SI21642-C60-GM

Video Processing Overview

The Si21642-C60-GM is a dual digital TV demodulator integrating two high-performance receivers for DVB-T2/T, DVB-C2/C, and DVB-S2/S/S2X standards into a single compact package. It leverages Skyworks' proven architecture to minimize front-end design complexity, cost, and power dissipation. The device supports standard IF or low-IF inputs for terrestrial/cable and zero-IF interfaces for satellite tuners. It features on-chip blind scanning, independent programmable transport stream interfaces, and firmware upgradeability via SPI or I2C.

Video Processing Feature Summary

• Pin-to-pin and API compatible with the broader Si216x2 and Si218x2 dual demodulator families
• Supports comprehensive DVB standards including T2-Lite, C2, S2X, and legacy DSS/Directv formats
• Integrates dual DiSEqC 2.x interfaces and equalizers for long cable feed compensation
• Offers flexible transport stream outputs with cross-bar functionality and GPIO support

Video Processing Applications

• Multi-receiver integrated digital televisions (iDTV) in onboard or NIM configurations
• Advanced multimedia personal video recorder (PVR) set-top boxes
• PC-TV accessories and hybrid receiver solutions
• PVR, DVD, and Blu-Ray disc recorders requiring multi-standard reception

Video Processing Procurement Notes

Verify specific ordering suffixes such as -GM/R against official Skyworks documentation to ensure correct packaging and compliance status. Confirm that the selected variant matches the required pin assignment and thermal specifications for your PCB layout. Always reference the latest datasheet for any updates to electrical characteristics or supported firmware patches.

Video Processing Selection Notes

Select this component when a single chip solution is needed to handle both terrestrial/cable and satellite signals simultaneously. Ensure the host system can accommodate the required 1.2V and 3.3V power supplies. Verify that the application benefits from the device's blind scanning algorithms and fast lock times across all supported modulation schemes.

Video Processing Part Context

This part belongs to Skyworks' Si21642 family of dual universal demodulators. It serves as a direct replacement or upgrade path for previous generation single-demodulator chips like the Si2164/67/68/69 series by consolidating functionality. The device is designed to reduce bill-of-materials costs and board space in modern television front-end designs.

Video Processing Replacement Considerations

Officially pin-to-pin compatible with other Si216x2 and Si218x2 family members. Verify API compatibility if migrating between different sub-families within the dual demodulator line. Ensure that any substitute part supports the same specific standards, such as DVB-S2X or T2-Lite, required by the target application.

Video Processing FAQ

What input interfaces does the Si21642-C60 support for terrestrial and satellite tuners?

It accepts a standard IF (36 MHz) or low-IF differential input for terrestrial/cable tuners, and provides differential zero-IF I/Q inputs for seamless connection to satellite silicon tuners.

Does the device support blind scanning for channel acquisition?

Yes, it offers an on-chip blind scanning algorithm for DVB-S/S2/S2X and DVB-C standards, along with a blind lock function to simplify user experience.

Firmware can be upgraded via patch download using either the fast SPI interface or the I2C bus, with support for broadcast mode updates.