NXP Semiconductors PXN2020, Справочное руководство, Страница: 631 / 1376

FlexRay Communication Controller (FlexRAY)
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor 26-17
.;
Table 26-11. 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 Table 26-12 to be enabled
or disabled and assigned to one of the four strobe ports given in Table 26-12 .
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].
Table 26-12. Strobe Signal Mapping
SEL
Description Channel Type Offset
1
1
Given in PE clock cycles
Reference
dec hex
0 0x0 arm - value +1 MT start
1 0x1 mt - value +1 MT start
2 0x2 cycle start - pulse 0 MT start
3 0x3 minislot start - pulse 0 MT start
4 0x4 slot start A
pulse 0 MT start
5 0x5 B
6 0x6 receive data after glitch filtering A
value +4
FR_A_RX
7 0x7 B FR_B_RX
8 0x8 channel idle indicator A
level +5
FR_A_RX
9 0x9 B FR_B_RX
10 0xA syntax error detected A
pulse +4
FR_A_RX
11 0xB B FR_B_RX
12 0xC content error detected A
level +4
FR_A_RX
13 0xD B FR_B_RX
14 0xE receive FIFO almost-full interrupt flag A
value n.a.
FAFAIF
15 0xF B FAFBIF