Enabler II-G Assiste GPS Integration Guide - Farnell
Enabler II-G Assiste GPS Integration Guide - Farnell
Enabler II-G Assiste GPS Integration Guide - Farnell
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Enfora <strong>Enabler</strong> <strong>II</strong>I-G<br />
Modem <strong>Integration</strong> <strong>Guide</strong><br />
6.6.25. Headset Speaker Output Left & Right (Pins 57, 59)<br />
Pin Name Pin Number Signal Direction Description<br />
HSOL 57 O Headset Out 32Ω Speaker Left<br />
HSOR 59 O Headset Out 32Ω Speaker Right<br />
HSOVMID 61 I Headset Out pseudo ground return<br />
The left and right headset amplifiers provide the stereo signal on terminals HSOL and HSOR. A pseudo<br />
ground is provided on terminal HSOVMID to eliminate external capacitors. The mono audio signal can be<br />
provided on the Right or the Right and Left headset outputs. HSOVMID is available to allow integrators to<br />
supply a bias or DC offset to increase the dynamic range of the Headset.<br />
Headset Spkr Output Parameter/Conditions Min Typ Max Units<br />
Maximum Swing Distortion ≤ 2% and 32 Ω, VSP<br />
input level = +3 dBm0<br />
1.6 1.96<br />
Distortion ≤ 2% and 32 Ω, I 2 VP-P<br />
S<br />
input level = +3 dBm0<br />
1.48 1.85<br />
Maximum Capacitive<br />
Load<br />
100 pF<br />
Minimum resistive load<br />
at HSOL and HSOR:<br />
Zload<br />
32 Ω<br />
Amplifier Gain -5 dB<br />
HSOL/R amplifier Power<br />
supply rejection<br />
1 kHz, 100 mVpp<br />
50 dB<br />
Amplifier State in Power<br />
Down<br />
High Z<br />
The left and right channels of the headset speaker output are a single ended output. An external audio<br />
amplifier should be used for loads of less than 32 Ω or if volume is inadequate.<br />
6.6.26. Headset Output Common Mode (Pin 61)<br />
The left and right headset amplifiers provide the stereo signal on terminals HSOL and HSOR. A pseudo<br />
ground is provided on terminal HSOVMID to eliminate external capacitors.<br />
HSOVMID Parameter/Conditions Min Typ Max Units<br />
Maximum Capacitor<br />
Load<br />
200 pF<br />
DC Level 1.2 1.35 1.5 V<br />
GSM0308PB001 58 Version 1.03– 7/17/2007
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