C505_9708 SIEMENS [Siemens Semiconductor Group], C505_9708 Datasheet - Page 127

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

6.4.2 CAN Register Description
Notational Conventions
Each CAN register is described with its bit symbols, address, reset value, and a functional
description of each bit or bitfield. Also the access type is indicated for each bit or bitfield :
After reset the CAN registers either contain a defined reset value, keep their previous contents
(UU H ), or are undefined (XX H ). Locations that are unchanged (UU H ) after reset, of course are
undefined (XX H ) after a power-on reset operation. The reset values are defined either in hex (with
index H ) or binary (with index B ) expressions.
The notation “n“ in the address definition of the message object registers defines the number of the
related message object (n=1-15).
6.4.2.1
The general registers of the CAN controller are located at the external data memory location F700 H
to F70F H . The registers of this general register block is shown in figure 6-31. The address mapping
of the 16 registers/bytes of a message object is shown in figure 6-32.
Semiconductor Group
r
w
rw : for read and write access
: for read access
: for write access
General Registers
6-65
On-Chip Peripheral Components
C505C Only
1997-08-01