LG L601i Service Manual page 42

3.10.2.2. USB
The MSM6250A device contains a Universal Serial Bus (USB) interface to provide an 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 PM6650-2 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
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
PM6650-2
USB_SE0
Figure. SIM Interface
KYBD_BACKLIGHT
- 43 -
3. TECHNICAL BRIEF
USB_VBUS
USB_D+
USB_D-
PM6650-2_USB Block
13
USB_OE_N
14
15
16
17
USB_DAT
18
USB_D+
19
USB_SE0
20
USB_D-
21
2.2K R413
4.7u C431
1608
PM_ON_SW_N
MOTOR_PWR-
USIM_P_DATA
R415
+VPWR
10K
IO
Connector
VREG_5V
USB_OE_N
VSW_5V
USB_CTL_N
USB_VBUS
USB_DAT
USB_D_P
USB_SE0
USB_D_M
GP1_DRV_N(MPP7)