Latest video transport ICs from Gennum boost performance and cut power consumption

2005-12-08

Download datasheet GS1531 (pdf) Download datasheet GS1559 (pdf) Download datasheet GS1574A (pdf) Download datasheet GS1578A (pdf)

Building on its market-leading position in semiconductors for video transport systems, Gennum’s latest integrated circuits feature higher performance, reduced power consumption and greater functional integration for HD-SDI, SD-SDI and DVB-ASI applications. The HD Linx II family has been expanded to include the GS1531 multi-standard serialiser with integrated cable driver, the GS1559 re-clocking deserialiser with a serial loop-through cable driver, the GS1574A adaptive cable equaliser and the GS1578A multi-rate, dual slew-rate cable driver.

The GS1531 is a feature-rich serialiser that offers SMPTE 292M and SMPTE 259M-C compliant scrambling and NRZ to NRZI encoding (with bypass). It also offers DVB-ASI sync word insertion and 8b/10b encoding. User-selectable processing features include CRC, ANC data checksum, line number calculation and insertion, TRS and EDH packet generation and insertion, and illegal code remapping. The complementary GS1559 deserialiser incorporates two serial digital input buffers with a 2 x 1 multiplexer to allow the device to select from one of two serial digital input signals. The integral re-clocker has wide input jitter tolerance of ±0.3UI, a rapid asynchronous lock time and is fully compliant with DVB-ASI data streams. It features automatic standards detection and all processing functions can be individually enabled or disabled via a host interface control. The GS1559 also has an in-built cable driver.

Completing the family of products, the GS1574A is a second-generation high-speed bipolar IC for equalising and restoring signals received over 75 Ohm coaxial cable and is optimised for performance at 270Mb/s and 1.485Gb/s. The GS1578A is a driver for one or two 75 Ohm coaxial cables and is capable of handling signals up to 1.485Gb/s.

All the devices are supplied in lead-free packages. The serialiser and deserialiser require 1.8V and 3.3V supplies, the equaliser and driver operate from a single 3.3V supply.