Release 1.0
Technical Documentation 01/2006
TD_Repair_L3_SXG75_R1.0.pdf Page 26 of 73
79 1 SDRAM_A1(0) SDRAM interface.
80 3 PM_SBCK PM6650 serial port. MSM <> PM6650 communication.
81 3 PM_SBST PM6650 serial port. MSM <> PM6650 communication.
82 3 PM_SBDT PM6650 serial port. MSM <> PM6650 communication.
83 3 USB_RS232_SEL1 USB / UART select control. High for UART selection.
84 3 IRDA_TXD IrDA interface.
85 3 IRDA_RXD IrDA interface.
86 3 ACC_PWR_EN Accessory power supply enable. Active high.
87 3 FLASH_EN Accessory connector. Clip-on camera flash enable.
88 4 USIM_DATA SIM interface (PM6650 Buffer)
89 4 CAM1_SEL_N Camera bus switch. Enable for Mpix camera. Active low.
90 4 USIM_RST SIM interface (PM6650 Buffer)
91 4 USIM_CLK SIM interface (PM6650 Buffer)
92 3
HPH_SD
(Not used)
93 3 CAM2_SEL_N Camera bus switch. Enable for CIF camera. Active low.
94 3 TCXO_EN PM6650 interface. Enable for TCXO Controller.
95 3 MSM_UART1_TXD Accessory connector. Serial data out.
96 3 MSM_UART1_RXD Accessory connector. Serial data in.
97 3 MSM_UART1_CTS_N Accessory connector UART signal.
98 3
MSM6250 GPIO functions
The MSM6250 has additional dedicated lines for interfaces to the SDRAM, NAND FLASH, RF
system and USB functions.
Communication with the other major components of the Qualcomm chipset uses the following
synchronous serial ports:
Serial Bus Connects to ..
SBST_0, SBDT_0,
SBCK_0
RF System. RTR6250, RFR6250
PM_SBST, PM_SBDT,
PM_SBCK
Power Management. PM6650
BT_SBST, BT_SBDT,
BT_SBCK
Bluetooth. BCM2004
MSM6250 communication ports
Company Confidential
2006©BenQ
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