The HMP8156EVAL2 Video Evaluation Platform (HMP8156EVAL2) TM Application Note March 1997 AN9721 Author: Steven M. Martin Features Description • HMP8156 video encoder The HMP8156EVAL2 Video Evaluation Platform is a PC ISA Bus add-in card designed to demonstrate the capabilities and performance of the HMP8156 NTSC/PAL Encoder and the HMP8112 NTSC/PAL Decoder. • HMP8112/8112A video decoder • Analog input formats - Composite (up to four inputs) - Y/C (S-Video) - Analog RGB with sync • Digital parallel BT.656 input • Analog output formats - Y/C + two composite - RGB + composite (SCART) • NTSC and PAL operation • ITU-R BT.601 and square pixel operation • Three Megabyte video RAM on board • Programmable sync generator • Analog sync separator • User selectable hue, saturation, contrast and brightness controls • Closed captioning insertion • Windows95™ application program Applications • Video image capture and display • Real time standards conversion The board has three input data paths: analog composite via the HMP8112 analog component RGB via a Intersil A/D design, and digital BT.656. For all three input paths, the board outputs analog video via the HMP8156. The board can output one composite video signal and either S-Video and a second composite signal, or component RGB video. The board accepts analog composite or S-video in NTSC or PAL format. The decoder converts the analog signal into digital data and stores it in the three megabyte video frame buffer. The encoder reads the data from the video RAM and generates analog video in NTSC or PAL format. The encoder generates its own timing information, or it may be driven by the on board programmable sync generator. The input and output formats may be different, eg: NTSC input and PAL output. The board accepts analog RGB video with composite sync. Three high-performance ADCs convert the analog signals to digital data and drive the encoder. A sync separator derives timing information for the encoder from the input. The encoder converts the digital data and timing information into analog video in the same format as the input video. The board accepts a digital parallel BT.656 data stream. Translators convert the ECL input to TTL levels and drive the encoder. The encoder converts the data and its embedded timing information into analog video. The user interface to the evaluation platform is an easy to use Windows95 application program. The application provides host control to program the board. It provides user access to all of the decoder and encoder operating parameters and also allows the user to load (store) video images in the video RAM from (to) the PC file system. • Live color editing 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2001. All Rights Reserved Application Note 9721 Functional Block Diagram PIXEL DATA SOURCES COMP/ LUMA HMP8112 DECODER VRAM 1 MEG X 24 FIFO CHROMA 16 SERIAL SHIFT PORT RANDOM ACCESS PORT PC TO BOARD INTERFACE ISA BUS 24 I2C, TTX2, RESET BOARD CONTROL BT.656 ECL TO TTL RGB 8 ADC 3 24 24 / 16 SELECT MISC I/O DATA HMP8156 ENCODER SYNC SEPARATOR ANALOG OUTPUTS 2 BOARD SYNC GENERATOR SYNCS SYNC SOURCES BT.656 CLOCK CLOCKS CRYSTAL OSCILLATOR SMA CONN CLOCK SOURCES 2 CONTROL FOR VRAM AND MISC. 4 Application Note 9721 Flywire Physical Interface TOP, COMPONENT SIDE 1 3 2 TOP VIEW 50 POSITION HEADER, 0.025 INCH SQUARE POSTS, 0.100 INCH SPACING 49 50 CONNECTOR PINOUTS SIGNAL PIN SIGNAL PIN SIGNAL PIN VCC 1 PIX<12> 18 PIX<1> 35 GND 2 PIX<11> 19 PIX<0> 36 N/C 3 PIX<10> 20 VCC 37 N/C 4 PIX<9> 21 GND 38 PIX<23> 5 PIX<8> 22 FIELD_ENC 39 PIX<22> 6 -VSYNC_ENC 23 -BLANK_ENC 40 PIX<21> 7 GND 24 N/C 41 PIX<20> 8 VCC 25 N/C 42 PIX<19> 9 VCC 26 SCLK 43 PIX<18> 10 GND 27 SDATA 44 PIX<17> 11 -HSYNC_ENC 28 N/C 45 PIX<16> 12 PIX<7> 29 -RESET_A 46 GND 13 PIX<6> 30 PIXCLK_RDH 47 VCC 14 PIX<5> 31 VIDCLK 48 PIX<15> 15 PIX<4> 32 GND 49 PIX<14> 16 PIX<3> 33 VCC 50 PIX<13> 17 PIX<2> 34 All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 3