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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
3.11.2.2 UART Interface
UART signals are connected to MSM GPIO through IO connector with 115200 bps speed.
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.
GPIO_Map
Name
Note
GPIO_96
UART_RXD
Data_Rx
GPIO_95
UART_TXD
Data_Tx
Table. UART Interface
Name
Note
USB_DAT
Data to/from MSM
USB_SE0
Data to/from MSM
USB_OE_N
Out-Put Enable of Transceiver
USB_VBUS
USB_Power From Host(PC)
USB_D+
USB Data+ to Host
USB_D-
USB Data- to Host
Table. USB Signal Interface