Fujitsu D3231-S - Page 35

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TechNotes D323x-S_D3243-S V1.2 Page 35 of 98 http://www.fujitsu.com/fts/products/computing/pc/accessories/mainboards
mainboards
Interfaces & Connectors
Rear Audio / Frontpanel Audio Connector [New]
Rear Audio Connectors
Pin
Signal
A
Line input
Pin
Signal
A
Headphone output
Pin
Signal
A
Microphone input
Electrical input characteristics
Line: Stereo max. 1,2Vrms (Gain=0dB) input voltage
Microphone: Supports electret microphones with 1,3V
rms
(Gain=0dB) or 0,13V
rms
(Gain=20dB)
Electrical output characteristics
Headphone: Stereo max. 1,2 Vrms output voltage at 32Ohm load
System Speaker (via frontpanel connector): Mono, typ. 2W (RMS) at 4Ohm load
Mute Topology
When an outPut device (HeadPhone, HifiAmp...) is attached to an output jack, the following mute topology is required:
 FrontOut mutes RearOut and MonoOut  RearOut mutes MonoOut (frontpanel system speaker)
Remark: System beeps are only audible via the internal (frontpanel) system speaker. System beeps are also audible on the internal speaker if an external
device is plugged in.
Line IN (light blue)
Pin A
Headphone OUT (lime)
Pin A
Microphone IN (pink)
Pin A