PDMI

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]

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 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

Development and history

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;[2][3][4] the 2007 revision has seen only marginal use in actual devices. [5] New CEA-2017-A devices are not compatible with devices manufactured under the 2007 revision.[6]

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:

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.

Devices that use PDMI

The first mass-production device from a major manufacturer to incorporate PDMI is the Dell Streak, a 5 in (130 mm) 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]19 November 2010[9]
Dell Streak[10]4 June 2010
Boeing Black[11]2014.2Q

PDMI pinout
PDMI pinout
Pin No. Pin Name Interface Grouping Pin Description
1USB 5VUSB 2.0 InterfaceUSB Power (VBUS)
2USB DGNDUSB Ground
3USB D+Data +
4USB OTGOn‐The‐Go (allows device‐to‐device data transfer)
5USB D‐Data ‐
6HC 5VHigh Current Power (Output on Host)High current 5V supply (1.8A, or 3.6A if combined with pin 15)
7DGND / HC GNDHigh current Ground
8AUDIO RIGHT OUTAnalog Audio (Input on Host)Right analog audio output (line level)
9AUDIO LEFT OUTLeft analog audio output (line level)
10AUDIO OUT GNDAudio output ground
11CECCECConsumer Electronic Control, for HDMI remote control
12SSR‐USB 3.0 Data Device ReceiveUSB 3.0 SSRX‐ signal
13GNDSignal Ground
14SSR+USB 3.0 SSRX+ signal
15HC 5VHigh Current Power ( Output from Host)High current 5V supply (1.8A, or 3.6A if combined with pin 6)
16HC GNDHigh current Ground
17SST‐USB 3.0 Data Device TransmitUSB 3.0 SSTX‐ signal
18GNDSignal Ground
19SST+USB 3.0 SSTX+ signal
20HPDDisplayPort v1.1a Interface, 2 Lane (Host is Sink, Device is Source)Hot Plug Detect (includes interrupt function from host)
21DAUX+AUX Channel +
22DAUX‐AUX Channel -
23AP3.3V DisplayPort Power (Power from portable device)
24D1‐Main Link Lane 1 (‐)
25GNDSignal Ground
26D1+Main Link Lane 1 (+)
27GNDSignal Ground
28D0‐Main Link Lane 0 (‐)
29GNDSignal Ground
30D0+Main Link Lane 0 (+)

References
  1. CEA-2017, Common Inerconnection for Portable Media Players Archived 7 March 2012 at the Wayback Machine
  2. CEA-2017.1, Serial Communication Protocol for Portable Electronics Devices Archived 23 September 2010 at the Wayback Machine
  3. http://electronics.ihs.com/news/newsletters/2007/august/cea-2017-portable-media-connector.htm
  4. 8th MOST Interconnectivity Conference Japan (2007)
  5. "Slacker G2 Personal Radio". Maximum PC. 16 September 2008. Retrieved 31 July 2010.
  6. "CEA-2017-A (ANSI)" (PDF). ce.org. 1 February 2010. Archived from the original (PDF) on 4 May 2013. Retrieved 1 August 2012. CEA-2017-A includes significant changes from ANSI/CEA-2017. Connectors and devices implemented using CEA-2017-A may not be compatible with those that use ANSI/CEA-2017.
  7. "DisplayPort Technical Overview, May 2010" (PDF). VESA. 23 May 2010. Archived from the original (PDF) on 26 July 2011.
  8. "Advent Vega forum". Archived from the original on 7 July 2012.
  9. "Advent Vega went on Sales in UK". Engadget. 19 November 2010. Archived from the original on 24 December 2010. Retrieved 19 November 2010.
  10. "Dell Streak PDMI Pinout".
  11. "Boeing Black Product Card (PDF)" (PDF). Archived from the original (PDF) on 28 February 2014. Retrieved 27 February 2014.
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.
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