LG HB620 - Page 150

Control signal
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6. BLOCK DIAGRAM
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Only for training and service purposes
Control signal Description Comment
UMTS PA_CTL signal
PA _R1 UMTS Tx Hi gh/Low Power Control
PA _ON Power Amp. Enable
GSM PA_CTL signal
GSM_PA_BAND DCS or PCS /GSM Mode Selection
GSM_PA_EN Power Amp. Gain Control Enable
GSM_PA_RAMP Power Amp. Gain Control
RF Tranceiv er_CTL signal
TX_ON RF Enable Signal
SSBDT_RTR Bidirec tional SSBI Data
TX_AGC_ADJ Transmit Gain Control
FEM_CTL signal
ANT_SEL 0,1,2 Ant S witch Module Mod e Selection
UMTS,
GSM900Tx/Rx,
DCS Tx/Rx,
PCS Tx/Rx
UMTS
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