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深圳市創寶來科技有限公司

PS331 integrates a 3-to-1 HDMI/DVI switch to simplify system level design and reduce system level
cost for applications requiring multiple HDMI/DVI input connectors and single output device in
digital TV and other emerging digital appliances.
TMDS inputs and corresponding DDC and HPD connection are selected by local I2C control bus.
DDC I2C pins are bi-directional and HPD pins are uni-directional, SDAx/SCLx and HPD_SINK are
5 V tolerant I/O. Each TMDS channel can support data rate up to 2.25 Gbps with equalization up to
17 dB. PS331 supports both DC and AC coupling.
The PS331 supports either fixed cable equalization with default setting of 10 dB at 1.65 Gbps and
12 dB at 2.25 Gbps or programmable equalization from 0 to 15 dB at 1.65 Gbps and from 0 to 17dB
at 2.25 Gbps by I2C control registers.
The PS331 integrated EDID shadow RAM helps reduce the BOM cost by removing three external
EDID ROMs.