Classifying Can Controller Registers - Fujitsu MB90420/5 (A) Series Hardware Manual

CAN CONTROLLER

23.6 Classifying CAN Controller Registers

There are three types of CAN controller registers:
• Overall control registers
• Message buffer control registers
• Message buffers
n Overall control registers
The overall control registers are the following four registers:
• Control status register (CSR)
• Last event indicator register (LEIR)
• Receive and transmit error counter (RTEC)
• Bit timing register (BTR)
n Message buffer control registers
The message buffer control registers are the following 14 registers:
• Message buffer enable register (BVALR)
• IDE register (IDER)
• Transmit request register (TREQR)
• Transmit RTR register (TRTRR)
• Remote frame receiving wait register (RFWTR)
• Transmission cancel register (TCANR)
• Transmission complete register (TCR)
• Transmission interrupt enable register (TIER)
• Reception complete register (RCR)
• Remote request receive register (RRTRR)
• Receive overrun register (ROVRR)
• Reception interrupt enable register (RIER)
• Acceptance mask select register (AMSR)
• Acceptance mask registers 0 and 1 (AMR0 and AMR1)
n Message buffers
The message buffers are the following three registers:
• ID register x (x = 0 to 15) (IDRx)
• DLC register x (x = 0 to 15) (DLCRx)
• Data register x (x = 0 to 15) (DTRx)
n CAN WAKE UP control register
The CAN WAKE UP control register includes the following:
• CAN WAKE UP control register (CWUCR)
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