LG Electronics U250 service manual Usb, Table. USB Signal Interface

Models: U250

1 175
Download 175 pages 27.32 Kb
Page 54
Image 54

3. TECHNICAL BRIEF

3.11.2.3. USB

The MSM6245 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 MSM6245 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 MSM6245.

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

RFRUART2N GPIO91

CTSUART2N GPIO90

DPUART2TX DATA GPIO88

 

CTSUART3N GPIO86

DPUART3RX DATA GPIO85

DPUART3TX DATA GPIO84 GPIO40

GPIO42

DATUSBVP

SE0USBVM

TPOEUSBN

 

CMDMMCGPIO30

DATAMMCSDCC DAT0 GPIO32

CLKMMCSDCC CLK GPIO31

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

USB_OE_N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

USB_CTL_N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

USB_VBUS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F4

G6

E4

L23

M21

M19

D6

D7

N26

N23

N25

H14

L14

M16

 

USB_DAT

 

 

 

 

 

 

 

 

 

 

 

 

USB_D+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

USB_SE0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

USB_D-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R309

2.2K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C336

4.7u

 

 

USIM RST N

USIM DATA

 

 

 

 

PS HOLD

USB DAT

USB SE0

USB OE N

 

MMC CMD

 

1608

 

USIM CLK

 

 

 

PM INT N

 

MMC DATA

MMC CLK

 

 

 

 

 

12

VREG_5V

13

USB_OE_N

14

VSW_5V

15

USB_CTL_N

16

USB_VBUS

17

USB_DAT

18

USB_D_P

19

USB_SE0

20

USB_D_M

21

GP1_DRV_N(

LCD DRV N

22

Figure 1.17 Schematic of USB block(MSM6245 Side & PM6650 Side)

- 55 -

Page 54
Image 54
LG Electronics U250 service manual Usb, Table. USB Signal Interface

U250 specifications

The LG Electronics U250 is a distinguished device known for its cutting-edge features and innovative technologies within the mobile phone sector. Launched as part of LG's effort to cater to a growing demand for functional yet stylish smartphones, the U250 boasts an array of characteristics that appeal to a savvy clientele.

One of the primary features of the U250 is its impressive display. Sporting a vibrant screen that offers excellent color reproduction and clarity, it enhances the user experience for gaming and multimedia consumption. The responsive touchscreen interface allows for seamless navigation, making it user-friendly for all age groups.

The U250 is powered by a robust processor that ensures smooth performance, whether multitasking between applications or running demanding games. With ample RAM, it minimizes lag and enhances the overall operating experience, allowing users to switch effortlessly between tasks.

Photography enthusiasts will appreciate the U250's advanced camera system. It is equipped with a high-resolution primary camera that captures stunning images in various lighting conditions. The inclusion of features like autofocus and image stabilization significantly elevates the quality of photos and videos. Additionally, the front-facing camera is designed for high-quality selfies and video calls, ensuring that users can always stay connected.

The device supports a range of connectivity options, including 4G LTE, Bluetooth, and Wi-Fi, ensuring users can remain connected to the world around them. The integration of NFC technology also enables quick and convenient transactions, particularly useful in a cashless society.

Battery life is another standout characteristic of the U250. With a durable battery, it offers extended usage time, allowing users to go through their day without the constant worry of recharging. Coupled with fast-charging capabilities, it reduces downtime significantly.

The LG U250 runs on an intuitive operating system that provides easy access to a plethora of apps on the platform. Customization options are abundant, allowing users to tailor their device's appearance and functionality to suit their preferences.

In conclusion, the LG Electronics U250 combines striking design with versatile functionality, making it a formidable entry in the smartphone market. With its impressive display, powerful performance, advanced camera features, and strong battery life, the U250 is poised to meet the needs of modern users seeking both style and substance in a mobile device. Whether for work or leisure, this smartphone is designed to enhance everyday life.