AN1105 STMicroelectronics, AN1105 Datasheet - Page 14

• Manufacturer Part Number: AN1105
• Description: ST7 PCAN PERIPHERAL DRIVER
• Manufacturer: STMicroelectronics

ST7 pCAN PERIPHERAL DRIVER
Any event (successful transmission, data reception, error, state change, overrun) can gen-
erate a maskable interrupt. The Interrupt Control Register (see datasheet p.112) allows you to
set/reset these masks. Note that each buffer has its own reception interrupt, allowing the data
to be saved rapidly.
Note: For further, more detailed explanations, please read the ST72511R/ST72512R/ST72532R Datash-
eet, downloadable from the ST web site, http://mcu.st.com.
Figure 9. ST7 pCAN State Diagram
RESET
RUN & WKPS
Standby
RUN
Wake-up Pulse
RUN
& WKPS
Generation
RUN
Resynchronisation
FSYN & BusOFF & 11 Recessive bits or...
(FSYN | BusOFF) & 128*11 Recessive bits
Idle
Start of frame
TX OK
RX OK
Reception
Transmission
Arbitration lost
RX Error
TX Error
BusOFF
Error
BusOFF
14/100