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Z8622912PSC Datasheet(PDF) 1 Page - Zilog, Inc. |
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Z8622912PSC Datasheet(HTML) 1 Page - Zilog, Inc. |
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1 / 52 page  # 4'.+/+0#4; 41&7%6 #2'%+(+%#6+10 < 065% .+0' %%& &'%1&'4 ('#674'5 • Complete Stand-Alone Line 21 Decoder for Closed- Captioned and Extended Data Services (XDS) • Preprogrammed to Provide Full Compliance with EIA–608 Specifications for Extended Data Services • Automatic Extraction and Serial Output of Special XDS Packets (Time of Day, Local Time Zone, and Program Blocking) • Programmable XDS Filter for a Specific XDS Packet • Cost-Effective Solution for NTSC Violence Blocking inside Picture-in-Picture (PiP) Windows • Minimal Communications and Control Overhead Pro- vide Simple Implementation of Violence Blocking, Closed Captioning, and Auto Clock Set Features • Programmable, On-Screen Display (OSD) for Creat- ing Full Screen OSD or Captions inside a Picture-in- Picture (PiP) Window • User-Programmable Horizontal Display Position for easy OSD Centering and Adjustment • I2C Serial Data and Control Communication • Supports 2 Selectable I 2C Addresses )'0'4#. &'5%4+26+10 Capable of processing Vertical Blanking Interval (VBI) data from both fields of the video frame in data, the Z86229 Line 21 Decoder offers a feature-rich solution for any tele- vision or set-top application. The robust nature of the Z86229 helps the device conform to the transmission format defined in the Television Decoder Circuits Act of 1990, and in accordance with the Electronics Industry Association specification 608 (EIA–608). The Line 21 data stream can consist of data from several data channels multiplexed together. Field 1 consists of four data channels: two Captions and two Texts. Field 2 consists of five additional data channels: two Captions, two Texts, and Extended Data Services (XDS). The XDS data structure is defined in EIA–608. The Z86229 can recover and display data transmitted on any of these nine data channels. The Z86229 can recover and output to a host processor via the I2C serial bus. The recovered XDS data packet is further defined in the EIA–608 specification. The on-chip XDS fil- ters in the Z86229 are fully programmable, enabling recov- ery of only those XDS data packets selected by the user. This functionality allows the device to extract the required XDS information with proper XDS filter setup for compatibility in a variety of TVs, VCRs, and Set-Top boxes. In addition, the Z86229 is ideally suited to monitor Line 21 video displayed in a PiP window for violence blocking, CCD, and other XDS data services. A block diagram of the Z86229 is illustrated in Figure 1. #WVQOCVKE&CVC 'ZVTCEVKQP &GXKEGU 5RGGF /*\ 2KP %QWPV 2CEMCIG6[RGU 5VCPFCTF 6GOR 4CPIG 1P 5ETGGP &KURNC[ %NQUGF %CRVKQPKPI 2TQITCO 4CVKPI 6KOGQH&C[ < 2KP &+2 51+% % VQ % ;GU ;GU ;GU |
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