AT89C51CC03U-S3SIM ATMEL [ATMEL Corporation], AT89C51CC03U-S3SIM Datasheet - Page 100

• Manufacturer Part Number: AT89C51CC03U-S3SIM
• Description: Enhanced 8-bit MCU with CAN Controller and Flash Memory
• Manufacturer: ATMEL [ATMEL Corporation]

Acceptance Filter
100
AT89C51CC03
Upon a reception hit (i.e., a good comparison between the ID+RTR+RB+IDE received
and an ID+RTR+RB+IDE specified while taking the comparison mask into account) the
ID+RTR+RB+IDE received are written over the ID TAG Registers.
ID => IDT0-29
RTR => RTRTAG
RB => RB0-1TAG
IDE => IDE in CANCONCH register
Figure 54. Acceptance filter block diagram
RxDC
example:
To accept only ID = 318h in part A.
ID MSK = 111 1111 1111 b
ID TAG = 011 0001 1000 b
ID TAG Registers (Ch i) and CanConch
CAN SFRs
Rx Shift Register (internal)
ID and RB
13/32
ID and RB
13/32
Write
Enable
13/32
RTR
RTR IDE
=
IDE
1
ID MSK Registers (Ch i)
13/32
ID and RB
13/32
4182I–CAN–06/05
RTR
IDE
(Ch i)
Hit