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FlexRay Module Registers
1369
SPNU563A–March 2018
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FlexRay Module
26.3.2.3.10 GTU Configuration Register 3 (GTUC3)
The communication controller accepts modifications of the register in DEFAULT_CONFIG or CONFIG
state only.
Figure 26-137 and Table 26-116 illustrate this register.
Figure 26-137. GTU Configuration Register 3 (GTUC3) [offset_CC = A8h]
31 30 24 23 22 16
Rsvd MIOB* Rsvd MIOA*
R-0 R/W-2h R-0 R/W-2h
15 8 7 0
UIOB* UIOA*
R/W-0 R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset; *These bits can be updated in DEFAULT_CONFIG or CONFIG state
only.
Table 26-116. GTU Configuration Register 3 (GTUC3) Field Descriptions
Bit Field Value Description
31 Reserved 0 Reads return 0. Writes have no effect.
30-24 MIOB 2h-48h MT Macrotick initial offset channel B (in macroticks). These bits configure the number of macroticks
between the static slot boundary and the subsequent macrotick boundary of the secondary time
reference point based on the nominal macrotick duration. Must be identical in all nodes of a
cluster.
23 Reserved 0 Reads return 0. Writes have no effect.
22-16 MIOA 2h-48h MT Macrotick initial offset channel A (in macroticks). These bits configure the number of macroticks
between the static slot boundary and the subsequent macrotick boundary of the secondary time
reference point based on the nominal macrotick duration. Must be identical in all nodes of a
cluster.
15-8 UIOB 0-F0h µT Microtick initial offset channel B (in microticks). These bits configure the number of microticks
between the actual time reference point on channel B and the subsequent macrotick boundary of
the secondary time reference point. The parameter has to be set for each channel independently.
7-0 UIOA 0-F0h µT Microtick initial offset channel A (in microticks). These bits configure the number of microticks
between the actual time reference point on channel A and the subsequent macrotick boundary of
the secondary time reference point. The parameter has to be set for each channel independently.
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