Datasheet

80
A/T89C51CC01
4129N–CAN–03/08
Figure 43. CAN Controller Block Diagram
CAN Controller Mailbox
and Registers
Organization
The pagination allows management of the 321 registers including 300(15x20) Bytes of
mailbox via 34 SFR’s.
All actions on the message object window SFRs apply to the corresponding message
object registers pointed by the message object number find in the Page message object
register (CANPAGE) as illustrate in Figure 44.
Bit
Stuffing /Destuffing
Cyclic
Redundancy Check
Receive Transmit
Error
Counter
Rec/Tec
Bit
Timing
Logic
Page
Register
DPR(Mailbox + Registers)
Priority
Encoder
µC-Core Interface
Core
Control
Interface
Bus
TxDC
RxDC