PDMI

Portable Digital Media Interface (PDMI)
Designer CEA
Designed February 2010
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 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]

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] Possible Non-standard connector
Dell Streak[9]4 June 2010
Boeing Black[10]2014.2Q

PDMI pinout

PDMI pinout
Pin No. Pin Name Interface Grouping Pin Description
1USB 5V USB 2.0 InterfaceUSB Power (VBUS)
2USB DGNDUSB Ground
3USB D+Data +
4USB OTG On‐The‐Go (allows device‐to‐device data transfer)
5USB D‐ Data ‐
6HC 5V High Current Power (Output on Host)High current 5V supply (1.8A, or 3.6A if combined with pin 15)
7DGND / HC GND High current Ground
8AUDIO RIGHT OUT Analog Audio (Input on Host)Right analog audio output (line level)
9AUDIO LEFT OUT Left analog audio output (line level)
10AUDIO OUT GND Audio output ground
11CEC CEC Consumer Electronic Control, for HDMI remote control
12SSR‐ USB 3.0 Data Device ReceiveUSB 3.0 SSRX‐ signal
13GND Signal Ground
14SSR+ USB 3.0 SSRX+ signal
15HC 5V High Current Power ( Output from Host) High current 5V supply (1.8A, or 3.6A if combined with pin 6)
16HC GND High current Ground
17SST‐ USB 3.0 Data Device TransmitUSB 3.0 SSTX‐ signal
18GND Signal Ground
19SST+ USB 3.0 SSTX+ signal
20HPD DisplayPort 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 -
23AP 3.3V DisplayPort Power (Power from portable device)
24D1‐ Main Link Lane 1 (‐)
25GND Signal Ground
26D1+ Main Link Lane 1 (+)
27GND Signal Ground
28D0‐ Main Link Lane 0 (‐)
29GND Signal Ground
30D0+ Main Link Lane 0 (+)

References

  1. CEA-2017, Common Inerconnection for Portable Media Players
  2. CEA-2017.1, Serial Communication Protocol for Portable Electronics Devices
  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. 2008-09-16. Retrieved 2010-07-31.
  6. "CEA-2017-A (ANSI)" (PDF). ce.org. February 1, 2010. Retrieved August 1, 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. 2010-05-23.
  8. ["http://android.modaco.com/content/advent-vega-vega-modaco-com/324387/docking-port-is-it-pdmi/" "Advent Vega forum"] Check |url= value (help).
  9. "Dell Streak PDMI Pinout".
  10. "Boeing Black Product Card (PDF)" (PDF).
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