Chapter 14 Freescale’s Scalable Controller Area Network (S12MSCANV3)
MC9S12XDP512 Data Sheet, Rev. 2.11
Freescale Semiconductor 637
The IDHITx indicators are always related to the message in the foreground buffer (RxFG). When a
message gets shifted into the foreground buffer of the receiver FIFO the indicators are updated as well.
14.3.2.13 MSCAN Reserved Register
This register is reserved for factory testing of the MSCAN module and is not available in normal system
operation modes.
Read: Always read 0x0000 in normal system operation modes
Write: Unimplemented in normal system operation modes
NOTE
Writing to this register when in special modes can alter the MSCAN
functionality.
14.3.2.14 MSCAN Miscellaneous Register (CANMISC)
This register provides additional features.
Read: Anytime
Write: Anytime; write of ‘1’ clears flag; write of ‘0’ ignored
Module Base + 0x000C
76543210
R00000000
W
Reset: 00000000
= Unimplemented
Figure 14-15. MSCAN Reserved Register
Module Base + 0x000D
76543210
R0000000
BOHOLD
W
Reset: 00000000
= Unimplemented
Figure 14-16. MSCAN Miscellaneous Register (CANMISC)