LG KF690 Service Manual page 42

USB
The ESM6270 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
ESM6270 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 ESM6270.
Name
USB_DAT
USB_SE0
USB_OE_N
USB_VBUS
USB_D+
USB_D-
[Fig. 3.15] Schematic of USB block(ESM6270 Side & PM6635 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 3.6] USB Signal Interface
USB_VBUS
C426
R412
4.7u 47K
- 43 -
3. TECHNICAL BRIEF
USB_ID
12
VREG_5V
13
USB_OE_N USB_OE_N
14
VSW_5V
15
USB_CNT_N USB_CTL_N
16
USB_VBUS
17
USB_DAT USB_DAT
18
USB_D+ USB_D_P
19
USB_SE0 USB_SE0
20
USB_D- USB_D_M
21
GP1_DRV_N_MPP7
LGE Internal Use Only