Mobility DisplayPort (MyDP) to HDMI converter Rev 4 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 cor Applications Audio-video accessory (dongle) for smart phones/tablets TV front-end MYDP Input Main lane AUX_HPD DisplayPort Receiver Image Capture Video Format Converter HDMI Transmitter AUX to CEC Bridge HDMI Output CEC AUX to I2C Bridge DDC I2C Slave Clock Generation OCM, SPI HPD Handler HPD Doc ID 23732 Page 1 of 8
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 Mobility 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-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 the external display. The STDP2550 uses MegaChips 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 sink 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 interfaces for system configuration purposes. The STDP2550 implements a sink detection and monitoring feature that automatically puts the device into low power operation whenever the sink is disconnected. Doc ID 23732 Page 2 of 8
2. Application overview Figure 1. STDP2550 in mobile accessory (dongle) application TV with HDMI input Mobile Device 27 MHz Crystal Dongle APE Video Control USB MYDP TX DP 1Main lane AUX_HPD STDP2550 HDMI Signal 4 pair HPD DDC CEC Figure 2. STDP2550 inside TV application TV SoC Board 27 MHz Crystal I2C host interface MicroUSB to DisplayPort Cable Main lane AUX_HPD STDP2550 AUX to I2C HDMI signal TV SoC EDID Doc ID 23732 Page 3 of 8
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 Doc ID 23732 Page 4 of 8
3.5 Control channel interfaces AUX_HPD, I2C host interface, SPI (optional), and UART (UART for test/debug purposes only) 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 Doc ID 23732 Page 5 of 8
4. Ordering information Table 1. Order codes Part number Description STDP2550-AD STDP2550-ADT 81 BGA (5 x 5 mm) delivered in trays 81 BGA (5 x 5 mm) delivered in tape and reel Doc ID 23732 Page 6 of 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. 20-May-2014 3 Updated to comply with MegaChips documentation style/formatting. 15-Sep-2014 4 Updated footers and added copyright information to last page. Doc ID 23732 Page 7 of 8
Notice Semiconductor products may possibly experience breakdown or malfunction. Adequate care should be taken with respect to the safety design of equipment in order to prevent the occurrence of human injury, fire or social loss in the event of breakdown or malfunction of semiconductor products The overview of operations and illustration of applications described in this document indicate the conceptual method of use of the semiconductor product and do not guarantee operability in equipment in which the product is actually used. The names of companies and trademarks stated in this document are registered trademarks of the relevant companies. MegaChips Co. provides no guarantees nor grants any implementation rights with respect to industrial property rights, intellectual property rights and other such rights belonging to third parties or/and MegaChips Co. in the use of products and of technical information including information on the overview of operations and the circuit diagrams that are described in this document. The product described in this document may possibly be considered goods or technology regulated by the Foreign Currency and Foreign Trade Control Law. In the event such law applies, export license will be required under said law when exporting the product. This regulation shall be valid in Japan domestic. In the event the intention is to use the product described in this document in applications that require an extremely high standard of reliability such as nuclear systems, aerospace equipment or medical equipment for life support, please contact the sales department of MegaChips Co. in advance. Copyright 2014 All rights reserved Head Quarters 1-1-1 Miyahara, Yodogawa-ku Osaka 532-0003, Japan TEL: +81-6-6399-2884 Tokyo Office 17-6 Ichiban-cho, Chiyoda-ku, Tokyo 102-0082, Japan TEL: +81-3-3512-5080 Makuhari Office 1-3 Nakase Mihama-ku Chiba 261-8501, Japan TEL: +81-43-296-7414 San Jose Office 2033 Gateway Place, Suite 400, San Jose, CA 95110 U.S.A. TEL: +1-408-570-0555 Taiwan Branch RM. B 2F, Worldwide House, No.129, Min Sheng E. Rd., Sec. 3, Taipei 105, Taiwan TEL: +886-2-2547-1297 Tainan Office RM. 2, 8F, No.24, Da Qiao 2 Rd., Yong Kang Dist., Tainan 710, Taiwan TEL: +886-6-302-2898 Zhunan Office No.118, Chung-Hua Rd., Chu-Nan, Miao-Li 350, Taiwan TEL: +886-37-666-156 Shenzhen Office Room 6307, Office Tower, Shun Hing Square, 5002 Shen Nan Dong Road, Luohu District, Shenzhen 518000, P. R. China TEL: +86-755-3664-6990 India Branch 17th Floor, Concorde Block UB City, Vittal Mallya Road, Bangalore 560-001, India TEL: +91-80-4041-3999 Doc ID 23732 Page 8 of 8