STDP2550中文资料芯凯电子数据手册PDF规格书

特性 Features

• DisplayPort (DP) / Mobility DisplayPort™

(DP) receiver

– DP1.2a compliant

– Link rate HBR2/HBR/RBR

– 1, 2, or 4 lanes

– AUX CH 1 Mbps

– AUX_HPD single-ended AC coupled

signal

• HDMI 1.4 transmitter

– Max data rate up to 2.97 Gbps/data pair

– Color depth 24, 48 bits per pixel

– 3D video timings

– CEC

• SPDIF audio output

– 192 KHz / 24 bits

– Compressed / LPCM

• HDCP repeater with embedded keys

• ASSR – eDP display Authentication option

• AUX to I2C bridge for EDID/MCCS pass

through

• Spread spectrum on DP/MyDP interface for

EMI reduction

• Deep color support

– RGB/YCC (4:4:4) – 16 bit color

– YCC (4:2:2) -16 bit color

– Color space conversion- YUV to RGB and RGB

to YUV

• Bandwidth

– Video resolution up to 4kx2k @ 30Hz;

1920x1080 @ 120Hz

– MyDP operation up to 1920 x 1080 @ 60 Hz

– Audio 7.1 Ch up to 192 kHz sample rate

• Low power operation

• Package

– 81 VFBGA (5 x 5 mm)

• Power supply voltages

– 3.3 V I/O; 1.2 V core

Applications

• DisplayPort to HDMI bridge for TVs and projectors

• Audio-video accessory (dongle) for Notebooks,

Smart phones/Tablets

1. Description

The STDP2550 is a standard DisplayPort or a Mobility DisplayPort to HDMI converter targeted for

notebook, smartphones, tablets and accessory applications.The STDP2550 is a VESA DisplayPort 1.2a

standard compliant device, implementing four lanes DisplayPort receiver, 1Mbps AUX CHand HPD. The

output port comprises an HDMI 1.4 compliant transmitter with CEC and HPD support. This device also

functions as a Mobility DisplayPort receiver with one pair of DP main lane and a single-ended AUX_HPD

for mobile applications. The MyDP standard is a digital audio-video interconnect based on the VESA

DisplayPort standard for a mobile source device capable of streaming uncompressed audio and video. It

uses the existing standard 5-pin connector commonly used for charging the portable mobile devices to

stream the audio-video to an external display.

The STDP2550 uses Kinetic's latest generation DisplayPort receiver technology that supports a single AV

stream at HBR2 speed, a data rate of 5.4 Gbps per lane. Also, the HDMI transmitter in STDP2550 is

based on advanced high-speed TMDS technology supporting link rate up to 2.97 Gbps and the stereo 3D

formats. It supports video timing up to 4K2K 30 Hz or FHD 120 Hz with color depth from 24 bits to 48 bits

per pixel depending on available bandwidth. In MyDP applications, it can deliver 1080p 60 Hz video with a

color depth of 24 bits per pixel and audio up to 8-channel at 192 Kb sample rate from a MyDP source to

HDMI TV. This device complies with the HDCP 1.3 content protection scheme with an embedded key

option for secure transmission of premium digital AV content. It can also act as an HDCP repeater for the

downstream sink when used in a dongle application.

In the MyDP application, the AUX CH positive signal functions as AUX_HPD, a single-ended sideband

channel for low-speed data exchange between the MyDP source and the downstream sink. The

AUX_HPD data transfer rate is 1 Mbps, which is quite adequate for handling I2C and CEC protocols.

MyDP source also uses the AUX_HPD channel for the DPCD read-write access.

The AUX-to-I2C translator in the STDP2550 allows DP or MyDP source to access EDID from the

connected sink. Similarly, the AUX-to-CEC translator handles CEC message transfer from the HDMI sink to

the upstream source over the AUX CH / AUX_HPD line. This device has an on-chip microcontroller with

SPI and I2C host interfaces for system configuration purpose. The STDP2550 implements a sink

detection and monitoring feature that automatically puts the device into low power operation whenever the

sink is disconnected.