C515C_9711 Datasheet, PDF (163/268 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

On-Chip Peripheral Components
C515C
Power Up
Initialization
Update: Start
Update
Update: End
(all bits undefined)
TXIE: = (application specific)
RXIE: = (application specific)
INTPND: = 0
RMTPND: = 0
TXRQ: = 0
CPUUPD: = 1
Identifier: = (application specific)
NEWDAT: = 0
Direction: = transmit
DLC: = (application specific)
MSGVAL: = 1
XTD: = (application specific)
CPUUPD: = 1
NEWDAT: = 1
write/calculate message contents
CPUUPD: = 0
Yes
TXRQ: = 1
want to send
?
No
0:reset
1:set
No
update message
Yes
?
MCD02741
Figure 6-46
Microcontroller Handling of Message Objects with Direction = transmit
Semiconductor Group
6-100
1997-11-01