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Z86129/130/131

1

FEATURES

s

Complete Stand-Alone Line 21 Decoder for Closed-

Captions and Extended Data Services (XDS).

s

Preprogrammed to Provide Full Compliance with EIA-

608 Specifications for Extended Data Services.

s

Automatic Extraction and Serial Output of Special XDS

Packets such as Time of Day, Local Time Zone, and

Program Rating (V-Chip).

s

Cost-Effective Solution for NTSC Violence Blocking

inside Picture-in-Picture (PiP) Windows.

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Minimal

Communications

and

Control

Overhead

Provides Simple Implementation of Violence Block,

Closed Caption, and Auto Clock Set Features.

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Programmable, Full Screen On-Screen Display (OSD)

for Creating OSD or Captions inside a Picture-in-Picture

(PiP) Window (Z86129 only).

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I

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User-Programmable Horizontal Display Position for

easy OSD Centering and Adjustment (Z86129 only).

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 ad-

ditional data channels, two Captions, two Text and Extend-

ed Data Services (XDS). XDS data structure is defined in

EIA-608. The Z86129 can recover and display data trans-

mitted on any of these nine data channels. The Z86130

and Z86131 are derivatives of the Z86129 which can re-

cover XDS data and output the recovered data via the se-

rial 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 pro-

cessor via the I

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 im-

plementing NTSC Violence Block. The Z86131 is designed

especially for extracting XDS time information for Automat-

ic 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.

Speed

Pin Count/

Standard

On-Screen Display

Automatic Data Extraction

Devices

(MHz)

Package Types

Temp. Range

& Closed Captioning

V-Chip

Time of Day

Z86129

12

18-Pin DIP, SOIC

0

° to +70°C

Yes

Yes

Yes

Z86130

12

18-Pin DIP, SOIC

0

° to +70°C

No

Yes

Yes

Z86131

12

18-Pin DIP, SOIC

0

° to +70°CNo

No

Yes