Analog wired Headset
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== Neo 1973 == | == Neo 1973 == | ||
− | Pinout: [http://lists.openmoko.org/pipermail/community/2008-March/ | + | Pinout: [http://lists.openmoko.org/pipermail/community/2008-March/013792.html] |
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Revision as of 14:52, 26 August 2008
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.
Neo FreeRunner
ring
1(base): GND
2: left out
3: right out
4(tip): mic + HOLD-button(press:short to GND)
Neo 1973
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)