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Chapter 13 FlexRay Communication Controller (FLEXRAY)
MC9S12XF - Family Reference Manual, Rev.1.19
Freescale Semiconductor
491
13.5.2.18 Channel A Status Error Counter Register (CASERCR)
This register provides the channel status error counter for channel A. The protocol engine generates a slot
status vector for each static slot, each dynamic slot, the symbol window, and the NIT. The slot status vector
contains the four protocol related error indicator bits vSS!SyntaxError, vSS!ContentError, vSS!BViolation,
and vSS!TxConict. The FlexRay block increments the status error counter by 1 if, for a slot or segment,
at least one error indicator bit is set to 1. The counter wraps around after it has reached the maximum value.
13.5.2.19 Channel B Status Error Counter Register (CBSERCR)
This register provides the channel status error counter for channel B. The protocol engine generates a slot
status vector for each static slot, each dynamic slot, the symbol window, and the NIT. The slot status vector
contains the four protocol related error indicator bits vSS!SyntaxError, vSS!ContentError, vSS!BViolation,
and vSS!TxConict. The FlexRay block increments the status error counter by 1 if, for a slot or segment,
at least one error indicator bit is set to 1. The counter wraps around after it has reached the maximum value.
Module Base + 0x0024
Additional Reset: RUN Command
15
14
13
12
11
10
9876543210
R
STATUS_ERR_CNT
W
Reset
0000000000000000
Figure 13-18. Channel A Status Error Counter Register (CASERCR)
Table 13-25. CASERCR Field Descriptions
Field
Description
15–0
STATUS_ERR_CNT
Channel Status Error Counter — This eld provides the current value channel status error counter. The
counter value is updated within the rst macrotick of the following slot or segment.
Module Base + 0x0026
Additional Reset: RUN Command
15
14
13
12
11
10
9876543210
R
STATUS_ERR_CNT
W
Reset
0000000000000000
Figure 13-19. Channel B Status Error Counter Register (CBSERCR)
Table 13-26. CBSERCR Field Descriptions
Field
Description
15–0
STATUS_ERR_CNT
Channel Status Error Counter — This eld provides the current channel status error count. The counter
value is updated within the rst macrotick of the following slot or segment.