Product category:
Microprocessors, Microcontrollers and DSPs
News Release from: Texas Instruments (April 2006-) | Subject: TMDS351 and TMDS251
Edited by the Electronicstalk Editorial
Team on 23 August 2007
Switches supply video to HDTVs
Each TMDS channel supports signaling rates up to 2.5Gbit/s to allow 1080p resolution in 12bit colour depth, making it compatible with the HDMI 1.3a standard.
Texas Instruments (TI) has released two new video switches for digital video interface (DVI) or high-definition multimedia interface (HDMI) The new devices connect either two or three digital video signals coming from devices such as game consoles, digital video switch boxes, set-top boxes or DVD players to a single HDTV display
This article was originally published on Electronicstalk on 4 Apr 2006 at 8.00am (UK)
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Both the TMDS351 three-port switch, and the TMDS25 two-port switch integrate four transition minimised differential signaling (TMDS) channels, one hot plug detector and a digital display control interface on each port.
Each TMDS channel supports signaling rates up to 2.5Gbit/s to allow 1080p resolution in 12bit colour depth, making it compatible with the HDMI 1.3a standard.
Switchable termination resistors (50ohm) are integrated at each TMDS receiver input, eliminating the need for external terminations.
Both devices share the same package and pinout, allowing customers to easily and quickly develop common platforms for 3 and 2 HDMI inputs.
The new HDMI/DVI switches provide selectable receiver equalisation to accommodate different input cable lengths, allowing longer cable reaches and improved opening of the data eye for better noise budgeting.
Each device provides strong electrostatic discharge (ESD) protection at the connector by featuring 8kV human body model (HBM) circuitry on the TMDS inputs.
These new switches support power saving operation.
When a system is in standby mode and there is no transmission of digital audio/visual content from a connected source, the 3.3V supply voltage can be powered off to minimise power consumption from the TMDS inputs, outputs and internal switching circuits.
The TMDS351 and TMDS251 devices join TI's offering of high-performance analogue and digital signal processor (DSP) products for video applications, including DaVinci processors optimised for digital video systems, the TVP7000/1 triple 8/10bit video ADCs, and DLP technology.
TI provides the silicon, software, systems expertise and support for customers' video designs, enabling them to accelerate market entry.
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