LG KS20 Operating Instructions Manual page 48

3. TECHNICAL BRIEF
B. the others
• TRK_LO_ADJ : TCXO(19.2M) Control
• PA_ON0/PA_RANGE0 : WCDMA(2100) TX Power Amp Enable
• ANT_SEL[0-2] : Ant Switch Module Mode Selection(WCDMA,GSM Tx/Rx,DCS-PCS Tx/Rx)
• GSM_PA_BAND : GSM/DCS-PCS Band Selection of Power Amp
• GSM_PA_RAMP : Power Amp Gain Control of APC_IC
• GSM_PA_EN : Power Amp Gain Control Enable of APC_IC
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