TC35680FSG datasheet(22/91 Pages) TOSHIBA

22 / 91 page

TC35680FSG-002/TC35681FSG-002

2019-04-04

3.2. System Configuration and Operating Mode

TC35680/TC35681 support two system configurations and three operating modes, as shown in Figure 3-4.



System configuration



Configuration that this device is controlled by an external host CPU (Host-controlled system)



Configuration that this device is controlled by its own CPU using a user application program (Standalone system)



Operating mode



Controlled by HCI/Extended HCI commands in the Host-controlled system (HCI mode).



Controlled by TCU commands in the Host-controlled system (Complete mode).



Controlled by the built-in CPU in TC35680 or TC35681 using a user application program (User-App mode)

Following 3 methods are available to download a user application program;



Download from the built-in Flash memory (TC35680)



Download from an external EEPROM (TC35681)



Download via the UART interface (TC35680/TC35681)

For the details of the selection of the operating mode, refer to Section 3.4.

Figure 3-4 Example of system configuration of TC35680/TC35681

Host CPU

TC35680/

TC35681

HCI or TCU

Commands

UART

■

User-App mode

Controlled by a user application program in the built-in Flash ROM,

an external EEPROM, or a Host CPU.

■

HCI mode/Complete mode

Controlled by a host CPU.

TC35680/TC35681

CPU

RAM

ROM

Built-in Flash

memory

(TC35681)

(TC35680)

(TC35680/

TC35681)

External

EEPROM

Host CPU

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