PDMI

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

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:

• 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 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
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

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).

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