Rainbow Electronics T89C51CC02 - Manual (Page 76)

76 Rev.A - May 17, 2001
Preliminary
T89C51CC02
15.7. Acceptance filter
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.
Figure 62. Acceptance filter block diagram
example:
For accept only ID = 318h in part A.
ID MSK = 111 1111 1111 b
ID TAG = 011 0001 1000 b
13/32
=
13/32
RxDC
13/32
Write
13/32
1
Hit
13/32
ID MSK Registers (Ch i)
ID RTR IDE
Rx Shift Register (internal)
ID RTR IDE
Enable
(Ch i)
ID TAG Registers (Ch i) & CanConch
ID RTR IDE