Only For Training And Service Purposes - LG TU550 Service Manual

3.11.2.2. UART Interface
UART signals are connected to MSM GPIO through IO connector with 115200 bps speed.
GPIO_Map
GPIO_96
GPIO_95
3.11.2.3. USB
The MSM6275 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
MSM6275 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
MSM6275.
Name
USB_DAT
USB_SE0
USB_OE_N
USB_VBUS
USB_D+
USB_D-
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

Name
UART_RXD
UART_TXD
Table. UART Interface
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
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3. TECHNICAL BRIEF
Note
Data_Rx
Data_Tx
LGE Internal Use Only