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TMDS341 Datasheet(PDF) 1 Page - Texas Instruments |
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TMDS341 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 25 page  www.ti.com FEATURES APPLICATIONS DESCRIPTION TYPICAL APPLICATION PC TMDS 341 DVD Player STB Digital TV or Game Machine TMDS341 SLLS660A – AUGUST 2005 – REVISED OCTOBER 2005 3-TO-1 DVI/HDMI SWITCH • HBM ESD Protection Exceeds 3 kV • Designed for Signaling Rates up to 1.65 Gbps • 3.3-V Supply Operation in Support of UXGA Display • 80-Pin TQFP Package • Differential Interface Compatible with • ROHS Compatible and 260 °C Reflow Rated Transition Minimized Differential Signaling (TMDS) Electrical Specification • Each Port Supports HDMI or DVI Inputs • Switching From Three Digital-Video (DVI) or Digital-Audio Visual (HDMI) Sources • Isolated Digital Display Control (DDC) Bus for • Digital TV Unused Ports • Digital Projector • 5-V Tolerance to all DDC and HPD_SINK • Audio Video Receiver Inputs • Integrated Receiver Termination • Inter-Pair Output Skew < 100 ps • 8-dB Receiver Equalization to Compensate for 5-m DVI Cable Losses • High Impedance Outputs When Disabled The TMDS341 is a 3-port digital video interface (DVI) or high-definition multimedia interface (HDMI) switch that allows up to 3 DVI or HDMI ports to be switched to a single display terminal. Four TMDS channels, one hot plug detector, and an I2C interface are supported on each port. Each TMDS channel allows signaling rates up to 1.65 Gbps. The active source is selected by configuring source selectors, S1, S2, and S3. The selected TMDS inputs from each port are switched through a 3-to-1 multiplexer. The I2C interface of the selected input port is linked to the I2C interface of the output port, and the hot plug detector (HPD) of the selected input port is output to HPD_SINK. For the unused ports, the I2C interfaces are isolated, and the HPD pins are kept low. Termination resistors (50- Ω), pulled up to V CC, are integrated at each receiver input pin. External terminations are not required. A precision resistor is connected externally from the VSADJ pin to ground for setting the differential output voltage to be compliant with the TMDS standard. When the output is connected to a standard TMDS termination and OE is high, the output is high impedance. The TMDS341 provides fixed 8-dB input equalization and selectable 3-dB output de-emphasis to optimize system performance through 5-meter or longer DVI compliant cables. The device is characterized for operation from 0 °C to 70°C. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2005, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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