Specifications

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2.6 USB
This chapter describes about detailed specifications of the USB.
2.6.1 Basic Specifications
Switching USB
• Switching between USB Client and USB Host is carried out by following electric signals.
- Signal occurred by the USB cable (for USB Client/Host)
- Signal occurred by the cradle
This cannot be performed in application.
• Don’t switch during USB communicating and while USB device is connected and the terminal
is recognizing the USB device.
• It is possible to check the current status of USB Client/Host by USB Connection applet.
• You can select preferential connection (USB cable or cradle) by USB Connection applet.
Preferential connection works when USB cable is connected to the terminal and terminal is on
the cradle. (See 3.26 USB Connection for its detail.)
Figure 2.10
Table 2.56 In case connection by USB cable is set as preferential USB connection
Terminal
Cradle
Any USB device is not
connected
USB device is connected
to USB Client connector
USB device is connected
to USB Host connector
Any USB device is not connected No USB connection Connection by USB cable
(USB Client) is effective
Connection by USB cable
(USB Host) is effective
USB device is connected to USB
Client connector and selector
switch is set to "B" position
Connection by cradle
(USB Client) is effective
Connection by USB cable
(USB Client) is effective
Connection by USB cable
(USB Host) is effective
USB device is connected to USB
Host connector and selector
switch is set to "A" position
Connection by cradle
(USB Host) is effective
Connection by USB cable
(USB Client) is effective
Connection by USB cable
(USB Host) is effective
Notes:
• If USB cable is connected to the terminal when connection by cradle has been established,
connection by cradle will be disconnected and connection by USB cable will be established.