AD8192

2 ： 1 HDMI / DVI开关，具有均衡和DDC / CEC缓冲器 2:1 HDMI/DVI Switch with Equalization and DDC/CEC Buffers

Product Details

The is a complete HDMI™/DVI link switch featuring equalized TMDS inputs and pre-emphasized TMDS outputs ideal for systems with long cable runs. The TMDS outputs can be set to a high impedance state to reduce the power dissipation and/or allow the construction of larger arrays using the wire-OR technique. The AD8192 includes bidirectional buffering for the DDC bus and CEC line, with integrated pull-up resistors for the CEC line. The AD8192 is available in a space-saving, 56-lead LFCSP surface-mount, lead-free plastic package specified to operate over the −40°C to +85°C temperature range.

**Product Highlights**

1. Fully HDMI 1.3a transmit and receive compliant.

2. Supports data rates up to 2.25 Gbps, enabling greater than 1080p HDMI formats with deep color 12-bit and UXGA 1600 × 1200 DVI resolutions.

3. Input cable equalizer enables use of long cables; more than 20 m 24 AWG at data rates up to 2.25 Gbps.

4. Auxiliary switch isolates and buffers the DDC bus and the CEC line, improving total system capacitance limit.

5. Hot plug detect HPD signal is pulsed low on link switch.

6. Manually or automatically switched input terminations.

**Applications**

* Front panel buffer for advanced television HDTV sets

* Standalone HDMI switcher

* Multiple input displays

* Projectors

* A/V receivers

* Set-top boxes

Data Sheet, Rev. 0, 5/08

### Features and Benefits

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2 inputs, 1 output HDMI/DVI links

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HDMI 1.3 receive & transmit compliant

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Four TMDS channels per link:

Supports 250 Mbps - 2.25 Gbps data rates and beyond

Supports 25 MHz - 225 MHz pixel clocks and beyond

Fully buffered unidirectional inputs/outputs

Globally-switchable 50 Ω on-chip terminations

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Equalized inputs and pre-emphasized outputs

Fully flexible input/output mapping

Input terminations disabled for unselected inputs

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Three auxiliary channels per link:

Buffered and switched DDC bus SDA and SCL

DDC bus logic level translation 3.3 V, 5 V

Buffered CEC bus with integrated pull-up resistors 27 kΩ

Hot plug detect pulse low on channel switch

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Input/output capacitance isolation

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Output disable feature:

Reduced power dissipation

Output termination removal on TMDS channels

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Single-supply operation 3.3 V

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Standards compatible: DVI, HDMI 1.3, HDCP, CEC

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Serial I2C slave control interface

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56-pin 8 mm × 8 mm LFCSP Pb-free package