for further information contact your local stmicroelectronics sales office. may 2013 doc id 23732 rev 2 1/8 8 STDP2550 mobility displayport (mydp) to hdmi converter data brief features mobility displayport? (mydp) receiver ? link rate hbr2/hbr/rbr ?1 lane ? aux_hpd single-ended ac coupled signal, 1 mbps hdmi 1.4 transmitter ? max data rate up to 2.97 gbps/data pair ? color depth 24, 18 bits per pixel ? 3d video timings (1920 x 1080 @ 30 hz stereo) ?cec hdcp repeater with embedded keys aux to i2c bridge for edid pass through aux to cec bridge for cec message protocol between mydp source and tv spread spectrum on displayport interface for emi reduction bandwidth ? video resolution up to 1920 x 1080 @ 60 hz ? audio 7.1 ch up to 192 khz sample rate low power operation ? powered from mydp source or from external usb +5 v supply package ?81 bga (5 x 5 mm) power supply voltages ? 3.3 v i/o; 1.2 v core applications audio-video accessory (dongle) for smart phones/tablets tv front-end hdmi output mydp input clock generation ocm, spi aux to i2c bridge i2c slave video format converter image capture hdmi transmitter displayport receiver aux to cec bridge cec ddc aux_hpd main lane hpd handler hpd www.st.com
description STDP2550 2/8 doc id 23732 rev 2 1 description the STDP2550 is a mobility displayport to hdmi converter that facilitates streaming fhd 60 hz video and audio from mydp enabled smart phones and tablets to tvs, monitors, and projectors. the STDP2550 is a vesa mobilit y displayport (mydp) standard compliant device, implementing a single lane displayport receiver and aux_hpd. the output port comprises an hdmi 1.4 compliant transmitter with cec and hpd support. the mydp standard is a digital audio-vide o interconnect based on the v esa 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 the external display. the STDP2550 uses st'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 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 si nk when used in a dongle application. the aux_hpd is a single-ended sideband channel used 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 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 mydp source over the aux_hpd line. this device has an on-chip microcontroller with spi and i2c host interf aces for system configuration purposes. the STDP2550 implements a sink detection and monitoring feature that automatically puts the device into low power operation wh enever the sink is disconnected.
STDP2550 application overview doc id 23732 rev 2 3/8 2 application overview figure 1. STDP2550 in mobile accessory (dongle) application figure 2. STDP2550 inside tv application hdmi signal 4 pair STDP2550 27 mhz crystal ddc cec aux_hpd dp 1main lane tv with hdmi input mydp tx ape video control usb mobile device dongle hpd hdmi signal STDP2550 27 mhz crystal aux to i2c i2c host interface microusb to displayport cable main lane tv soc edid aux_hpd tv soc board
feature attributes STDP2550 4/8 doc id 23732 rev 2 3 feature attributes 3.1 input interface mobility displayport main link configuration (sst format only) ? hbr2/hbr/rbr link rate ? 1 lane aux_hpd: 1 mbps manchester transaction format ?i2c over aux_hpd ? cec over aux_hpd pixel bit depth: 24 bpp, 18 bpp color format: rgb audio: up to 192 kb samples/sec, 8 ch/sample, 24 bits/ch 3.2 output interface hdmi standard ver.1.4 compliant link rate: 2.97 gbps/data pair max pixel bit depth: 24 bpp, 18 bpp color format: rgb audio: up to 192 kb samples/sec, 8 ch/sample, 24 bits/ch ddc master port hpd monitoring hdmi rx 3.3 v termination monitoring 3.3 supported video timings 1920 x 1080 (fhd) 60 hz: 24 bits/pixel 1920 x 1080 (fhd) 30 hz stereo 3d 3.4 supported audio timings up to 8-ch lpcm; word length up to 64 x fs; bit depth up to 32 bits, sample rate up to 192 khz 3.5 control channel interfaces aux_hpd, i2c host interface, spi (optional), and uart (uart for test/debug purposes only)
STDP2550 feature attributes doc id 23732 rev 2 5/8 3.6 hdcp 1.3 support key sets for dprx and hdmi tx integrated in one-time programmable rom (otp) standalone hdcp repeater capability 3.7 package 81 bga (5 x 5 mm), 0.5 ball pitch 3.8 power supply voltages 3.3 v i/o; 1.2 v core 3.9 esd 2 kv hbm, 500 v cdm
ordering information STDP2550 6/8 doc id 23732 rev 2 4 ordering information 4.1 ecopack ? in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. table 1. order codes part number description STDP2550-ac 81 bga (5 x 5 mm) delivered in trays STDP2550-act 81 bga (5 x 5 mm) delivered in tape and reel
STDP2550 revision history doc id 23732 rev 2 7/8 5 revision history table 2. document revision history date revision changes 05-oct-2012 1 initial release. 07-may-2013 2 updated ordering information section.
STDP2550 8/8 doc id 23732 rev 2 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. st products are not authorized for use in weapons. nor are st products designed or authorized for use in: (a) safety critical applications such as life supporting, active implanted devices or systems with product functional safety requirements; (b) aeronautic applications; (c) automotive applications or environments, and/or (d) aerospace applications or environments. where st products are not designed for such use, the purchaser shall use products at purchaser?s sole risk, even if st has been informed in writing of such usage, unless a product is expressly designated by st as being intended for ?automotive, automotive safety or medical? industry domains according to st product design specifications. products formally escc, qml or jan qualified are deemed suitable for use in aerospace by the corresponding governmental agency. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2013 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america
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