LG KU950 - Page 44

3. TECHNICAL BRIEF
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3.10.2.3. 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.
KU950’s USB interface uses the PM6650 internal logic for USB Transceiver.
Table. USB signal interface
Name Note
USB_RCV Rx_Data to MSM
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
Figure. Schematic of USB block (MSM6275 Side & PM6650 Side)
Figure. USB Interface
P16
M23
UART1_DP_RX_DATA_GPIO96
L26
UART1_DP_TX_DATA_GPIO95 UART2_CTS_N_GPIO90
G6
E4
UART2_DP_TX_DATA_GPIO88
F4
UART2_RFR_N_GPIO91
L23
UART3_CTS_N_GPIO86 UART3_DP_RX_DATA_GPIO85
M21 M19
UART3_DP_TX_DATA_GPIO84 UART1_CTS_N_GPIO97 GPIO64
F14
F7
GPIO39
D6
GPIO40 GPIO42
D7 D8
GPIO44
UART_TXD
UART_RXD
PS_HOLD
PM_INT_N
USIM_DATA
USIM_RST_N
USIM_CLK
PM_SBCK
PM_SBDT
PM_SBST
MSM6275 PM6650
MMI
Connector
USB_D-
USB_D+
USB_VBUS
USB_SE0
USB_DAT
USB_OE_N
R609
47K
R610 10K
4.7u
C621
28
VREG_PA
20
USB_D_M
21
GP1_DRV_N(MPP7)
22
LCD_DRV_N
23
KPD_DRV_N KPDPWR_N
24 25
VIB_DRV_N
26
RUIM_IO(MPP12)
27
VSW_PA
13
USB_OE_N
14
VSW_5V
15
USB_CTL_N
16
USB_VBUS
17
USB_DAT
18
USB_D_P
USB_SE0
19
USB_ID
11
12
VREG_5V
+VPWR
C622
1u
USB_VBUS
D602
RB521S-30
USB_CNT_N
USB_DAT
USB_OE_N
USIM_P_DATA
MOTOR_PWR-
PM_ON_SW_N
KYPD_LED_EN
USB_D-
USB_SE0
USB_D+
MSM6275_USB Block PM6650_USB Block