FlexRay Communication Controller (FLEXRAY)
22-16
Freescale Semiconductor
PXR40 Microcontroller Reference Manual, Rev. 1
22.5.2.6
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 22-10. SYMBADR Field Descriptions
Field
Description
SMBA
System Memory Base Address — This is the value of the system memory base address for the individual
message buffers and sync frame table. This is the value of the system memory base address for the receive
FIFO if the FIFO address mode bit MCR[FAM] is set to 1. It is defines as a byte address.
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
0
0
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 22-6. Strobe Signal Control Register (STBSCR)
Table 22-11. STBSCR Field Descriptions
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
.
ENB
Strobe Signal Enable — The control bit is used to enable and to disable the strobe signal selected by
STBSSEL.
0 Strobe signal is disabled and not assigned to any strobe port.
1 Strobe signal is enabled and assigned to the strobe port selected by STBPSEL.
STBPSEL
Strobe Port Select — This field selects the strobe port that the strobe signal selected by the SEL is assigned
to. All strobe signals that are enabled and assigned to the same strobe port are combined with a binary OR
operation.
00 assign selected signal to FR_DBG[0]
01 assign selected signal to FR_DBG[1]
10 assign selected signal to FR_DBG[2]
11 assign selected signal to FR_DBG[3]
Summary of Contents for PXR4030
Page 1: ...PXR40 Microcontroller Reference Manual Devices Supported PXR4030 PXR4040 PXR40RM Rev 1 06 2011...
Page 30: ...PXR40 Microcontroller Reference Manual Rev 1 Freescale Semiconductor xxx...
Page 40: ...PXR40 Microcontroller Reference Manual Rev 1 xl Freescale Semiconductor...
Page 66: ...Memory Map PXR40 Microcontroller Reference Manual Rev 1 2 4 Freescale Semiconductor...
Page 120: ...Signal Descriptions 3 54 Freescale Semiconductor PXR40 Microcontroller Reference Manual Rev 1...
Page 860: ...FlexCAN Module 24 50 Freescale Semiconductor PXR40 Microcontroller Reference Manual Rev 1...
Page 1167: ...Decimation Filter Freescale Semiconductor 28 53 PXR40 Microcontroller Reference Manual Rev 1...
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