LG KE990 Service Manual - Page 44
H/W Sub System
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3. TECHNICAL BRIEF 3.9 H/W Sub System 3.9.1 RF Interface A. RTR6235(WCDMA_Tx, GSM_Tx/Rx) ESM6270 controls RF part(RTR6235) using these signals. • SBST : SSBI I/F signals for control Sub-chipset • PA_ON1 : 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 ESM Tx data DACs PA_ON1_GPIO2 D5 GRFC9_GPIO12 J21 CAMCLK_PO_GP_MN_GPIO13 A6 GPIO28 N19 USB_RX_DATA_GPIO29 XMEM2_CS_N2_GPIO35 W15 XMEM2_CS_N3_GPIO36 AA15 AE13 LCD_EN_GPIO37 GPIO43 H9 B6 SYNTH2_GPIO65 F8 GPIO66 AA1 XMEM1_CS_N1_GPIO76 Y6 XMEM1_CS_N3_SDRAM1_CS_N1_GPIO77 L25 UART3_RFR_N_GPIO87 H6 UART2_DP_RX_DATA_GPIO89 F18 SYNTH0_GP_PDM0_GPIO92 SBST1_GPIO93 H18 R215 0 TX_AGC_ADJ H13 L13 TRK_LO_ADJ TCXO_EN_GPIO94 F19 F17 PA_ON0 A12 Q_OUT_N B12 Q_OUT A13 I_OUT_N B13 I_OUT F12 DAC_REF Q_IM_CH1 Q_IP_CH1 I_IM_CH1 I_IP_CH1 Q_IM_CH0 Q_IP_CH0 I_IM_CH0 I_IP_CH0 W23 V23 V25 W25 AA25 Y25 AB25 AC25 GP_PDM2_PA_RAN_GE1 D17 GP_PDM1_PA_RAN_GE0 H17 TRST_N H15 D16 TCK F15 TMS D15 TDI A17 TDO H16 RTCK K19 AUX_PCM_CLK_GRFC14_GPIO80 N21 AUX_PCM_DIN_GRFC13_GPIO14 AUX_PCM_DOUT_GRFC12_GPIO103 G4 AUX_PCM_SYNC_GRFC11_GPIO102 J8 H12 TX_ON_GRFC10 B4 GRFC8_GPIO11 T23 GRFC7_GPIO10 T19 GRFX6_GPIO9 D11 GRFC5_AUX_SBST_GPIO8 H10 GRFC4_AUX_SBCK_GPIO7 F10 GRFC3_GPIO6 GRFC2_GPIO5 D9 A8 GRFC1_AUX_SBDT_GPIO4 B8 GRFC0_GPIO3 G23 BT_CLK_GPIO25 F23 BT_SBST_GPIO24 E26 BT_SBCK_GPIO23 E25 BT_SBDT_GPIO22 H21 BT_TX_RX_N_GPIO21 R19 BT_DATA_GPIO20 LIN_INVERTER LIN_MOTOR_EN LCD_IF_MODE USB_SELECT_N CAM_MODE3_N LCD_LDO_EN MICROSD_DETECT HOOK_SENSE_N RMT_INT HP_AMP_EN LCD_RESET_N MMP_INT_N TCXO_EN TX_QM TX_QP TX_IM TX_IP DAC_REF R211 2K C223 33nF TRK_LO_ADJ RX_QM RX_QP RX_IM RX_IP LIN_PWM_MAG JTAG_TRST_N JTAG_TCK JTAG_TMS JTAG_TDI JTAG_TDO JTAG_RTCK MMP_HPCM_CLK MMP_HPCM_DI MMP_HPCM_DO MMP_HPCM_FSYNC TX_ON ANT_SEL1 ANT_SEL0 CAM_MODE1_N FM_INTX FM_BUSEN BT_CLK BT_SBST BT_SBCK BT_SBDT BT_TX_RX_N BT_DATA R213 NA GSM_PA_BAND GSM_PA_EN Figure. Schematic of RF Interface of ESM6270 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 45 - LGE Internal Use Only
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