FlexRay Module Registers
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SPNU563A–March 2018
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FlexRay Module
26.3.2.4.10 Even Sync ID Registers (ESID[1-15])
Registers ESID1 to ESID15 hold the frame IDs of the sync frames received in even communication
cycles, assorted in ascending order, with register ESID1 holding the lowest received sync frame ID. If the
node transmits a sync frame in an even communication cycle by itself, register ESID1 holds the respective
sync frame ID as configured in message buffer 0. The value is updated during the NIT of each even
communication cycle. This register is reset when the Communication Controller leaves CONFIG state or
enters STARTUP state.
Figure 26-155 and Table 26-134 illustrate this register.
Figure 26-155. Even Sync ID Registers (ESIDn) [offset_CC = 130h-168h]
31 16
Reserved
R-0
15 14 13 10 9 0
RXEB RXEA Reserved EID
R-0 R-0 R-0 R-0
LEGEND: R = Read only; -n = value after reset
Table 26-134. Even Sync ID Registers (ESIDn) Field Descriptions
Bit Field Value Description
31-16 Reserved 0 Reads return 0. Writes have no effect.
15 RXEB Received even sync ID on channel B. A sync frame corresponding to the stored even sync ID was
received on channel B.
0 Sync frame is not received on channel B.
1 Sync frame is received on channel B.
14 RXEA Received even sync ID on channel A. A sync frame corresponding to the stored even sync ID was
received on channel A.
0 Sync frame is not received on channel A.
1 Sync frame is received on channel A.
13-10 Reserved 0 Reads return 0. Writes have no effect.
9-0 EID Even Sync ID. Sync frame ID even communication cycle.
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