Chapter 24 Multichannel Serial Port Interface (McSPI).

www.ti.com McSPI Registers
Table 24-14. 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.
SPRUH73E–October 2011–Revised May 2012 Multichannel Serial Port Interface (McSPI)
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