- PDMI
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For the mathematical research institute, see St. Petersburg Department of Steklov Institute of Mathematics of Russian Academy of Sciences.
Portable Digital Media Interface (PDMI) 
Production history Designer ANSI/CEA Designed February 2010 General specifications Length 22 mm Width 2.5 mm Hot pluggable Yes External Yes Audio signal Analog stereo, digital DisplayPort (1-8 channels, 16 or 24-bit linear PCM; 32 to 192 kHz sampling rate) Video signal Digital 2-lane DisplayPort 1.1, 4.32 Gbit/s data rate Pins 30 pins Data Data signal USB 3.0 SuperSpeed + 1 Mbit/s for the DisplayPort auxiliary channel PDMI (Portable Digital Media Interface) is an interconnection standard for portable media players. It has been developed by CEA (Consumer Electronics Association) as ANSI/CEA-2017-A standard Common Interconnection for Portable Media Players in February 2010. Chaired by David McLauchlan from Microsoft, the standard was developed with the input or support of over fifty consumer electronics companies worldwide. [1] It is designed as an alternative to the iPod interface which was used exclusively by Apple Inc.[2]
CEA-2017-A is the new revision of the earlier ANSI/CEA-2017 standard adopted in July 2007, which used a proprietary serial protocol based on Media Oriented Systems Transport (MOST) in-vehicle network;[3][4][5] the 2007 revision has seen only marginal use in actual devices. [6] New CEA-2017-A devices are not compatible with the earlier 2007 revision.
PDMI connector is intended to serve as a common interconnection between docking devices and displays and portable/nomadic devices with media playback capability. Intended host devices include docking stations for home A/V equipment, in-car entertainment systems, digital media kiosks, and hotel/in-flight entertainment systems, where PDMI aims to replace the ubiquitous iPod cradle connector.[7]
PDMI uses a 30 pin receptacle with approximate size of 2.5 mm by 22 mm; a cradle-style connector is also defined. The PDMI connector includes the following electrical interfaces:
- 2-lane DisplayPort v1.1a with AUX Channel, Hot Plug Detect, and 3.3 V power line
- USB 3.0, USB 2.0, and USB On-The-Go
- Analog stereo line-out for legacy audio
- HDMI CEC for remote control
- High output power line from both host and portable device
DisplayPort component provides data rate of 4.32 Gbit/s and supports up to 1080p60 video and 8-channel audio playback on an attached display device, as well as EDID and display control commands. DisplayPort signal can be converted to HDMI format using active converter circuitry in the dock or external signal conversion adapter powered by 3.3 V DisplayPort power.
Power supply from both the host (docking station) and portable device allows for supporting the portable device with power and battery charging, as well as supporting accessories from the portable device.
USB 3.0 "SuperSpeed", USB 2.0, and USB On-The-Go support file transfer and device control, as well as device-to-device intercommunication.
The first mass-production device from a major manufacturer to incorporate PDMI is the Dell Streak, a 5" tablet device running the Android operating system version 1.6 through 2.2.
Devices that use PDMI Device Name Release Date Notes Advent Vega[8] Possible Non-standard connector[citation needed] Dell Streak[9] 4th June 2010 Samsung Galaxy Tab Non-standard connector[citation needed] PDMI pinout Pin No. Pin Name Interface Grouping Pin Description 1 USB 5V USB 2.0 Interface USB Power (VBUS) 2 USB DGND USB Ground 3 USB D+ Data + 4 USB OTG On‐The‐Go (allows device‐to‐device data transfer) 5 USB D‐ Data ‐ 6 HC 5V High Current Power (Output on Host) High current 5V supply (1.8A, or 3.6A if combined with pin 15) 7 DGND / HC GND High current Ground 8 AUDIO RIGHT OUT Analog Audio (Input on Host) Right analog audio output (line level) 9 AUDIO LEFT OUT Left analog audio output (line level) 10 AUDIO OUT GND Audio output ground 11 CEC CEC Consumer Electronic Control, for HDMI remote control 12 SSR‐ USB 3.0 Data Device Receive USB 3.0 SSRX‐ signal 13 GND Signal Ground 14 SSR+ USB 3.0 SSRX+ signal 15 HC 5V High Current Power ( Output from Host) High current 5V supply (1.8A, or 3.6A if combined with pin 6) 16 HC GND High current Ground 17 SST‐ USB 3.0 Data Device Transmit USB 3.0 SSTX‐ signal 18 GND Signal Ground 19 SST+ USB 3.0 SSTX+ signal 20 HPD DisplayPort v1.1a Interface, 2 Lane (Host is Sink, Device is Source) Hot Plug Detect (includes interrupt function from host) 21 DAUX+ AUX Channel + 22 DAUX‐ AUX Channel - 23 AP 3.3V DisplayPort Power (Power from portable device) 24 D1‐ Main Link Lane 1 (‐) 25 GND Signal Ground 26 D1+ Main Link Lane 1 (+) 27 GND Signal Ground 28 D0‐ Main Link Lane 0 (‐) 29 GND Signal Ground 30 D0+ Main Link Lane 0 (+) References
- ^ CEA-2017, Common Inerconnection for Portable Media Players
- ^ CEA may spawn standards effort for handhelds.
- ^ CEA-2017.1, Serial Communication Protocol for Portable Electronics Devices
- ^ http://electronics.ihs.com/news/newsletters/2007/august/cea-2017-portable-media-connector.htm
- ^ 8th MOST Interconnectivity Conference Japan (2007)
- ^ "Slacker G2 Personal Radio". Maximum PC. 2008-09-16 accessdate=2010-07-31. http://www.maximumpc.com/article/reviews/slacker_g2_personal_radio.
- ^ "DisplayPort Technical Overview, May 2010". VESA. 2010-05-23. http://www.displayport.org/cms/sites/default/files/downloads/DisplayPort_Technical_Overview.pdf.
- ^ ["http://android.modaco.com/content/advent-vega-vega-modaco-com/324387/docking-port-is-it-pdmi/" "Advent Vega forum"]. "http://android.modaco.com/content/advent-vega-vega-modaco-com/324387/docking-port-is-it-pdmi/".
- ^ "Dell Streak PDMI Pinout". http://linuxslate.com/#Dell_Streak_PDMI_Pinout.
External links
- Purchase Standards
- CEA-2017 Rev A, Common Interconnection For Portable Media Players (PDMI), $75.
- CEA-2017.1 Rev 7, Serial Communication Protocol For Portable Electronic Devices, $156.
- Slides
- DisplayPort Technical Overview; Slides; May 2010, contains slides about PDMI
- Announcements
Audio and video connectors Single conductor audio Analog audio Digital audio Video Audio and Video Visual charts Categories:- Audiovisual connectors
- Digital display connectors
- USB
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