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.CEA-2017, Common Inerconnection for Portable Media Players

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;CEA-2017.1, Serial Communication Protocol for Portable Electronics Devices 8th MOST Interconnectivity Conference Japan (2007) the 2007 revision has seen only marginal use in actual devices. New CEA-2017-A devices are not compatible with devices manufactured under the 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.

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.

Devices that use PDMI

The first mass-production device from a major manufacturer to incorporate PDMI is the Dell Streak, a tablet device running the Android operating system version 1.6 through 2.2.

+Devices that use PDMI Device Name Release date NotesAdvent Vega19 November 2010Dell Streak4 June 2010Boeing Black2014.2Q

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 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 − 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

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 CEA Announced Portable Media Connection Standard CEA may spawn standards effort for handhelds