Headset

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== Audio quality ==
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You probably want to fix mixer settings to overcome the poor low-frequency output, see [[Freerunner Hardware Issues#Known.2FAccepted_Issues|Freerunner Hardware Issues]] for instructions.
  
 
==Test Scope==
 
==Test Scope==

Revision as of 20:36, 16 August 2008

Contents

Pinout

There's a four-ring 2.5mm stereo jack which provides connectivity to old-fashioned wired headsets.

The headsets used by Motorola smartphones (A780,A1200, ...) and the V-360 have a compatible configuration.

Pinout: [1]

base = ground 
speaker left  (internal impedance 33R) to ground. (+jackinsert detection)
speaker right (internal impedance 33R) to ground.
tip = mic electret condenser type, to ground. 
      bias (power for mic) 2K2 from +3.3v(wolfson codec) 
      (+HoldButton shortcircuit to ground)

Known working adapters

Tester Product Seller Used with
TimoJyrinki MP35A pc-mobile.net  Koss KSC-35 headphones, Altec Lansing inMotion iM4 speakers and car audio via AUX - all work great.

Audio quality

You probably want to fix mixer settings to overcome the poor low-frequency output, see Freerunner Hardware Issues for instructions.

Test Scope

To test Headset functionality

Test Duration

Test Environment

  1. Neo FreeRunner plus April Software Update
  2. FIC GTA02 battery
  3. SIM card
  4. Headset AP

Test Cases

Test Case #1

Personal tools

Pinout

There's a four-ring 2.5mm stereo jack which provides connectivity to old-fashioned wired headsets.

The headsets used by Motorola smartphones (A780,A1200, ...) and the V-360 have a compatible configuration.

Pinout: [1]

base = ground 
speaker left  (internal impedance 33R) to ground. (+jackinsert detection)
speaker right (internal impedance 33R) to ground.
tip = mic electret condenser type, to ground. 
      bias (power for mic) 2K2 from +3.3v(wolfson codec) 
      (+HoldButton shortcircuit to ground)

Known working adapters

Tester Product Seller Used with
TimoJyrinki MP35A pc-mobile.net  Koss KSC-35 headphones, Altec Lansing inMotion iM4 speakers and car audio via AUX - all work great.

Test Scope

To test Headset functionality

Test Duration

Test Environment

  1. Neo FreeRunner plus April Software Update
  2. FIC GTA02 battery
  3. SIM card
  4. Headset AP

Test Cases

Test Case #1