LG HB620 Service Manual page 62

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 2.0. Therefore, by definition, the USB interface is also compliant as a peripheral with the USB
Specification, Revision 2.0. The USB Specification Revision 2.0 defines three speeds of operation,
namely low-speed (1.5 Mbps) and full-speed (12 Mbps), and hi-speed(480Mbps). HB620T supports
low-speed and full-speed.
Name
USB_DAT
USB_SE0
USB_OE_N
USB_VBUS
USB_D+
USB_D-
[Fig. 3.20] Schematic of USB block(MSM6280 Side & PM6650 Side)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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 3.9] USB Signal Interface
USB_VBUS
R409
C424
47K
4.7u
- 63 -
3. TECHNICAL BRIEF
USB_OE_N
USB_CTL_N
USB_DAT
USB_D+
USB_SE0
USB_D-
11
USB_ID
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(MPP7)
LGE Internal Use Only