ISD94100 Series Technical Reference Manual
Sep 9, 2019
Page
718
of 928
Rev1.09
IS
D
9
410
0
S
ER
IE
S
T
E
C
HN
ICA
L
RE
F
E
RE
NCE
M
AN
U
AL
1 = Slave TX underflow interrupt Enabled.
[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.
Note1:
The TX underflow event occurs if there is no any data in TX FIFO when the
slave selection signal is active.
Note2:
When TX underflow event occurs, SPI0_MISO0 pin state will be determined
by this setting even though TX FIFO is not empty afterward. Data stored in TX FIFO
will be sent through SPI0_MISO pin in the next transfer frame.
[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 (SPI0_STATUS[23]) to check if reset is accomplished or not.
Note:
If TX underflow event occurs in SPI Slave mode, this bit can be used to make
SPI return to idle state.
[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 (SPI0_STATUS[23]) to check if reset is accomplished or not.
Содержание ISD94100 Series
Страница 528: ...ISD94100 Series Technical Reference Manual Sep 9 2019 Page 528 of 928 Rev1 09 ISD94100 SERIES TECHNICAL REFERENCE MANUAL...
Страница 626: ...ISD94100 Series Technical Reference Manual Sep 9 2019 Page 626 of 928 Rev1 09 ISD94100 SERIES TECHNICAL REFERENCE MANUAL...
Страница 702: ...ISD94100 Series Technical Reference Manual Sep 9 2019 Page 702 of 928 Rev1 09 ISD94100 SERIES TECHNICAL REFERENCE MANUAL...
Страница 875: ...ISD94100 Series Technical Reference Manual Sep 9 2019 Page 875 of 928 Rev1 09 ISD94100 SERIES TECHNICAL REFERENCE MANUAL...