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STDEV003ABTR Arkusz danych(PDF) 1 Page - STMicroelectronics |
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STDEV003ABTR Arkusz danych(HTML) 1 Page - STMicroelectronics |
1 / 41 page July 2008 Rev 3 1/41 41 STDVE003A Adaptive 3.4 Gbps 3:1 TMDS/HDMI signal equalizer Features ■ Compatible with the high-definition multimedia interface (HDMI) v1.3 digital interface ■ Conforms to the transition minimized differential signaling (TMDS) voltage standard on input and output channels ■ 340 MHz maximum clock speed operation supports all video formats with deep color at maximum refresh rates ■ 3.4 Gbps data rate per channel ■ Fully automatic adaptive equalizer ■ Single supply VCC: 3.135 to 3.465 V ■ ESD: ±8 KV contact for all I/Os ■ Integrated open-drain I2C buffer for display data channel (DDC) ■ 5.3 V tolerant DDC and HPD I/Os ■ Lock-up free operation of I2C bus ■ 0 to 400 kHz clock frequency for I2C bus ■ Low capacitance of all the channels ■ Equalizer regenerates the incoming attenu- ated TMDS signal ■ Buffer drives the TMDS outputs over long PCB track lengths ■ Low output skew and jitter ■ Tight input thresholds reduce bit error rates ■ On-chip selectable 50 Ω input termination ■ Low ground bounce ■ Data and control inputs provide undershoot clamp diode ■ Available in TQFP80 package ■ -40°C to 85°C operating temperature range ■ Evaluation kit is available Description The STDVE003A integrates a 4-channel 3.4 Gbps TMDS equalizer and a 3:1 switch to select one of the three HDMI ports. The 3-input HDMI ports can be either external ports or internal sources. High- speed data paths and flow-through pinout minimize the internal device jitter and simplify the board layout. The equalizer overcomes the intersymbol interference (ISI) jitter effects from lossy cables. The buffer/driver on the output can drive the TMDS output signals over long distances. In addition to this, STDVE003A integrates the 50 Ω termination resistor on all the input channels to improve performance and reduce board space. The device can be placed in a low-power mode by disabling the output current drivers. The STDVE003A is ideal for advanced TV and STB applications supporting HDMI/DVI standard. The differential signal from the HDMI/DVI ports can be routed through the STDVE003A to guarantee good signal quality at the HDMI receiver. Designed for very low skew, jitter and low I/O capacitance, the switch preserves the signal integrity to pass the stringent HDMI compliance requirements. TQFP80 Table 1. Device summary Order code Operating temperature Package Packaging STDEV003ABTR -40°C to 85°C TQFP80 Tape and reel www.st.com |
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