using a polyphase interpolation CX25840/1/2/3 broadcast A/V decoder. Broadcast audio can be filter. This maintains a high-quality scaled image that preserves added by a mere device change. Finally, the CX25836/7 has multiple the detail and aspect ratio of the source material. Scaling can be power-down modes to address low-power applications and power accomplished in both ITU-R BT.656 and square formats. budget-sensitive designs. The video decoder is designed on the latest sub-micron process, which reduces the overall power Additionally, new advances in clamping, Automatic Gain Control consumption through the advantages of reduced geometries. (AGC), and DC restore circuitry allow for faster lock times upon channel change and improved signal reconstruction abilities to improve the video decode process. The CX25836/7 is offered in a compact 64-pin 7x7 mm TQFP and operates off of a single 3.3 V regulator. Part Ordering Numbers 6 Video Input Mux Part Number 8 Video Input Mux Component Video Input VIP Host Port X X X CX25836 CX25837 VSS_CH2 CVBS8/C4/SIF5/Pr2 VAA_CH2 CVBS7/C3/SIF4/Pr1 S2D_NEG2 CVBS6/C2/SIF3 IREF CVBS5/C1/SIF2/Pb2 VSS_CH1 CVBS4/Y4/SIF1/Pb1 VAA_CH1 CVBS3/Y3 60 59 58 57 56 55 54 53 52 51 50 49 NC NC NC NC VAA_XTAL XTO XTI VSS_XTAL VSS_CH2 CVBS8/C4SIF5/Pr2 VAA_CH2 CVBS8/C3/SIF4/Pr1 S2D_NEG2 CVBS6/C2/SIF3 IREF CVBS5/C1/SIF2/Pb2 VSS_CH1 CVBS4/Y4/SIF1/Pb1 VAA_CH1 CVBS3/Y3 VSS_XTAL 61 48 CVBS2/Y2 2 47 S2D_NEG1 SLEEP 3 46 CVBS1/Y1 IR_TX/PRGM6 4 45 ASUB IR_RX/PRGM5 5 44 VAA_ADC1 IRQ_N/PRGM4 6 43 VSS_ADC1 VDDO 7 42 VSS_ADC2 VSSO 8 41 VAA_ADC2 VSS 9 40 REG_OUT 64-pin TQfp 7 x 7 x 1 mm body size 0.4 mm pin pitch 26 27 28 29 30 31 32 VDD VID_DATA[3] VID_DATA[2] VID_DATA[1] VID_DATA[0] PIXCLK VSS0_PLL VSS 33 25 16 VSSO PLL_CLK/PRGM7 VDD 24 34 VDDO 15 23 VDDO_PLL VSS VID_DATA[4] 35 22 14 VID_DATA[5] VPP1 VRESET/HCTL/PRGM3 21 36 VID_DATA[6] 13 20 VPP0 CHIP_SEL/VIPCLK VID_DATA[7] 37 19 12 DVALID/PRGM0 VSS_PLL SER_CLK/HAD[0] 18 REG_IN 38 17 39 11 FILD/PRGM1 10 HRESET/PRGM2 VDD SER_DATA/HAD[1] CX25837 and CX25836 Pinout (64-Pin) TEST RESET_N SLEEP NC NC NC NC IR_TX/PRGM6 IR_RX/PRGM5 IRQ_N/PRGM4 VDDO VSSO VSS VDD SER_DATA/HAD[1] SER_CLK/HAD[0] CHIP_SEL/VIPCLK VRESET/HCTL/PRGM3 VSS VDD 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 XTI 62 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 80-pin TQfp 12 x 12 x 1 mm body size 0.5 mm pin pitch 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 XTO 63 TEST RESET_N HRESET/PRGM2 FIELD/PGRM1 DVALID/PRGM0 VID_DATA[7] VID_DATA[6] VID_DATA[5] VID_DATA[4] VDDO VSSO VSS VDD VID_DATA[3] VID_DATA[2] VID_DATA[1] VID_DATA[0] PIXCLK NC NC NC NC VAA_XTAL 64 X CX25837 Pinout (80-Pin) CVBS2/Y2 S2D_NEG1 CVBS1/Y1 ASUB VAA_ADC1 VSS_ADC1 VSS_ADC2 VAA_ADC2 REG_OUT REF_IN VSS_PLL VPP0 VPP1 VDDO_PLL PLL_CLK/PRGM7 VSSO_PLL NC NC NC NC Video Sideport Video Decoders CX25836/7 Features • Auto detection and configuration • • • • • • • • • • • of NTSC/PAL/SECAM video Worldwide video standards – NTSC (M, J, 4.43), PAL (B, D, G, H, I, M, N, Nc), SECAM (K, L) Full 10-Bit ADCs and data path Flexible video input mux with integrated anti-alias filtering Four line adaptive comb filter for NTSC and PAL Flexible video output port - 27 MHz ITU-R BT.656, VIP 2, or ITU-R BT.601 video with separate syncs Macrovision detection Programmable VBI data slicer for data services such as closed caption, Teletext, and program guides Power-up configurable two wire serial command interface or two wire VIP 1.1/2 host port interface Hardware interrupt to eliminate polling Auto detection and configuration for video Fast locking mode for security camera applications (CX25836) CVBS Video Decoder CX25836/7 Camcorder CCIR 656 • Auxiliary clock output – For providing an oversampled audio clock locked to the video or for use as a general purpose PLL output • Infrared transmit and receive logic • Internal voltage regulation for single supply operation • Lower power consumption • Small form factor • Pin for pin compatible devices Video Decoder Applications • Set-top-boxes • Flat panel displays – LCD and Plasma TVs • HDTVs • PVRs/DVRs/VCRs • TV tuners • DVD players • Video cameras MPEG CODEC CCIR 656 Audio Clk L, R Stereo Decoder DVD Burner CX25836/7 Diagram © 2003, Conexant Systems, Inc. All Rights Reserved. Conexant and the Conexant logo are registered trademarks of Conexant Systems, Inc. All other trademarks are owned by their respective owners. Although Conexant strives for accuracy in all its publications, this material may contain errors or omissions and is subject to change without notice. This material is provided AS IS and without any express or implied warranties, including merchantability, fitness for a particular purpose and non-infringement. Conexant shall not be liable for any special, indirect, incidental or consequential damages as a result of its use. 03-0887 www.conexant.com General Information: U.S. and Canada: (888) 855-4562 International: (732) 345-7500 Headquarters 4000 MacArthur Blvd. Newport Beach, CA 92660 Order# 102226A Video Encoder CVBS Television