Usb Interface; Application Guide - SimCom SIM5320AL User Manual

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Note: Refer to document [21] for detailed information of Keypad Application Note.
3.8

USB Interface

SIM5320AL 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 20: Electronic characteristic
Pin name Pin No.
USB_VBUS 11
USB_DP 13
USB_DM 12
3.8.1

Application Guide

Currently SIM5320AL supports the USB suspend and resume mechanism which can help to save power.
If no transaction is on USB bus, SIM5320AL will enter suspend mode. When some events such as voice
call or receiving SMS happen, SIM5320AL will resume normal mode automatically.
Because of high bit rate on USB bus, pay attention to influence of junction capacitance of ESD component
SIM5320AL_User Manual_V1.01
GPIO15
Input voltage scope( V )
Min Typ
4.4 5.0
They are compliant with the USB 2.0 specification.
Figure 27: USB interface
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5.25
2014-08-20