TC35681IFTG datasheet(21/84 Pages) TOSHIBA

21 / 84 page

TC35681IFTG-002

21 / 84

2018-10-03

Preliminary

CONFIDENTIAL

3.2. System Configuration and Operating Mode

TC35681 supports two system configurations and three operating modes, as shown in Figure 3-3.



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 TC35681 using a user application program (User-App mode)

Following 2 methods are available to download a user application program;



Download from an external EEPROM



Download via the UART interface

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

Figure 3-3 Example of system configuration of TC35681

Host CPU

TC35681

HCI or TCU

Commands

UART

■

User-App mode

Controlled by a user application program in an external EEPROM,

or a Host CPU.

■

HCI mode/Complete mode

Controlled by a host CPU.

TC35681

CPU

RAM

ROM

External

EEPROM

Host CPU

TC35681IFTG Datasheet(PDF) 21 Page - Toshiba Semiconductor

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