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S9S12G128F0CLF Datasheet, PDF (497/1158 Pages) Freescale Semiconductor, Inc – MC9S12G Family Reference Manual | |||
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Freescaleâs Scalable Controller Area Network (S12MSCANV3)
Module Base + 0x000C to Module Base + 0x000D
7
6
5
4
3
2
R
0
0
0
0
0
0
W
Reset:
0
0
0
0
0
0
= Unimplemented
Figure 16-16. MSCAN Reserved Register
1 Read: Always reads zero in normal system operation modes
Write: Unimplemented in normal system operation modes
Access: User read/write1
1
0
0
0
0
0
NOTE
Writing to this register when in special system operating modes can alter the
MSCAN functionality.
16.3.2.14 MSCAN Miscellaneous Register (CANMISC)
This register provides additional features.
Module Base + 0x000D
Access: User read/write1
7
6
5
4
3
2
1
R
0
0
0
0
0
0
0
W
Reset:
0
0
0
0
0
0
0
= Unimplemented
Figure 16-17. MSCAN Miscellaneous Register (CANMISC)
1 Read: Anytime
Write: Anytime; write of â1â clears ï¬ag; write of â0â ignored
0
BOHOLD
0
Table 16-21. CANMISC Register Field Descriptions
Field
Description
0
BOHOLD
Bus-off State Hold Until User Request â If BORM is set in MSCAN Control Register 1 (CANCTL1), this bit
indicates whether the module has entered the bus-off state. Clearing this bit requests the recovery from bus-off.
Refer to Section 16.5.2, âBus-Off Recovery,â for details.
0 Module is not bus-off or recovery has been requested by user in bus-off state
1 Module is bus-off and holds this state until user request
16.3.2.15 MSCAN Receive Error Counter (CANRXERR)
This register reï¬ects the status of the MSCAN receive error counter.
MC9S12G Family Reference Manual, Rev.1.10
Freescale Semiconductor
497
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