LG U310 Service Manual page 44

3.10.2.3. USB
efficient interconnect between the mobile phone and a personal computer (PC). The USB interface of the
MSM6250A was designed to comply with the definition of a peripheral as specified in USB Specification,
Revision 1.1. Therefore, by definition, the USB interface is also compliant as a peripheral with the USB
Specification, Revision 2.0. The USB Specification Revision 1.1 defines two speeds of operation, namely
low-speed (1.5 Mbps) and full-speed (12 Mbps), both of which are supported by the MSM6250A. U880's
USB interface uses the PM6650-2M internal logic for USB Transceiver.
Name
USB_RCV
USB_DAT
USB_SE0
USB_OE_N
USB_VBUS
USB_D+
USB_D-
MSM6250A
MSM6250A_USB Block
USIM PMIC USB
Figure. Schematic of USB block(MSM6250 Side & PM6650 Side)
Note
Rx_Data to MSM
Data to/from MSM
Data to/from MSM
Out-Put Enable of Transceiver
USB_Power From Host(PC)
USB Data+ to Host
USB Data- to Host
Table. USB Signal Interface
USB_OE_N
USB_DAT
USB_SE0
Figure. SIM Interface
MicroSD
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3. TECHNICAL BRIEF
USB_VBUS
USB_D+
PM6650-2M
USB_D-
PM6650-2M_USB Block
USB_OE_N
USB_CNT_N
USB_DAT
USB_D+
USB_SE0
USB_D-
VBAT_TEMP
IO
Connector
1u
VREG_5V
13
USB_OE_N
14
VSW_5V
15
USB_CTL_N
16
USB_VBUS
17
USB_DAT
18
USB_D_P
19
USB_SE0
20
USB_D_M
21
GP1_DRV_N(MPP7)