Datasheet

Figure 20-5. CAN controller structure
CAN channel
Gen. control
Gen. status
Enable MOb
Interrupt
Bit timing
Line error
CAN timer
LCC
MAC
PLS
Internal
TxCAN
Internal
RxCAN
Mailbox
Message objets
MOb0
MOb1
MOb2
MOb i
Control
Status
IDtag+IDmask
Time stamp
Control
Status
IDtag+IDmask
Time stamp
Control
Status
IDtag+IDmask
Time stamp
Control
Status
IDtag+IDmask
Time stamp
Buffer MOb0
Buffer MOb1
Buffer MOb2
Buffer MOb i
CAN data buffers
Size = 120 Bytes
Low priority
High priority
MOb
scanning
20.5. CAN channel
20.5.1. Configuration
The CAN channel can be in:
• Enabled mode
In this mode:
• the CAN channel (internal TxCAN & RxCAN) is enabled
• the input clock is enabled
• Standby mode
In standby mode:
• the transmitter constantly provides a recessive level (on internal TxCAN) and the receiver is
disabled
• input clock is enabled
• the registers and pages remain accessible
Atmel ATmega16M1/32M1/64M1 [DATASHEET]
Atmel-8209F-ATmega16M1/32M1/64M1_Datasheet_Complete-10/2016
230