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M451
May. 4, 2018
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Rev.2.08
M4
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[6]
TXUFPOL
TX Underflow Data Polarity
0 = The SPI data out is keep 0 if there is TX underflow event in Slave mode.
1 = The SPI data out is keep 1 if there is TX underflow event in Slave mode.
Note 1:
The TX underflow event occurs if there is not any data in TX FIFO when the
slave selection signal is active.
Note 2:
This bit should be set as 0 in I
2
S mode.
[5]
RXOVIEN
Receive FIFO Overrun Interrupt Enable Bit
0 = Receive FIFO overrun interrupt Disabled.
1 = Receive FIFO overrun interrupt Enabled.
[4]
RXTOIEN
Slave Receive Time-out Interrupt Enable Bit
0 = Receive time-out interrupt Disabled.
1 = Receive time-out interrupt Enabled.
[3]
TXTHIEN
Transmit FIFO Threshold Interrupt Enable Bit
0 = TX FIFO threshold interrupt Disabled.
1 = TX FIFO threshold interrupt Enabled.
[2]
RXTHIEN
Receive FIFO Threshold Interrupt Enable Bit
0 = RX FIFO threshold interrupt Disabled.
1 = RX FIFO threshold interrupt Enabled.
[1]
TXRST
Transmit Reset
0 = No effect.
1 = Reset transmit FIFO pointer and transmit circuit. The TXFULL bit will be cleared
to 0 and the TXEMPTY bit will be set to 1. This bit will be cleared to 0 by hardware
about 3 system clock 2 peripheral clock cycles after it is set to 1. User can
read TXRXRST (SPI_STATUS[23]) to check if reset is accomplished or not.
Note:
If there is slave receive time-out event, the TXRST will be set to 1 when the
SLVTORST (SPI_SSCTL[6]) is enabled.
[0]
RXRST
Receive Reset
0 = No effect.
1 = Reset receive FIFO pointer and receive circuit. The RXFULL bit will be cleared to
0 and the RXEMPTY bit will be set to 1. This bit will be cleared to 0 by hardware
about 3 system clock 2 peripheral clock cycles after it is set to 1. User can
read TXRXRST (SPI_STATUS[23]) to check if reset is accomplished or not.
Note:
If there is slave receive time-out event, the RXRST will be set 1 when the
SLVTORST (SPI_SSCTL[6]) is enabled.
Содержание ARM Cortex NuMicro M451 Series
Страница 301: ...M451 May 4 2018 Page 301 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL...
Страница 324: ...M451 May 4 2018 Page 324 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL Figure 6 4 18 Checksum Calculation Flow...
Страница 355: ...M451 May 4 2018 Page 355 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 2 0 Reserved Reserved...
Страница 625: ...M451 May 4 2018 Page 625 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 00 5 bits 01 6 bits 10 7 bits 11 8 bits...
Страница 721: ...M451 May 4 2018 Page 721 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL the SCL line 1 0 Reserved Reserved...
Страница 1001: ...M451 May 4 2018 Page 1001 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 10x10x1 4 mm footprint 2 0 mm 9 2...
Страница 1002: ...M451 May 4 2018 Page 1002 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 7x7x1 4 mm footprint 2 0 mm 9 3...
Страница 1003: ...M451 May 4 2018 Page 1003 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 48L 7x7x1 4mm footprint 2 0mm 9 4...