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FlexRay Module Registers
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SPNU563A–March 2018
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FlexRay Module
26.3.1.4 Transfer Status Current Buffer (TSCB)
The Transfer Status Current Buffer displays the current buffer in progress and indicates if the Transfer
Unit State Machine is idle and is halt. The IDLE flag is cleared by writing a 1 to it.
Figure 26-36. Transfer Status Current Buffer (TSCB) [offset_TU = 18h]
31 21 20 16
Reserved TSMS
R-0 R-0
15 13 12 11 9 8 7 6 0
Reserved STUH Reserved IDLE RSVD BN
R-0 R-0 R-0 R/W-1 R-0 R-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 26-22. Transfer Status Current Buffer (TSCB) Field Descriptions
Bit Field Value Description
31-21 Reserved 0 Reads return 0. Writes have no effect.
20-16 TSMS Transfer State Machine Status.
Reflects the current status of the transfer state machine for debug purpose (only available in
debug mode in combination with a debugger). In Normal Operation Mode, the value of TSMS is
always read as 0.
1h IDLE state
Transfer Trigger to System Memory:
2h Start state (TTSM_START)
3h Output Buffer Command Mask access state (TTSM_OBCM)
4h Request state (TTSM_REQ)
5h View state (TTSM_VIEW)
6h Check state (TTSM_CHECK)
7h Read Header Section access state (TTSM_RDHS)
8h Read Data Section access state (TTSM_RDDS)
Transfer Trigger to Communication Controller:
9h Start state (TTCC_START)
Ah Busy state (TTCC_IBUSY)
Bh Check state (TTCC_CHECK)
Ch Write Header Section access state (TTCC_WRHS)
Dh Payload Read state (TTCC_PLC_READ)
Eh Payload Calculation state (TTCC_PLC_CALC)
Fh Write Data Section access state (TTCC_WRDS)
10h Input Buffer Command Mask access state (TTCC_IBCM)
11h Input Buffer Command Request access state (TTCC_IBCR)
12h Mirror state (TTCC_MIRROR)
13h End state (TTSM_END)
14h-1Eh Reserved
1Fh Undefined state
15-13 Reserved 0 Reads return 0. Writes have no effect.
12 STUH Status of Transfer Unit State Machine for Halt Detection.
0 Not in HALT status.
1 In HALT status.
11-9 Reserved 0 Reads return 0. Writes have no effect.
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