Headset
From Openmoko
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TimoJyrinki (Talk | contribs) (added test report of known to be working adapter) |
TimoJyrinki (Talk | contribs) (add a note about the improving the low-frequency output) |
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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 21:36, 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
- Neo FreeRunner plus April Software Update
- FIC GTA02 battery
- SIM card
- Headset AP
