GS1532-CFE3

Video Processing Overview

The GS1532-CFE3 is a multi-rate serializer with an integrated cable driver, compliant with SMPTE 292M, SMPTE 259M-C, and DVB-ASI standards. It supports parallel digital input data buses of 20-bit or 10-bit width at clock frequencies of 148.5MHz, 74.25MHz, 27MHz, and 13.5MHz. The device features ClockCleaner™ technology for jitter tolerance exceeding 300ps on the input PCLK. Power supplies include 1.8V core, 3.3V charge pump, and 3.3V digital I/O. Serial output rates are 1.485Gb/s, 1.485/1.001Gb/s, or 270Mb/s.

Video Processing Feature Summary

• Performs NRZ to NRZI encoding and scrambling per SMPTE standards or DVB-ASI sync word insertion with 8b/10b encoding.
• Includes internal flywheel for noise-immune TRS generation and automatic video standard detection.
• Supports optional data processing functions such as CRC calculation, ANC checksum insertion, line number generation, and illegal code remapping.
• Features an integrated cable driver with adjustable signal swing, output mute on loss of parallel clock, and automatic dual slew rate selection.

Video Processing Applications

• SMPTE 292M Serial Digital Interfaces
• SMPTE 259M-C Serial Digital Interfaces
• DVB-ASI Serial Digital Interfaces

Video Processing Procurement Notes

Verify the specific suffix 'CFE3' against the manufacturer's current ordering information to confirm package type, temperature range, and RoHS compliance status. Ensure the component matches the Gennum/Semtech datasheet revision 21498. Confirm that the Pb-free encapsulation compound does not contain halogenated flame retardants as specified in the official documentation.

Video Processing Selection Notes

Select this component when designing transmit solutions for HD-SDI, SD-SDI, or DVB-ASI applications requiring multi-standard support. It is suitable for designs needing integrated jitter cleaning via the internal PLL with configurable loop bandwidth. Consider its compatibility with external VCOs like the GO1555 for complete transmission solutions. Evaluate the need for embedded ancillary data processing features before choosing over simpler serializers.

Video Processing Part Context

The GS1532 is part of the HD-LINX II family of serializers manufactured by Semtech Corporation (formerly Gennum). It is designed to work in conjunction with voltage-controlled oscillators like the GO1555 or GO1525. The device shares a small footprint compatible with other models in the series, including the GS1560A, GS1561, GS9060, and GS9062, facilitating modular design approaches in professional video equipment.

Video Processing Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult the manufacturer's obsolescence notices or cross-reference guides for equivalent components if this part is no longer in production.

Video Processing FAQ

How does the GS1532 handle jitter on the input parallel clock?

The device features an internal PLL with ClockCleaner™ technology that can tolerate in excess of 300ps of jitter on the input PCLK while providing output jitter well within SMPTE specifications.

What control signals determine the operating mode of the GS1532?

Operating modes are determined by the DVB_ASI, SD/HD, SMPTE_BYPASS, and 20bit/10bit control pins. For example, setting DVB_ASI HIGH configures the device for DVB-ASI mode, while SMPTE_BYPASS HIGH selects SMPTE mode.

Can the GS1532 generate ancillary data packets automatically?

Yes, when the IOPROC_EN/DIS pin is set HIGH, the device can enable features such as EDH packet generation, SMPTE 352M payload identifier packet insertion, ANC data checksum calculation, and line-based CRC generation.