PXS20RM Datasheet, PDF (784/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

FlexRay Communication Controller
Table 26-76. FR_LDTXSLAR Field Descriptions
Field
Description
LASTDYNTX Last Dynamic Transmission Slot Channel A — protocol related variable: zLastDynTxSlot channel
SLOTA A
Number of the last transmission slot in the dynamic segment for channel A. If no frame was
transmitted during the dynamic segment on channel A, the value of this field is set to 0.
26.5.2.68 Last Dynamic Transmit Slot Channel B Register (FR_LDTXSLBR)
Base + 0x009E
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R0 0 0 0 0
LASTDYNTXSLOTB
W
Rese
t
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 26-69. Last Dynamic Transmit Slot Channel B Register (FR_LDTXSLBR)
This register provides the number of the last transmission slot in the dynamic segment for channel B. This
register is updated after the end of the dynamic segment and before the start of the next communication
cycle.
Table 26-77. FR_LDTXSLBR Field Descriptions
Field
Description
LASTDYNTX Last Dynamic Transmission Slot Channel B — protocol related variable: zLastDynTxSlot channel
SLOTB B
Number of the last transmission slot in the dynamic segment for channel B. If no frame was
transmitted during the dynamic segment on channel B the value of this field is set to 0.
26.5.2.69 Protocol Configuration Registers
The following configuration registers provide the necessary configuration information to the protocol
engine. The individual values in the registers are described in Table 26-78. For more details about the
FlexRay related configuration parameters and the allowed parameter ranges, see FlexRay
Communications System Protocol Specification, Version 2.1 Rev A.
Table 26-78. Protocol Configuration Register Fields
Name
coldstart_attempts
action_point_offset
cas_rx_low_max
dynamic_slot_idle_phase
minislot_action_point_offset
Description¹
gColdstartAttempts
gdActionPointOffset - 1
gdCASRxLowMax - 1
gdDynamicSlotIdlePhase
gdMinislotActionPointOffset - 1
Min Max
Unit
FR_PC
R
number
3
MT
0
gdBit
4
minislot 28
MT
3
26-72
PXS20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor