PDMI
Encyclopedia
PDMI is an interconnection standard for portable media player
s. 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. It is designed as an alternative to the iPod interface which was used exclusively by Apple Inc.
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; the 2007 revision has seen only marginal use in actual devices. 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
.
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 1080p
60 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.
Slides
Announcements
Portable media player
A portable media player or digital audio player, is a consumer electronics device that is capable of storing and playing digital media such as audio, images, video, documents, etc. the data is typically stored on a hard drive, microdrive, or flash memory. In contrast, analog portable audio...
s. It has been developed by CEA (Consumer Electronics Association
Consumer Electronics Association
The Consumer Electronics Association is a standards and trade organization for the consumer electronics industry in the United States. The Consumer Electronics Association is the preeminent trade association promoting growth in the $173 billion U.S...
) as ANSI
Ansi
Ansi is a village in Kaarma Parish, Saare County, on the island of Saaremaa, Estonia....
/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. It is designed as an alternative to the iPod interface which was used exclusively by Apple Inc.
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; the 2007 revision has seen only marginal use in actual devices. 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
IPod
iPod is a line of portable media players created and marketed by Apple Inc. The product line-up currently consists of the hard drive-based iPod Classic, the touchscreen iPod Touch, the compact iPod Nano, and the ultra-compact iPod Shuffle...
cradle connector
Dock Connector
A dock connector is a connector used to attach a mobile electronic device simultaneously to multiple external resources. The dock connector will typically carry a variety of signals and power, through a single connector, to simplify the process of docking the mobile device...
.
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 DisplayPortDisplayPortDisplayPort is a digital display interface standard produced by the Video Electronics Standards Association . The specification defines a royalty-free digital interconnect for audio and video. The interface is primarily used to connect a video source to a display device such as a computer monitor...
v1.1a with AUX Channel, Hot Plug Detect, and 3.3 V power line - USB 3.0, USB 2.0, and USB On-The-GoUSB On-The-GoUSB On-The-Go, often abbreviated USB OTG, is a specification that allows USB devices such as digital audio players or mobile phones to act as a host allowing a USB Flash Drive, mouse, or keyboard to be attached.- Architecture :...
- Analog stereo lineLine levelLine level is a term used to denote the strength of an audio signal used to transmit analog sound between audio components such as CD and DVD players, TVs, audio amplifiers, and mixing consoles, and sometimes MP3 players....
-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 1080p
1080p
1080p is the shorthand identification for a set of HDTV high-definition video modes that are characterized by 1080 horizontal lines of resolution and progressive scan, meaning the image is not interlaced as is the case with the 1080i display standard....
60 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
Dell Streak
Dell Streak 5 is a smartphone/tablet PC hybrid from Dell that uses the Android operating system. It comes with a capacitive touchscreen and two cameras, a 5MP one with dual-LED flash on the back and a VGA-resolution one on the front for video calling; both are capable of video.The development...
, a 5" tablet device running the Android operating system
Operating system
An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
version 1.6 through 2.2.
| Device Name | Release Date | Notes |
|---|---|---|
| Advent Vega Advent Vega The Advent Vega is an Android-based compact tablet computer produced by Dixons Retail plc that was released on 19 November 2010 in the UK... |
Possible Non-standard connector | |
| Dell Streak Dell Streak Dell Streak 5 is a smartphone/tablet PC hybrid from Dell that uses the Android operating system. It comes with a capacitive touchscreen and two cameras, a 5MP one with dual-LED flash on the back and a VGA-resolution one on the front for video calling; both are capable of video.The development... |
4th June 2010 | |
| Samsung Galaxy Tab Samsung Galaxy Tab The Samsung Galaxy Tab is an Android-based tablet computer produced by Samsung introduced on 2 September 2010 at the IFA in Berlin.The Galaxy Tab has a TFT-LCD touchscreen, Wi-Fi capability, a 1.0 GHz ARM Cortex-A8 Samsung Exynos 3110 processor, the Swype input system, a 3.2 MP rear-facing... |
Non-standard connector |
| 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 (+) |
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