C505_9708 SIEMENS [Siemens Semiconductor Group], C505_9708 Datasheet - Page 159

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

6.4.10 The CAN Application Interface
The on-chip CAN controller of the C505C does not incorporate the physical layer that connects to
the CAN bus. This must be provided externally. The module’s CAN controller is connected to this
physical layer (ie. the CAN bus) via two signals:
CAN Signal
P4.1 / RXDC
P4.0 / TXDC
A logic low level (“0”) is interpreted as the dominant CAN bus level, a logic high level (“1”) is
interpreted as the recessive CAN bus level.
Figure 6-41
Connection to the CAN Bus
Semiconductor Group
C505C
Function
Receive data from the physical layer of the CAN bus.
Transmit data to the physical layer of the CAN bus.
P4.0 / TXDC
P4.1 / RXDC
6-97
On-Chip Peripheral Components
Interface
Physical
Layer
CAN
MCS03297
C505C Only
1997-08-01