User Manual

AT75C220
89
USART Interrupt Mask Register
Name: US_IMR
Access Type:Read-only
Reset Value: 0x0
• RXRDY: RXRDY Interrupt Mask
0 = RXRDY interrupt is disabled.
1 = RXRDY interrupt is enabled.
• TXRDY: TXRDY Interrupt Mask
0 = TXRDY interrupt is disabled.
1 = TXRDY interrupt is enabled.
• RXBRK: Receiver Break Interrupt Mask
0 = Receiver break interrupt is disabled.
1 = Receiver break interrupt is enabled.
• ENDRX: End of Receive Transfer Interrupt Mask
0 = End of Receive Transfer Interrupt is disabled.
1 = End of Receive Transfer Interrupt is enabled.
• ENDTX: End of Transmit Transfer Interrupt Mask
0 = End of transmit transfer interrupt is disabled.
1 = End of transmit transfer interrupt is enabled.
• OVRE: Overrun Error Interrupt Mask
0 = Overrun error interrupt is disabled.
1 = Overrun error interrupt is enabled.
• FRAME: Framing Error Interrupt Mask
0 = Framing error interrupt is disabled.
1 = Framing error interrupt is enabled.
• PARE: Parity Error Interrupt Mask
0 = Parity error interrupt is disabled.
1 = Parity error interrupt is enabled.
• TIMEOUT: Time-out Interrupt Mask
0 = Receive time-out interrupt is disabled.
1 = Receive time-out interrupt is enabled.
• TXEMPTY: TXEMPTY Interrupt Mask
0 = TXEMPTY interrupt is disabled.
1 = TXEMPTY interrupt is enabled.
• DMSI: Delta Modem Status Indication Interrupt
0 = DMSI interrupt is disabled.
1 = DMSI interrupt is enabled.
31 30 29 28 27 26 25 24
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23 22 21 20 19 18 17 16
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15 14 13 12 11 10 9 8
–––––DMSI TXEMPTY TIMEOUT
76543210
PARE FRAME OVRE ENDTX ENDRX RXBRK TXRDY RXRDY