Freescale Semiconductor FlexRay MFR4310 - Slot Status Monitoring; Figure 3-138. Slot Status Vector Update

FlexRay Module (FLEXRAYV4)
MFR4310 Reference Manual, Rev. 2
194 Freescale Semiconductor
reached 0. At the macrotick start event, the value of MT[31:0] is checked and then decremented. Thus, if
the timer is started with MT[31:0] == 0, it expires at the next macrotick start.
3.4.18 Slot Status Monitoring
The FlexRay module provides several means for slot status monitoring. All slot status monitors use the
same slot status vector provided by the PE. The PE provides a slot status vector for each static slot, for
each dynamic slot, for the symbol window, and for the NIT, on a per channel base. The content of the slot
status vector is described in Table 3-109. The PE provides the slot status vector within the first macrotick
after the end of the related slot/window/NIT, as shown in Figure 3-138.
Figure 3-138. Slot Status Vector Update
NOTE
The slot status for the NIT of cycle n is provided after the start of cycle n+1.
cycle start
slot start
slot start
symbol window start
MT
status(NIT)
MT
status(slot 1)
status(slot k)
MT
status(slot n)
MT
NIT start
status(sym.win)
MT
cycle start
status(NIT)
communication cycle
static segment dynamic segment symbol window NIT
slot 1
MT