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FlexRay Module Registers

MONITOR_MODE

Enter MONITOR_MODE when called in POC state CONFIG. In this mode the communication controller is

able to receive FlexRay frames and CAS / MTS symbols. It is also able to detect coding errors. The

temporal integrity of received frames is not checked. This mode can be used for debugging purposes, for

example, in case that the startup of a FlexRay network fails. When called in any other state, CMD will be

reset to 0000 = command_not_accepted.

26.3.2.3.2 SUC Configuration Register 2 (SUCC2)

The communication controller accepts modifications of the register in DEFAULT_CONFIG or CONFIG

state only.

Figure 26-129 and Table 26-114 illustrate this register.

Figure 26-129. SUC Configuration Register 2 (SUCC2) [offset_CC = 84h]

31 28 27 24 23 21 20 16

Reserved LTN* Reserved LT*

R-0 R/W-1h R-0 R/W-504h

15 0

LT*

R/W-504h

LEGEND: R/W = Read/Write; R = Read only; -n = value after reset; *These bits can be updated in DEFAULT_CONFIG or CONFIG state

only.

Table 26-114. SUC Configuration Register 2 (SUCC2) Field Descriptions

Bit Field Value Description

31-28 Reserved. 0 Reads return 0. Writes have no effect.

27-24 LTN 2-Fh Listen timeout noise. Configures the upper limit for the startup and wakeup listen timeout in the

presence of noise. Must be identical in all nodes of a cluster.

The wakeup / startup noise timeout is calculated as follows: LT· (LTN + 1)

23-21 Reserved. 0 Reads return 0. Writes have no effect.

20-0 LT 504h-139706h µT Listen timeout. Configures the upper limit of the startup and wakeup listen timeout.

1305

SPNU563–May 2014 FlexRay Module

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