TMDS442
www.ti.com SLLS757A – AUGUST 2006 – REVISED MARCH 2007 4-TO-2 DVI/HDMI SWITCH FEATURES 1 A 4-to-2 Single-Link or 2-to-1 Dual-Link
DVI/HDMI Physical Layer Switch Compatible with HDMI 1.3a Supports 2.25 Gbps Signaling Rate for 480i/p,
720i/p, and 1080i/p Resolutions up to 12-Bit
Color Depth Integrated Receiver Terminations 8-dB Receiver Equalizer Compensates for
Losses From Standard HDMI Cables Selectable Output De-Emphasis Compensates
for Losses From Flat Cables High-Impedance Outputs When Disabled
2 I2C Repeater Isolates Bus Capacitance at Both
Ends
TMDS Inputs HBM ESD Protection Exceeds 6
kV
3.3-V Supply Operation
128-Pin TQFP Package
ROHS Compatible and 260В°C Reflow Rated APPLICATIONS Digital TV
Digital Projector
Audio Video Receiver
DVI or HDMI Switch DESCRIPTION
The TMDS442, 4-to-2 port DVI/HDMI switch, allows up to 4 digital video interface (DVI) or high-definition
multimedia interface (HDMI) ports to be switched to two independent display blocks. The essential requirement
of picture-in-picture display from two digital audiovisual sources is having two individual DVI or HDMI receivers in
a digital display system. TMDS442 supports two DVI or HDMI receivers to enable multiple-source selection
(picture-in-picture), as well as supports acting as a 4-input 1-output video switch.
Each input or output port contains one 5-V power indicator (5V_PWR), one hot plug detector (HPD), a pair of I2C …
