PXS20RM Datasheet, PDF (718/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

FlexRay Communication Controller
26.1.6.2 Normal Mode
In this mode the CC is fully functional. The CC indicates that it is in Normal Mode by asserting the module
enable bit MEN in the Module Configuration Register (FR_MCR).
26.1.6.2.1 Enter Normal Mode
This mode is entered when the application requests the CC to leave the Disabled Mode . If the Normal
Mode was entered by leaving the Disabled Mode, the application has to perform the protocol initialization
described in 26.7.1.2, Protocol Initialization, to achieve full FlexRay functionality.
Depending on the values of the SCM, CHA, and CHB bits in the Module Configuration Register
(FR_MCR), the corresponding FlexRay bus driver ports are enabled and driven.
26.2 External Signal Description
This section lists and describes the CC signals, connected to external pins. These signals are summarized
in Table 26-2 and described in detail in Section 26.2.1, Detailed Signal Descriptions.
NOTE
The off chip signals CA_RX, CA_TX, and CA_TR_EN are available on
each package option. The availability of the other off chip signals depends
on the package option.
Table 26-2. External Signal Properties
Name
CA_RX
CA_TX
CA_TR_EN
CB_RX
CB_TX
CB_TR_EN
DBG0
DBG1
DBG2
DBG3
Direction
Input
Output
Output
Input
Output
Output
Output
Output
Output
Output
Active
—
—
Low
—
—
Low
—
—
—
—
Reset
—
1
1
—
1
1
0
0
0
0
Function
Receive Data
Channel A
Transmit Data
Channel A
Transmit Enable
Channel A
Receive Data
Channel B
Transmit Data
Channel B
Transmit Enable
Channel B
Debug Strobe Signal
0
Debug Strobe Signal
1
Debug Strobe Signal
2
Debug Strobe Signal
3
26-6
PXS20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor