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3.11 H/W Sub System
3.11.1. RF Interface
A. RTR6275(WCDMA_Tx, GSM_Tx/Rx)
MSM6245 controls RF part(RTR6275) 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 MSM Tx data DACs
3. TECHNICAL BRIEF
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Figure 1.15 Schematic of RF Interface of MSM6245
Close to MSM
RF
XMEM1_CS_N3_SDRAM1_CS_N1_GPIO77
UART2_DP_RX_DATA_GPIO89
H6
UART3_RFR_N_GPIO87
L25
D16
TCK
F19
TCXO_EN_GPIO94
TDI
D15
A17
TDO
F15
TMS
L13
TRK_LO_ADJ
TRST_N
H15
TX_AGC_ADJ
H13
H12
TX_ON_GRFC10
SYNTH0_GP_PDM0_GPIO92
F18
H16
RTCK
H18
SBST1_GPIO93
F17
PA_ON0
Q_IM_CH0
AA25
W23
Q_IM_CH1
Q_IP_CH0
Y25
V23
Q_IP_CH1
Q_OUT
B12
Q_OUT_N
A12
I_IM_CH0
AB25
I_IM_CH1
V25
I_IP_CH0
AC25
I_IP_CH1
W25
B13
I_OUT
A13
I_OUT_N
D17
GRFC0_GPIO3
B8
GRFC1_AUX_SBDT_GPIO4
A8
GRFC2_GPIO5
D9
GRFC3_GPIO6
F10
H10
GRFC4_AUX_SBCK_GPIO7
GRFC5_AUX_SBST_GPIO8
D11
T23
GRFC7_GPIO10
GRFC8_GPIO11
B4
T19
GRFX6_GPIO9
GP_PDM1_PA_RAN_GE0
H17
GP_PDM2_PA_RAN_GE1
DAC_REF
F12
BT_DATA_GPIO20
BT_SBCK_GPIO23
E26
E25
BT_SBDT_GPIO22
BT_SBST_GPIO24
F23
H21
BT_TX_RX_N_GPIO21
K19
AUX_PCM_CLK_GRFC14_GPIO80
AUX_PCM_DIN_GRFC13_GPIO14
N21
G4
AUX_PCM_DOUT_GRFC12_GPIO103
J8
AUX_PCM_SYNC_GRFC11_GPIO102
BT_CLK_GPIO25
G23
R19
33nF C246
R2132K
TX_AGC_ADJ
PA_R0
RCV_EN_N
SPK_AMP_EN
GSM_PA_EN
GSM_PA_BAND
ANT_SEL1
ANT_SEL0
LCD_IF_MODE_1
RX_QM
RX_QP
RX_IM
RX_IP
PA_ON
TRK_LO_ADJ
TCXO_EN
TX_ON
BT_SBST
BT_SBCK
BT_TX_RX_N
BT_DATA
BT_SBDT
BT_CLK
DAC_REF
TX_QM
TX_QP
TX_IM
TX_IP