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SIM5360_Hardware Design_V1.06
2016-11-17
40
3.10
USB Interface
SIM5360 module contains a USB interface. This interface is compliant with the USB2.0 specification. The
USB2.0 specification requires hosts such as the computer to support all three USB speeds, namely
low-speed (1.5Mbps), full-speed (12Mbps) and high-speed (480Mbps). USB charging and USB-OTG is
not supported.
Table 21: Electronic characteristic
Pin name
Pin No.
Input voltage scope( V )
Min
Typ
Max
USB_VBUS
11
3
5.0
5.25
USB_DP
13
They are compliant with the USB 2.0 specification.
USB_DN
12
3.10.1
Application Guide
Currently SIM5360 supports the USB suspend and resume mechanism which can help to save power. If
no transaction is on USB bus, SIM5360 will enter suspend mode. When some events such as voice call or
receiving SMS happen, SIM5360 will resume normal mode automatically.
USB_VBUS
USB_DN
USB_DP
GND
MODULE
HOST
USB port
USB port
VBUS
D-
D+
GND
TVS
TVS
22 OHM
Figure 26: USB interface
Because of high bit rate on USB bus, pay attention to influence of junction capacitance of ESD component
on USB data lines. Typically, the capacitance should be less than
4pF @1MHz.
It is recommended to use an ESD protection component such as ON SEMI (
ESD9M5.0ST5G or ESD9L5.0ST5G.
Note
:
The SIM5360 has two kinds of interface (UART and USB) to connect to host CPU. USB
interface is mapped to five virtual ports: “SIMTECH HS-USB Modem 9000”, “SIMTECH HS-USB
NMEA 9000”, “SIMTECH HS-USB AT port 9000”, “SIMTECH HS-USB Diagnostics 9000” and
“SIMTECH Wireless HS-USB Ethernet Adapter 9000”.
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