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FlexRay Module Registers
1355
SPNU563A–March 2018
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FlexRay Module
26.3.2.2.8 Timer 0 Configuration Register (T0C)
This absolute timer specifies, in terms of cycle count and macrotick, the point in time when the timer 0
interrupt occurs. The timer 0 interrupt generates a non maskable interrupt signal on CC_tint0.
Timer 0 can be activated as long as the POC is either in NORMAL_ACTIVE state or in
NORMAL_PASSIVE state. Timer 0 is deactivated when leaving NORMAL_ACTIVE state or
NORMAL_PASSIVE state except for transitions between the two states.
Before reconfiguration of the timer, the timer has to be halted first by writing bit T0RC to 0.
Figure 26-124 and Table 26-103 illustrate this register.
Figure 26-124. Timer 0 Configuration Register (T0C) [offset_CC = 44h]
31 30 29 16
Reserved TOMO
R-0 R/W-0
15 14 8 7 2 1 0
Rsvd TOCC Reserved TOMS TORC
R-0 R/W-0 R-0 R/W-0 R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 26-103. Timer 0 Configuration Register (T0C) Field Descriptions
Bit Field Value Description
31-30 Reserved 0 Reads return 0. Writes have no effect.
29-16 TOMO 0-3FFFh Timer 0 macrotick offset. Configures the macrotick offset from the beginning of the cycle where the
interrupt is to occur. The Timer 0 interrupt occurs at this offset for each cycle in the cycle set.
15 Reserved 0 Reads return 0. Writes have no effect.
14-8 TOCC 0-FFh Timer 0 cycle code. The 7-bit timer 0 cycle code determines the cycle set used for generation of
the timer 0 interrupt.
7-2 Reserved 0 Reads return 0. Writes have no effect.
1 TOMS Time 0 mode select.
0 Single-shot mode.
1 Continuous mode.
0 TORC Timer 0 run control.
0 Timer 0 is halted.
1 Timer 0 is running.
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