Preliminary
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Registers
Table 12-10. McSPI Interrupt Status Register (MCSPI_IRQSTATUS) Field Descriptions (continued)
Bit
Field
Value
Description
12
TX3_EMPTY
Transmitter register is empty or almost empty. This bit indicate FIFO almost full status when
built-in FIFO is used for transmit register (MCSPI_CH3CONF[FFE3W] is set).
Note: Enabling the channel automatically raises this event.
Write 0
Event status bit is unchanged.
Read 0
Event false.
Write 1
Event status bit is reset.
Read 1
Event is pending.
11
Reserved
0
Reads returns 0
10
RX2_FULL
Receiver register full or almost full. Channel 2 This bit indicate FIFO almost full status when
built-in FIFO is used for receive register (MCSPI_CH3CONF[FFE2R] is set).
Write 0
Event status bit is unchanged.
Read 0
Event false.
Write 1
Event status bit is reset.
Read 1
Event is pending.
9
TX2_UNDERFLOW
Transmitter register underflow. Channel 2
Write 0
Event status bit is unchanged.
Read 0
Event false.
Write 1
Event status bit is reset.
Read 1
Event is pending.
8
TX2_EMPTY
Transmitter register empty or almost empty. Channel 2. This bit indicate FIFO almost full
status when built-in FIFO is used for transmit register (MCSPI_CH3CONF[FFE2W] is set).
Write 0
Event status bit is unchanged.
Read 0
Event false.
Write 1
Event status bit is reset.
Read 1
Event is pending.
7
Reserved
0
Reads returns 0
6
RX1_FULL
Receiver register full or almost full. Channel 1. This bit indicate FIFO almost full status when
built-in FIFO is use for receive register (MCSPI_CH3CONF[FFE1R] is set).
Write 0
Event status bit is unchanged.
Read 0
Event false.
Write 1
Event status bit is reset.
Read 1
Event is pending.
5
TX1_UNDERFLOW
Transmitter register underflow. Channel 1.
Write 0
Event status bit is unchanged.
Read 0
Event false.
Write 1
Event status bit is reset.
Read 1
Event is pending.
4
TX1_EMPTY
Transmitter register empty or almost empty. Channel 1. This bit indicate FIFO almost full
status when built-in FIFO is use for transmit register (MCSPI_CH3CONF[FFE1W] is set).
Write 0
Event status bit is unchanged.
Read 0
Event false.
Write 1
Event status bit is reset.
Read 1
Event is pending.
3
RX0_OVERFLOW
Receiver register overflow (slave mode only). Channel 0.
Write 0
Event status bit is unchanged.
Read 0
Event false.
Write 1
Event status bit is reset.
Read 1
Event is pending.
1255
SPRUGX9 – 15 April 2011
Multichannel Serial Port Interface (McSPI)
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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