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Chips to bridge LVDS to LCD panel transition

Parade Technologies Ltd. has announced the availability two new devices that claim to help manufacturers bridge the transition from LVDS to DisplayPort interfaces in notebook and all-in-one computers. The PS8615 converts single or dual link DisplayPort inputs into single or dual link LVDS outputs, supporting display resolutions up to 1920x1200 at 60Hz. The new PS8612 converts a single lane DisplayPort signal to LVDS, which supports display resolutions up to 1680x1050 at 60Hz. Both devices require a single 3.3V supply. The devices incorporate an on-chip voltage-switching regulator to power 1.2V core circuitry, claiming to eliminate the need for external regulators and minimise power consumption. Power consumption is less than 200mW in typical applications. Both devices also incorporate the company’s crystal-free technology, claiming to eliminate the need for an external crystal or clock reference. Both devices are compatible with VESA DisplayPort specification 1.1a, and the newly released Embedded DisplayPort specification version 1.2. They support DisplayPort link rates up to 2.7Gbit/s and LVDS clock rates up to 135MHz. The devices support DisplayPort or eDP (Embedded DisplayPort) with no-link training, fast-link training and full-link training.Adopting eDP v1.2 backlight control into a DisplayPort-to-LVDS converter allows the devices to directly generate the backlight control pulse width modulated signal under control of the GPU, using the eDP v1.2 AUX channel control commands. This simplifies interconnect between the GPU and video interface. The devices are sampling now, and production volumes will be available during the first quarter of 2011. The PS8612 is available in a 48pin QFN RoHS packagewhile the PS8615 is available in a 56pin QFN RoHS package.