C505_9708 SIEMENS [Siemens Semiconductor Group], C505_9708 Datasheet - Page 157

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

6.4.8 Configuration Examples of a Transmission Object
The microcontroller wishes to configure an object for transmission. It wants to allow automatic
transmission in response to remote frames but does not wish to receive interrupts for this object.
Initialization: The identifier and direction are set up.
Message Control Register
CPUUPD is initially set, as the data bytes for the message have not yet been initialized.
Configuration after remote frame received.
Message Control Register
After updating the message the microcontroller should clear CPUUPD and set NEWDAT. If the
microcontroller wants to transmit the message it should also set TXRQ, which should otherwise be
left alone.
Semiconductor Group
Bit No.
Bit No.
MSB
MSB
7
7
1
0
1
1
RMTPND
RMTPND
MSGVAL
MSGVAL
6
6
0
1
0
0
5
5
0
0
0
1
TXRQ
TXRQ
TXIE
TXIE
1
1
1
0
4
4
6-95
3
3
0
1
CPUUPD
0
1
CPUUPD
On-Chip Peripheral Components
RXIE
RXIE
2
2
1
0
1
0
1
1
0
0
0
0
NEWDAT
NEWDAT
INTPND
INTPND
0
0
1
1
1
1
LSB
LSB
C505C Only
1997-08-01
MCR0
MCR1
MCR0
MCR1