Datasheet

Chapter 10 Freescale’s Scalable Controller Area Network (S12MSCANV2)
308 MC9S12C-Family / MC9S12GC-Family Freescale Semiconductor
Rev 01.24
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.
10.3.2.13 MSCAN Reserved Registers
These registers are 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.
10.3.2.14 MSCAN Receive Error Counter (CANRXERR)
This register reflects the status of the MSCAN receive error counter.
Read: Only when in sleep mode (SLPRQ = 1 and SLPAK = 1) or initialization mode (INITRQ = 1 and
INITAK = 1)
Write: Unimplemented
Module Base + 0x000C, 0x000D
76543210
R00000000
W
Reset: 00000000
= Unimplemented
Figure 10-16. MSCAN Reserved Registers
Module Base + 0x000E
76543210
R RXERR7 RXERR6 RXERR5 RXERR4 RXERR3 RXERR2 RXERR1 RXERR0
W
Reset: 00000000
= Unimplemented
Figure 10-17. MSCAN Receive Error Counter (CANRXERR)