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CS4954-CQ Scheda tecnica(PDF) 1 Page - Cirrus Logic |
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CS4954-CQ Scheda tecnica(HTML) 1 Page - Cirrus Logic |
1 / 56 page Preliminary Product Information This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice. 1 Copyright © Cirrus Logic, Inc. 1999 (All Rights Reserved) Cirrus Logic, Inc. P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.crystal.com CS4954 CS4955 NTSC/PAL Digital Video Encoder Features l Six DACs providing simultaneous composite, S-video, and RGB or Component YUV outputs l Programmable DAC output currents for low imped-ance (37.5 Ω) and high impedance (150 Ω) loads. l Multi-standard support for NTSC-M, NTSC- JAPAN, PAL (B, D, G, H, I, M, N, Combination N) l ITU R.BT656 input mode supporting EAV/SAV codes and CCIR601 Master/Slave input modes l Programmable HSYNC and VSYNC timing l Multistandard Teletext (Europe, NABTS, WST) support l VBI encoding support l Wide-Screen Signaling (WSS) support, EIA-J CPX1204 l NTSC closed caption encoder with interrupt l CS4955 supports Macrovision copy protection Version 7 l Host interface configurable for parallel or I2C compatible operation l On-chip voltage reference generator l +3.3 V or +5 V operation, CMOS, low-power modes, tri-state DACs Description The CS4954/5 provides full conversion from digital video formats YCbCr or YUV into NTSC and PAL Composite, Y/C (S-video) and RGB, or YUV analog video. Input for- mats can be 27 MHz 8-bit YUV, 8-bit YCbCr, or ITU R.BT656 with support for EAV/SAV codes. Video output can be formatted to be compatible with NTSC-M, NTSC- J, PAL-B,D,G,H,I,M,N, and Combination N systems. Closed Caption is supported in NTSC. Teletext is sup- ported for NTSC and PAL. Six 10-bit DACs provide two channels for an S-Video output port, one or two composite video outputs, and three RGB or YUV outputs. Two-times oversampling re- duces the output filter requirements and guarantees no DAC-related modulation components within the speci- fied bandwidth of any of the supported video standards. Parallel or high-speed I2C compatible control interfaces are provided for flexibility in system design. The parallel interface doubles as a general purpose I/O port when the CS4954/5 is in I2C mode to help conserve valuable board area. ORDERING INFORMATION CS4954-CQ 48-pin TQFP CS4955-CQ 48-pin TQFP APR ‘99 DS278PP4 CLK ISET DGND SCL SDA PDAT[7:0] RD WR ADDR XTAL_OUT VD[7:0] HSYNC VSYNC FIELD INT RESET I2C Interface Host Parallel Interface Color Sub-carrier Synthesizer 8 Video Formatter Control Registers Chroma Modulate Chroma Amplifier Output Interpolate LPF Burst Insert Chroma Interpolate LPF Luma Interpolate Luma Amplifier Sync Insert U,V Y Video Timing Generator TEST Current Reference Voltage Reference VREF R DAC Y DAC CVBS DAC C 10-Bit DAC Σ VAA XTAL_IN Teletext Encoder TTXRQ TTXDAT YCbCr to RBG B DAC G DAC 10-Bit 10-Bit 10-Bit 10-Bit 10-Bit RGB RGB Y Y 8 Color Space Converter |
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