FlexRay Communication Controller (FLEXRAY)
MPC5510 Microcontroller Family Reference Manual, Rev. 1
30-16
Freescale Semiconductor
Preliminary
NOTE
The system memory base address must be set before the FlexRay block is
enabled.
The system memory base address registers define the base address of the FRM within the system memory.
The base address is used by the BMIF to calculate the physical memory address for system memory
accesses.
30.5.2.6
Strobe Signal Control Register (STBSCR)
This register is used to assign the individual protocol timing related strobe signals given in
to
the external strobe ports. Each strobe signal can be assigned to at most one strobe port. Each write access
to registers overwrites the previously written ENB and STBPSEL values for the signal indicated by SEL.
If more than one strobe signal is assigned to one strobe port, the current values of the strobe signals are
combined with a binary OR and presented at the strobe port. If no strobe signal is assigned to a strobe port,
the strobe port carries logic 0. For more detailed and timing information refer to
.
NOTE
In single channel device mode, channel B related strobe signals are
undefined and should not be assigned to the strobe ports.
Table 30-11. SYMBADHR and SYMBADLR Field Descriptions
Field
Description
SYMBADHR
SYMBADLR
This base address will be added to all system memory offset values stored in registers or calculated in the
FlexRay block before the FlexRay block accesses the system memory via its bus master interface. The system
memory base address must be aligned to an 16-byte boundary.
Base + 0x0008
16-bit write access required
Write: Anytime
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
0
SEL
0
0
0
ENB
0
0
STBPSEL
W WMD
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 30-6. Strobe Signal Control Register (STBSCR)
Table 30-12. STBSCR Field Descriptions (Sheet 1 of 2)
Field
Description
WMD
Write Mode. This control bit defines the write mode of this register.
0 Write to all fields in this register on write access.
1 Write to SEL field only on write access.
SEL
Strobe Signal Select. This control field selects one of the strobe signals given in
to be enabled or
disabled and assigned to one of the four strobe ports given in
.