PXR40RM Datasheet, PDF (599/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

FlexRay Communication Controller (FLEXRAY)
Table 22-9. FlexRay Channel Selection
SCM CHB CHA
Description
Dual Channel Device Modes
0
0
ports FR_A_RX, FR_A_TX, and FR_A_TX_EN not driven by controller
ports FR_B_RX, FR_B_TX, and FR_A_TX_EN not driven by controller
0
1
ports FR_A_RX, FR_A_TX, and FR_A_TX_EN driven by controller - connected to FlexRay channel A
ports FR_B_RX, FR_B_TX, and FR_A_TX_EN not driven by controller
0
1
0
ports FR_A_RX, FR_A_TX, and FR_A_TX_EN not driven by controller
ports FR_B_RX, FR_B_TX, and FR_A_TX_EN driven by controller - connected to FlexRay channel B
1
1
ports FR_A_RX, FR_A_TX, and FR_A_TX_EN driven by controller - connected to FlexRay channel A
ports FR_B_RX, FR_B_TX, and FR_A_TX_EN driven by controller - connected to FlexRay channel B
Single Channel Device Mode
0
0
ports FR_A_RX, FR_A_TX, and FR_A_TX_EN not driven by controller
ports FR_B_RX, FR_B_TX, and FR_A_TX_EN not driven by controller
1
0
1
ports FR_A_RX, FR_A_TX, and FR_A_TX_EN driven by controller - connected to FlexRay channel A
ports FR_B_RX, FR_B_TX, and FR_A_TX_EN not driven by controller
1
0
ports FR_A_RX, FR_A_TX, and FR_A_TX_EN driven by controller - connected to FlexRay channel B
ports FR_B_RX, FR_B_TX, and FR_A_TX_EN not driven by controller
1
1 reserved
22.5.2.5 System Memory Base Address Register (SYMBADR)
Base + 0x0004
Write: Disabled Mode
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
SMBA[31:16]
W
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 22-4. System Memory Base Address High Register (SYMBADHR)
Base + 0x0006
Write: Disabled Mode
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
SMBA[15:4]
W
0
0
0
0
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 22-5. System Memory Base Address Low Register (SYMBADLR)
NOTE
The system memory base address must be set before the controller is
enabled.
The system memory base address registers define the base address of the flexray memory within the
system memory. The base address is used by the BMIF to calculate the physical memory address for
system memory accesses.
Freescale Semiconductor
PXR40 Microcontroller Reference Manual, Rev. 1
22-15