Features

• Two lane DisplayPort® 1.2a receiver

• Triple 10-bit video DAC

– 162 MSPS throughput rate

– VSIS compatible

– RGB output with 0 to 700 mV

range

• 3.3 V HSYNC, VSYNC

• Resolution through WUXGA

• EDID, MCCS pass-through support

• 3.3 V DDC output signals

• Sink detection logic

• Low power operation – Active 400

mW, standby mode 15 mW

• Package: 64-pin QFN, 6 x 6 mm

Applications

• DisplayPort to VGA dongle as an

attachment to notebook and desktop PCs

• DisplayPort to VGA conversion for

notebook and desktop PC motherboard

applications

1. Description

STDP3150 is a DisplayPort to VGA signal format converter for interfacing DisplayPort based PC,

notebook, tablet, and smart phones with conventional VGA displays. DisplayPort offers a unified,

scalable, and cost effective interface for embedded and external display applications. As desktop

and notebook PCs are increasingly transitioning from conventional analog type interfaces to

DisplayPort, STDP3150 facilitates the transition by offering seamless connectivity between new

DisplayPort PC, notebooks, and the installed base VGA monitors and projectors. Besides the

dongle application, STDP3150 is also a perfect fit for the notebook and desktop motherboard

designs based on new generation Intel, AMD CPU/GPU architecture. STDP3150 is a highly

integrated converter featuring a DisplayPort receiver, video DAC, clock form generator, test pattern

generator, and sink detection block. In addition, STDP3150 includes EDID and MCCS passthrough

features, forming a fully transparent operation between the PC and display. Active power

consumption of this device is as low as 400 mW, and thus it can be powered by the DisplayPort

source when used in a dongle application. The device has a built-in sink detection feature that

determines the active and standby state. The device enters into standby (low power) state

whenever the VGA cable is disconnected and returns to normal operation when the cable is

connected back.

STDP3150 supports video resolutions from VGA through WUXGA. The input DisplayPort interface

consists of two main lanes, AUX channel, and HPD signal that maps directly to a standard

DisplayPort connector via two layers PCB. The output interface consists of analog R, G, B video,

Hsync, Vsync, and DDC signals. Analog video signal amplitude ranges from 0 to 700 mV from a

10-bit video DAC with maximum sampling frequency of 162 MHz. The VGA output signal interface

conforms to the VSIS standards with separate Hsync and Vsync control signals. The DDC_SDA

and DDC_CLK signals are driven from an I2C master, which controls I2C traffic between the

DisplayPort AUX channel and external slave device.