H/W Sub System - LG CT815 Service Manual

3. TECHNICAL BRIEF

3.12 H/W Sub System

3.12.1 RF Interface
A. RTR6285 (WCDMA_Tx, GSM_Tx/Rx)
MSM7201A controls RF part(RTR6285) using these signals.
■ SSBDT : SSBI I/F signals for control Sub-chipset
■ TX_ON : Power AMP on RF part
■ RX0_I/Q_M/P,TX_I/Q_M/P : I/Q for T/Rx of RF
■ TX_AGC_ADJ : control the gain of the Tx signal prior to the power amplifier
■ DAC_REF : Reference input to the MSM Tx data DACs
LGE Internal Use Only
Figure. Block Diagram of RF Interface
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