C505_9708 SIEMENS [Siemens Semiconductor Group], C505_9708 Datasheet - Page 143

• Manufacturer Part Number: C505_9708
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

CAN Data Bytes DB0-DB7 (Addresses F7n7 H -F7nE H )
Message data for message object 15 (last message) will be written into a two-message-alternating
buffer to avoid the loss of a message, if a second message has been received, before the
microcontroller has read the first one.
6.4.3 Handling of Message Objects
The following diagrams (figures 6-33 to 6-38) summarize the actions that have to be taken in order
to transmit and receive messages over the CAN bus. The actions taken by the CAN controller are
described as well as the actions that have to be taken by the microcontroller (i.e. the servicing
program).
Semiconductor Group
F7n7 H
F7nE H
Bit No.
-
MSB
.7
rw
7
.6
rw
6
.5
rw
5
.4
rw
4
6-81
rw
.3
3
On-Chip Peripheral Components
.2
rw
2
.1
rw
1
Reset Value : XX H
.0
rw
0
C505C Only
LSB
1997-08-01
DB0-7