C505_9708 SIEMENS [Siemens Semiconductor Group], C505_9708 Datasheet - Page 129
C505_9708
Manufacturer Part Number
C505_9708
Description
8-Bit CMOS Microcontroller
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.C505_9708.pdf
(227 pages)
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CAN Control Register CR (Address F700 H )
Bit
TEST
CCE
EIE
SIE
IE
INIT
Semiconductor Group
Bit No.
F700 H
MSB
TEST
rw
7
Function
Test mode
Make sure that bit 7 is cleared when writing to the control register, as this bit
controls a special test mode, that is used for production testing. During normal
operation, however, this test mode may lead to undesired behaviour of the device.
Configuration change enable
Allows or inhibits microcontroller access to the bit timing register.
Error interrupt enable
Enables or disables interrupt generation on a change of bit BOFF or EWRN in the
status register.
Status change interrupt enable
Enables or disables interrupt generation when a message transfer (reception or
transmission) is successfully completed or a CAN bus error is detected (and
registered in the status register).
Interrupt enable
Enables or disables interrupt generation from the CAN module to the interrupt
controller of the C505C. Does not affect status updates. Additionally, bit ECAN in
SFR IEN1 and bit EAL in SFR IEN0 must be set when a CAN controller interrupt
should be generated.
Initialization
Starts the initialization of the CAN controller, when set.
CCE
rw
6
5
0
r
4
0
r
6-67
EIE
rw
3
On-Chip Peripheral Components
SIE
rw
2
IE
rw
1
Reset Value : 01 H
INIT
rw
0
LSB
C505C Only
1997-08-01
CR
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