PDMI

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Portable Digital Media Interface (PDMI)
PDMI.jpg
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[edit]

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[edit]

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[citation needed]
Dell Streak[9] 4th June 2010
Boeing Black[10] 2014.2Q[citation needed]

PDMI pinout[edit]

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[edit]

  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)". 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". VESA. 2010-05-23. 
  8. ^ ["http://android.modaco.com/content/advent-vega-vega-modaco-com/324387/docking-port-is-it-pdmi/" "Advent Vega forum"]. 
  9. ^ "Dell Streak PDMI Pinout". 
  10. ^ "Boeing Black Product Card (PDF)". 

External links[edit]

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
Announcements