Only For Training And Service Purposes - LG L704I Service Manual

3.11.2.3. USB
The MSM6280 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
MSM6280 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 MSM6280.
Name
USB_DAT
USB_SE0
USB_OE_N
USB_VBUS
USB_D+
USB_D-
Figure. Schematic of USB block(MSM6280Side & PM6650 Side)
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

Note
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_DAT
USB_D+
USB_SE0
USB_D-
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3. TECHNICAL BRIEF
16
USB_VBUS
17
USB_DAT
18
USB_D_P
19
USB_SE0
20
USB_D_M
21
GP1_DRV_N(MPP7)
LGE Internal Use Only