1 Z86129/130/131 1 NTSC LINE 21 DECODER FEATURES Devices Speed (MHz) Pin Count/ Package Types Standard Temp. Range On-Screen Display & Closed Captioning Z86129 Z86130 Z86131 12 12 12 18-Pin DIP, SOIC 18-Pin DIP, SOIC 18-Pin DIP, SOIC 0° to +70°C 0° to +70°C 0° to +70°C Yes No No ■ Complete Stand-Alone Line 21 Decoder for ClosedCaptions and Extended Data Services (XDS). ■ ■ ■ Automatic Data Extraction V-Chip Time of Day Yes Yes No Yes Yes Yes ■ Minimal Communications and Control Overhead Provides Simple Implementation of Violence Block, Closed Caption, and Auto Clock Set Features. Preprogrammed to Provide Full Compliance with EIA608 Specifications for Extended Data Services. ■ Automatic Extraction and Serial Output of Special XDS Packets such as Time of Day, Local Time Zone, and Program Rating (V-Chip). Programmable, Full Screen On-Screen Display (OSD) for Creating OSD or Captions inside a Picture-in-Picture (PiP) Window (Z86129 only). ■ I2C Serial Data and Control Communication ■ User-Programmable Horizontal Display Position for easy OSD Centering and Adjustment (Z86129 only). Cost-Effective Solution for NTSC Violence Blocking inside Picture-in-Picture (PiP) Windows. GENERAL DESCRIPTION The Z86129/130/131 is a stand-alone integrated circuit, capable of processing Vertical Blanking Interval (VBI) data from both fields of the video frame in data conforming 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 has four data channels, two Captions and two Text. Field 2 has five additional data channels, two Captions, two Text and Extended Data Services (XDS). XDS data structure is defined in EIA-608. The Z86129 can recover and display data transmitted on any of these nine data channels. The Z86130 and Z86131 are derivatives of the Z86129 which can recover XDS data and output the recovered data via the serial port. The Z86130 and Z86131 do not have OSD capa- bility, but are ideally suited for Line 21 data slicer applications. The Z86129/130/131 can recover and output to a host processor via the I2C serial bus any XDS data packet defined in EIA-608. On-chip XDS filters are fully programmable, enabling recovery of only those XDS data packets selected by the user, making the Z86129/130 an ideal choice for implementing NTSC Violence Block. The Z86131 is designed especially for extracting XDS time information for Automatic Clock-Set features in TVs, VCRs, and Set-Top boxes. In addition, the Z86129/130 is ideally suited to monitor Line 21 of video displayed in a PiP window for violence blocking purposes. A block diagram of the Z86129/130/131 is shown in Figure 1. 217 Figure 1. Z86129 Block Diagram CSYNC 8 7 Dual Clamp HIN 5 FR PH2 PH1 CG Logic CG Lines Slice Level MSYNC Video SYNC Slicer LPF I Drive & MUX O/S 9 SIG PG Lock Buffer COMP SYNC Loop Filter Control OSC Data Slicer AW Vss 1 Line & Fld Decodes Line & Field Control CHAR CIR Vss(A) 11 FLD LS SFLD SLS MSGR CW 13 DOT CLK DIV CHAR CLK DOT CLK Digital II Lock Data Bus Data Line FEW Data CLK Recovery V Lock Sliced Data VDD VIN/ Intro VW 12 6 4 15 14 16 RREF 10 V/I Ref FLD 6 4 POR CKT SS CTR 4 Display 8 Latch Row Latch Test Reg Status Reg Serial Control Port SMS SEN SCK SDA SDO 218 13 10 Output Logic Character Generator Display RAM Address MUX Command Processor Row Z86129 only 17 3 2 18 BOX BLUE GREEN RED +5V Addr Bus ADDR Decoder ADDR DEC Z86129/130/131 NTSC Line 21 Decoder GENERAL DESCRIPTION (Continued)