RM0352 datasheet(130/138 Pages) STMICROELECTRONICS

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UART (universal asynchronous receive transmit)

RM0352

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DocID024647 Rev 1

12.6.10

Interrupt mask set/clear register, UARTIMSC

The UARTIMSC register is the interrupt mask set/clear register. It is a read/write register.

On a read this register returns the current value of the mask on the relevant interrupt. On

a write of 1 to the particular bit, it sets the corresponding mask of that interrupt. A write of 0

clears the corresponding mask.

All the bits are cleared to 0 when reset.

Table 127 lists the register bit assignments.

Table 127. UARTIMSC register

Bits

Name

Function

15:11

RESERVED, read as zero, do not modify.

OEIM

Overrun error interrupt mask. A read returns the current mask for the

UARTOEINTR interrupt.

On a write of 1, the mask of the

UARTOEINTR interrupt is set. A write of 0 clears the mask.

BEIM

Break error interrupt mask. A read returns the current mask for the

UARTBEINTR interrupt.

On a write of 1, the mask of the

UARTBEINTR interrupt is set. A write of 0 clears the mask.

PEIM

Parity error interrupt mask. A read returns the current mask for the

UARTPEINTR interrupt.

On a write of 1, the mask of the

UARTPEINTR interrupt is set. A write of 0 clears the mask.

FEIM

Framing error interrupt mask. A read returns the current mask for the

UARTFEINTR interrupt.

On a write of 1, the mask of the

UARTFEINTR interrupt is set. A write of 0 clears the mask.

RTIM

Receive timeout interrupt mask. A read returns the current mask for the

UARTRTINTR

interrupt.

On a write of 1, the mask of the

UARTRTINTR interrupt is set. A write of 0 clears the mask.

TXIM

Transmit interrupt mask. A read returns the current mask for the

UARTTXINTR interrupt.

On a write of 1, the mask of the

UARTTXINTR interrupt is set. A write of 0 clears the mask.

RXIM

Receive interrupt mask. A read returns the current mask for the

UARTRXINTR interrupt.

On a write of 1, the mask of the

UARTRXINTR interrupt is set. A write of 0 clears the mask.

3DSRMIM

nUARTDSR modem interrupt mask. A read returns the current mask for the UARTDSRINTR

interrupt.

On a write of 1, the mask of the UARTDSRINTR interrupt is set. A write of 0 clears the mask.

DCDMIM

nUARTDCD modem interrupt mask. A read returns the current mask for the UARTDCDINTR

interrupt.

On a write of 1, the mask of the

UARTDCDINTR interrupt is set. A write of 0 clears the mask.

1CTSMIM

nUARTCTS modem interrupt mask. A read returns the current mask for the UARTCTSINTR

interrupt.

On a write of 1, the mask of the UARTCTSINTR interrupt is set. A write of 0 clears the mask.

RIMIM

nUARTRI modem interrupt mask. A read returns the current mask for the UARTRIINTR

interrupt.

On a write of 1, the mask of the UARTRIINTR interrupt is set. A write of 0 clears the mask.

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