Z8622912SSG

Overview

The Z8622912SSG is a stand-alone Line 21 decoder manufactured by Zilog, designed for closed-captioning and Extended Data Services (XDS) compliance with EIA-608 specifications. It processes Vertical Blanking Interval data from both video fields to extract text and XDS packets such as time of day and program blocking information. The device features programmable on-screen display capabilities for full screen or Picture-in-Picture windows, user-adjustable horizontal positioning, and I2C serial control with two selectable addresses. It operates within a supply voltage range of 4.75V to 5.25V and supports an operating temperature range of 0°C to +70°C in a 18-SOIC package.

Feature Summary

• Complete stand-alone decoding for Line 21 Closed Captioning and Extended Data Services compliant with EIA-608 standards
• Programmable on-screen display generation supporting full screen text or Picture-in-Picture window integration
• Automatic extraction and serial output of specific XDS packets including time of day and local time zone data
• Dual-mode serial communication interface supporting both I2C and SPI protocols with selectable addressing

Applications

• Television sets requiring closed captioning and violence blocking functionality
• Set-top boxes utilizing Extended Data Services for program identification and scheduling
• Video cassette recorders implementing auto clock set features via XDS data extraction

Procurement Notes

Verify the component status and availability through authorized Zilog distributors or official channels before initiating procurement. Confirm that the 18-SOIC package variant matches the design requirements. Ensure all ordering suffixes align with the specific manufacturing lot and environmental compliance documentation provided by the supplier.

Selection Notes

Select this component when a dedicated hardware solution for NTSC Line 21 decoding is required without complex host processor intervention. Consider the integrated VCO and adaptive sync slicing for robust performance in varying signal conditions. Verify that the system design accommodates the necessary passive components for the loop filter and reference resistor settings specified in the datasheet.

Part Context

The Z8622912SSG belongs to the Z86229 series of video decoder integrated circuits produced by Zilog. This family focuses on providing cost-effective solutions for consumer electronics manufacturers needing reliable implementation of broadcast data services. The device integrates digital logic and analog processing blocks to handle composite video inputs efficiently.

Replacement Considerations

Consult official Zilog documentation for confirmed substitute part numbers. Cross-reference pin compatibility and electrical characteristics if considering alternative vendors. Verify that any replacement maintains support for the required EIA-608 specifications and I2C/SPI communication protocols.