21.3.4 SENTx Status Register
- This bit is read-only in Receive mode and writable (settable and clearable) in Transmit mode.
| Symbol | Description | Symbol | Description | Symbol | Description |
|---|---|---|---|---|---|
| R | Readable bit | HC | Cleared by Hardware | (Gray cell) | Unimplemented |
| W | Writable bit | HS | Set by Hardware | X | Bit is unknown at Reset |
| C | Write to clear | S | Software settable bit | x | Channel number |
| Name: | SENTxSTAT |
| Offset: | 0x0019CC, 0x0019EC |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| Access | |||||||||
| Reset |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| Access | |||||||||
| Reset |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| PAUSE | NIB[2:0] | CRCERR | FRMERR | RXIDLE | SYNCTXEN | ||||
| Access | R | R | R | R | R/C | R/C | R | R/W/HC | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Bit 7 – PAUSE Pause Period Status bit
| Value | Description |
|---|---|
1 | The module is transmitting/receiving a Pause period |
0 | The module is not transmitting/receiving a Pause period |
Bits 6:4 – NIB[2:0] Nibble Status bits
In Transmit Mode (RCVEN = 0):
111 = Module is transmitting CRC nibble
110 = Module is transmitting Data Nibble 6
101 = Module is transmitting Data Nibble 5
100 = Module is transmitting Data Nibble 4
011 = Module is transmitting Data Nibble 3
010 = Module is transmitting Data Nibble 2
001 = Module is transmitting Data Nibble 1
000 = Module is transmitting status nibble or Pause period, or
is not transmitting
In Receive Mode (RCVEN = 1):
111 = Module is receiving CRC nibble or was receiving this
nibble when an error occurred
110 = Module is receiving Data Nibble 6 or was receiving this
nibble when an error occurred
101 = Module is receiving Data Nibble 5 or was receiving this
nibble when an error occurred
100 = Module is receiving Data Nibble 4 or was receiving this
nibble when an error occurred
011 = Module is receiving Data Nibble 3 or was receiving this
nibble when an error occurred
010 = Module is receiving Data Nibble 2 or was receiving this
nibble when an error occurred
001 = Module is receiving Data Nibble 1 or was receiving this
nibble when an error occurred
000 = Module is receiving Status nibble or waiting for Sync
Bit 3 – CRCERR CRC Status bit (Receive mode only)
| Value | Description |
|---|---|
1 | A CRC error occurred for the data nibbles in the SENTxDAT register |
0 | No CRC error has occurred |
Bit 2 – FRMERR Framing Error Status bit (Receive mode only)
| Value | Description |
|---|---|
1 | A data nibble was received with less than 12 tick periods or greater than 27 tick periods |
0 | No framing error has occurred |
Bit 1 – RXIDLE Receiver Idle Status bit (Receive mode only)
| Value | Description |
|---|---|
1 | The SENTx data bus has been Idle (high) for a period of SYNCMAX or greater |
0 | The SENTx data bus is not Idle |
Bit 0 – SYNCTXEN Synchronization Period Status/Transmit Enable bit(1)
In Receive Mode (RCVEN = 1):
1 = A valid synchronization period was detected, the module is
receiving nibble data
0 = No synchronization period has been detected, the module is
not receiving nibble data
In Synchronous Transmit Mode (RCVEN = 0, TXM =
1):
1 = The module is transmitting a SENT data frame
0 = The module is not transmitting a data frame; software may
set SYNCTXEN to start another data frame transmission
In Asynchronous Transmit Mode (RCVEN = 0, TXM =
0):
SYNCTXEN always reads as ‘1’, indicating the module is
transmitting frames continuously.