Talk:TRRS Phono Plug
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Headset headphone microphone for mobile devices can have 2.5mm or 3.5mm plug in TRRS.
3.5mm TRRS to 3.5 TRRS Adapter for Select Phones - 3.5mm to 3.5mm TRRS adapter that reverses the microphone and ground pins
iPhone Compatible Wiring - The iPhone style wiring is also compatible with the following devices (Partial list):
Phandroid - Accessory wired earbuds with mic
Notes on radio Headsets connection - There are basically eight types of wiring harness for the headsets available ,they are determined by the type of plug wiring required for the radio transceiver.
Patching into Android music control - Here’s a look at the TRRS cable that Android phones use.
Okay to finally clarify this issue for all.
In all of these explanations- imagine that the headphone plug is facing right (ie -->) Connection types for headphones with volume controls, and a mic are labeled as TRRS. The original 3.5mm headphones (for the first ipods etc) used TRS- Tip, Ring, Sleeve- from left to right, Left Audio, Right Audio, Ground.
On TRRS there are 2 types- the original TRRS configuration was produced by Nokia and has a pinout of Left Audio, Right Audio, Mic, Ground.
Apple came along and in typical elitist fashion changed their pinout to Left Audio, Right Audio, Ground, Mic.
This is why many apple headsets will not work with android, because the last 2 connections, for Mic and Ground are switched. It also presents an issue with controls. The way that songs are skipped (forwards, backwards, and pause)comes through signals that are sent down the ground channel. The way that volume is increased/decreased happens through signals sent down the Mic channel. This is why- if you try a set of newer iPhone earbuds on the GSIII- as I have- the center button does nothing, but yet the volume up and volume down both pause tracks, and allow you to skip them!!
Apple has patents on their software that will interpret these signals- and in fact the resistances (the actual ohm resistance in-line on the controls- not to get scientific or anything are designed to work only with Apple products.
Hope this clarifies things up a bit
- credit to: djdosage
- source: http://forums.androidcentral.com/t-galaxy-s-iii/186069-headphones-mic.html
Microphone / Earphone Headsets
The iPhone compatible wiring convention has the sleeve wired for the microphone while the Nokia convention has the sleeve as the ground. Nokia was first and is more common on Android phones. Apple choose to ignore the existing convention and swap the microphone and ground.
The iPhone style wiring is also compatible with the following devices (Partial list):
- Apple: All products using the 3.5mm headset jack including iPhone, iPad, iPod and MAC computers.
- Blackberry: 8110, 8120, 8130, 8220, 8230, 8300, 8310, 8320, 8330, 8520, 8900, 9000, 9500, 9530, 9630, 9700
- LG: en VTouch, LG Chocolate 3 (VX8560), LG AX585, UX585 Rhythm, LG AX840 Tritan, LG Incite CT810, LG VX11000 enV Touch, LG VX8560 Chocolate 3 Series, LG VX9700 Dare Series
- Motorola: A455 Rival, ROKR E8, EM330/ EM28, KRAVE ZN4 Cell, Q Phone PDA, QA1 Karma, QA30 Hint, ROKR E2, ROKR Z6, MOTO VE440, ZINE ZN5, Rockr E8, Razr VE20
- Nokia: 5130, 5310, 5800, 7610, E63, E75, N91, N95
- Samsung: Galaxy S III
- Others: HTC Android / Desire / Hero / Incredible, Palm Pre, Palm Pixi, Palm Treo PRO 850, Garmin Nuvifone, T-Mobile Danger Sidekick 2007/2008/2009, Microsoft Xbox 360,Nokia 5310 XpressMusic, Sharp (Sidekick Sidekick 2008 / Sidekick LX, Nextel i856, HP 6315/ Compaq iPAQ 6300...
source: kV Connection Mobile Device Cables and Adapters Selection Guide
iPhone Headphone Audio Adapter 3.5mm
The iPhone Headphone Adapter solves the incompatibility issue between 1/8-inch (3.5mm) headphone connectors and the iPhone's recessed headphone jack. The adapter fits correctly and snugly into the iPhone to facilitate the use of existing headphones without any modification or loss of sound.
I got my earphones designed for iphones to work by swaping the ground and mic wires over.
Hey guys I got my earphones designed for iphones to work by swaping the ground and mic wires over.
The normal TRRS connectors have Tip/Ring/Ring/Sleave which translates into something like this: Left/Right/Mic/Ground.
Apple being so innovative swapped mic and ground to something like this: Right/Left/Ground/Mic.
So you can get a cable to swap the ground and mic over but the one I bought on ebay didnt work. This is because the female jack was a 3 point not 4 point. You need to make sure the converter is 4 pin male to 4 point female with the mic and ground swapped over.
source: http://www.modaco.com/topic/320260-4-pin-jack-converter/
With Bias Voltage (standard TRS for typical PC microphones)
2 or 3 conductors coming from it, if its got 3 one of the lines is bias voltage - couple of diagrams:
With Bias Voltage (standard TRS for typical PC microphones)
Without Bias Voltage (these are usually used in cell phone headsets so they can use a TRRS connector to carry both the microphone and earpiece audio)
In the image above, refer to the microphone female TRS connector (lower lefthand) for the proper wiring, the TRRS connector on the right is the jack as found on iphones and other smartphones.
notice that the bias voltage line is shorted to input signal in this case, I'm not sure what effect that has on microphones requiring a seperate bias voltage input, I'm doing a similar mod but I fully intend to keep my headset to a series of interchangable cables (1 single cable with a Y split for headset use, and another cable going to a single TRS for normal headphone use.)
here is another useful diagram:
This is the exact opposite direction of the diagram above, its going from a TRRS female connector to a pair of male TRS onnectors for PC use.
see diagrams at source: http://www.overclock.net/t/1129283/microphone-uses-left-or-right-channel-in-3-5mm-plug
