STDP4020 데이터 시트보기 (PDF) - Unspecified

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STDP4020

DisplayPort receiver

Unspecified 

STDP4020, STDP4010

2. Application overview

The STDP4020 is designed as a DisplayPort front-end capture device for display applications. Typical

display design has a display controller (scaler) that acts as system master (host). The host controller

configures STDP4020 through a 2-wire host interface. The host and STDP4020 also use interrupt

mechanism whenever the slave needs attention. The STDP4020 may require an external SPI Flash to

store firmware for supporting custom specific applications. The audio and video output from STDP4020

can directly interface to the host display controller for further processing. The AUX I2C bypass channel

handles the I2C traffic between STDP4020 and host controller, as shown in the figure below.

Main Link

AUX CH

HPD_out

Figure 1. System interface block diagram

SPI

Flash

SPI

I2C slave

STDP4020

AUX I2C

DP

EDID

Host I2C

INTR

TTL / LVDS

SPDIF/I2S

I2C Master

DP / LVDS

Video Controller /

Host Controller

Video

Audio

DDC input

L/R audio

Display

Audio

Amp

Speakers

Doc ID 15885

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