Siemens HC15 Manuel d'utilisateur télécharger pdf (Page 8)

AN39: USB Interface Description

3 USB Interface Functionality

HC15_USB_Interface_v02 Page 8 of 28 2007-04-05

Confidential / Preliminary

3 USB Interface Functionality

HC15 supports a USB 2.0 Full Speed (12Mbit/s) device interface (see [2]) with the following

default configuration settings:

The USB interface can be configured non-volatile by means of AT command (see [1],

AT^SUSB).

Table 1: Default configuration settings for USB interface

Parameter Description Default Setting (Factory)

startup USB interface configuration at startup. Default set-

ting: "MdmNet" enumerated USB composite

device.

"MdmNet"

maxpow Maximum power consumption of the USB device

from the USB bus (in mA).

powsrc Power source for USB device is either bus or self

powered.

"SELF"

mnto Timeout for the communication device class

request (in ms).

10000

mswprot Write protection for mass storage device is either

enabled or disabled.

"Disabled"

msoe USB interface configuration on ejecting the module

enumerated as mass storage device. Default set-

ting: "MdmNet" enumerated USB composite

device.

"MdmNet"

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Siemens HC15 Manuel d'utilisateur Page 8