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3. TECHNICAL BRIEF
3.11.2.2. 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.
Name
USB_RCV
USB_DAT
USB_SE0
USB_OE_N
USB_VBUS
USB_D+
USB_D-
Figure. Schematic of USB block(MSM6275 Side & PM6650 Side)
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_VBUS
USB_DAT
USB_D+
USB_SE0
USB_D-
R606
47K
C619
1u
- 50 -
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)
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Troubleshooting
