LG KF700Q Service Manual page 53

3. TECHNICAL BRIEF
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 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
MSM6280.
Name
USB_DAT
USB_SE0
USB_OE_N
USB_VBUS
USB_D+
USB_D-
PM6558
+5V_PWR
SDB1040
D401
USB_VBUS
R404
USB_DET
Rev.C
36K
R407
56K
[Fig. 3.17] Schematic of USB block(MSM6280 Side & PM6658 Side)
LGE Internal Use Only
Note
Data to/from ESM
Data to/from ESM
Out-Put Enable of Transceiver
USB_Power From Host(PC)
USB Data+ to Host
USB Data- to Host
[Table 3.7] USB Signal Interface
C401 2.2u
R401 47K
ICHARGEOUT
Route with Thick Line ( +VPWR)
VBATT
BATT_FET_N
R403
VBACK_UP
C402
Q401
VSW_MSMC
SI1072X
VREG_MSMC
VSW_S2
VREG_S2
VSW_S3
VREG_S3
H2
USB_ID
J2
USB_D_P USB_D+
J1
USB_D_M USB_D-
F4
USB_OE_N USB_OE_N
G4
USB_DAT USB_DAT
H4
USB_SE0 USB_SE0
D5
MPP11 USIM_DATA
H5
MPP12 USIM_P_DATA
D6
MPP9 USIM_CLK
H6
MPP10 USIM_P_CLK
D7
MPP5 USIM_RST_N
H7
MPP6 USIM_P_RST_N
- 54 -
MSM6280
U402
C1
VCHG
TP401 C2
CHG_CTL_N
TP402
D1
ISNS_M
TP403 D2
ISNS_P
E1
VBAT
E2
BAT_FET_N
F2
USB_OVP_G
1K
J10
VCOIN
H1
USB_VBUS
0.1u
F1
VSW_5V
G1
VREG_5V
K5
VSW_MSMC
K4
VREG_MSMC
K7
VSW_S2
L8
VREG_S2
K6
VSW_S3
L6
VREG_S3
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes