mc9s12xf512 Freescale Semiconductor, Inc, mc9s12xf512 Datasheet - Page 474

• Manufacturer Part Number: mc9s12xf512
• Description: S12x Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 13 FlexRay Communication Controller (FLEXRAY)
Write: Anytime
This register is used to assign the individual protocol timing related strobe signals given in
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
Signal
474
.;
STBPSEL
dec
10
0
1
2
3
4
5
6
7
8
9
WMD
Field
14–8
ENB
SEL
1–0
15
4
SEL
Support”.
0x0A
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
hex
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.
Strobe Signal Select — This control field selects one of the strobe signals given in
or disabled and assigned to one of the four strobe ports given in
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.
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 STB0
01 assign selected signal to STB1
10 assign selected signal to STB2
11 assign selected signal to STB3
In single channel device mode, channel B related strobe signals are
undefined and should not be assigned to the strobe ports.
poc_startup_state[0] (for coding see PSR0[4])
poc_startup_state[1] (for coding see PSR0[5])
poc_startup_state[2] (for coding see PSR0[6])
poc_startup_state[3] (for coding see PSR0[7])
poc_state[0] (for coding see PSR0[8])
poc_state[1] (for coding see PSR0[9])
poc_state[2] (for coding see PSR0[10])
channel idle indicator
receive data after glitch filtering
Table 13-13. Strobe Signal Mapping (Sheet 1 of 3)
MC9S12XF - Family Reference Manual, Rev.1.19
Table 13-12. STBSCR Field Descriptions
Description
NOTE
Description
Channel
Table
A
B
A
B
-
13-13.
value
value
Type
level
Section 13.6.16, “Strobe
Table 13-13
Freescale Semiconductor
Offset
+5
+4
0
Table 13-13
(1)
to be enabled
Reference
MT start
RXD_A
RXD_B
RXD_A
RXD_B
to