TC35680FSG datasheet(24/91 Pages) TOSHIBA

24 / 91 page

TC35680FSG-002/TC35681FSG-002

2019-04-04

3.4. Selection and Setting of Operating Mode

The following two methods are available to set an operating mode.



Setting is done by the status of the GPIO1 and SWDIO pins at start-up



Setting is done by the HCI_SET_MODE command after start-up in the HCI mode. (The Complete mode or the User-App

mode can be selected.)

Table 3-1 shows the application of each operating mode and its setting at start-up.

When the User-App mode is selected at start-up, it is not possible to switch directly to the HCI mode. A restart (a hardware reset

assertion) is necessary to switch from the User-App mode or the Complete mode to another operating mode.

Table 3-1 Application of each operating mode and its setting at start-up

Operating mode

Setting at start-up

Application

GPIO1

SWDIO

User-App mode

—



Execution of a user application program

HCI mode



RF test



Radio Frequency (RF) Certification test



Bluetooth® Qualification test



Programming of a user application program (firmware)



Control by HCI/Extended HCI commands

Complete mode



Device control by TCU commands

(Control commands in the GATT/SM layer)

Test mode

This setting is prohibited.

Note: The built-in firmware assigns the input function with the pull-up resistor ON to the GPIO1 pin at start-up. So, when the pin is open

at start-up, the User-App mode is selected. When the setting pins are pulled down with external resistors, respectively, the values

of the resistors should be sufficiently lower than the values of the internal pull-up resistors.

1 kΩ, for example, is OK.

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