Series Connection Mode - Fujitsu F2MC-8FX Series Application Note

3.5.2 Series Connection Mode

.5.2 Series Connection Mode
Out
Up
board
In series connection mode, main board and down board work as master and slave
simultaneously, while up board only works as master.
After the Send key on up board is pressed, the ADC value is sent to main board.
The Main board judges whether its address matches with the first data sent by up
board.
If the received address matches with the address of main board, the main board
sends ACK to up board.
Up board enters into sleep mode.
Main board saves the data received from up board.
When the Send key on main board is pressed, main board sends the saved data to
down board.
Down board judges whether its address matches with the address sent by main board.
If down board address match with its' received address, down board sends ACK to
main board.
Main board enters into sleep mode.
Down board saves the received data.
When the Send key on down board is pressed, down board sends the saved data to
EEPROM.
Down board enters into sleep mode.
Note: for the master jumper setting please refer following:
Up board ---------- GND
Main board --------GND
Down board ------- IIC
MB2146-460-E Setup Guide V1.2
Chapter 3 EV-board Manual
In
GND
Main
board
Figure 3-9: Series Mode
MCU-AN-500083-E-12 – Page 22
In
Out
Down
board