
Serial Communication Modules
16-10
MPC801 USER’S MANUAL
MOTOROLA
16
GPIODEEN—GPIO Delta Enable
This bit enables an interrupt when the GPIO pin (configured as an input) changes state. The
current state of the GPIO pin is read in the baud control register.
0 = GPIO interrupt is disabled.
1 = GPIO interrupt is enabled.
CTSDEEN—CTS Delta Enable
When it is high, this bit enables an interrupt as the CTS pin changes state. When it is low,
this interrupt is disabled. The current status of the CTS pin is read in the transmitter register.
0 = CTS interrupt is disabled.
1 = CTS interrupt is enabled.
RXFUEN—RX Full Enable
When it is high, this bit enables an interrupt as the receiver FIFO becomes full.
0 = RX FULL interrupt is disabled.
1 = RX FULL interrupt is enabled.
RXHAEN—RX Half Enable
When it is high, this bit enables an interrupt as the receiver FIFO gets more than half full.
0 = RX HALF interrupt is disabled.
1 = RX HALF interrupt is enabled.
RXRDYEN—RX Ready Enable
When it is high, this bit enables an interrupt as the receiver accumulates at least one data
byte in the FIFO. When it is low, this interrupt is disabled.
0 = RX interrupt is disabled.
1 = RX interrupt is enabled.
TXEMEN—TX Empty Enable
When it is high, this bit enables an interrupt as the transmitter FIFO becomes empty and
needs data. When it is low, this interrupt is disabled.
0 = TX EMPTY interrupt is disabled.
1 = TX EMPTY interrupt is enabled.
TXHAEN—TX Half Enable
When it is high, this bit enables an interrupt as the transmit FIFO gets more than half empty.
When it is low, the TX HALF interrupt is disabled.
0 = TXHAEN interrupt is disabled.
1 = TXHAEN interrupt is enabled.