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3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3.11.2.3. USB
The MSM7200 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
MSM7200 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 MSM7200.
Name Note
MSM_USB1_VM Data to/from MSM
MSM_USB1_VP Data to/from MSM
nUSB_OE1 Out-Put Enable of Transceiver
VUSB_5.0V USB_Power From Host(PC)
CRADLE_USB_DP USB Data+ to Host
CRADLE_USB_DN USB Data- to Host
[Table 1.6] USB Signal Interface
[Figure1.17] USB block(MSM7200 Side & PM7540 Side)
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