Only For Training And Service Purposes - LG KS10 Service Manual

3. TECHNICAL BRIEF
3.12.2.3. 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. KS10's USB interface uses the PM6650 internal logic for USB Transceiver.
Name
USB_RCV
USB_DAT
USB_SE0
USB_OE_N
USB_VBUS
USB_D+
USB_D-
MSM6275
MSM6275_USB Block
Figure. Schematic of USB block (MSM6275 Side & PM6650 Side)
LGE Internal Use Only
Note
Rx_Data to MSM
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_OE_
N
USB_DAT
PM6650
USB_SE0
Figure. USB Interface
USB_VBUS
RB521S-30
Power Line --> Route carefully!!!!!
Draw the Artwork_line thickly !!!!!
--->> USB_VBUS , FLASH_DRV_N , KPD_DRV_N , KEY_ON_SW_N , MOT_PWR-
- 54 -
USB_VBU
S
USB_D+
USB_D-
PM6650_USB Block
USB_OE_N
D701 USB_CTL_N
USB_DAT
MSM_USB_D+
USB_SE0
MSM_USB_D-
47K R710
1u C732
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

MMI
Connector
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(MPP7)
+VPWR
100K