BLUENRG-2 datasheet(84/190 Pages) STMICROELECTRONICS

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Functional details

BlueNRG-2

84/190

DocID030675 Rev 2

Table 87: UART - IFLS register description: address offset UART_BASE_ADDR+0x34

Bit

Field name

Reset

Description

2:0

TXIFLSEL

0x2

Transmit interrupt FIFO level select. This bit field selects the

trigger points for TX FIFO interrupt:

000b: Interrupt when FIFO ≥ 1/64 empty.

001b: Interrupt when FIFO ≥ 1/32 empty.

010b: Interrupt when FIFO ≥ 1/16 empty.

011b: Interrupt when FIFO ≥ 1/8 empty.

100b: Interrupt when FIFO ≥ 1/4 empty.

101b: Interrupt when FIFO ≥ 1/2 empty.

110b: Interrupt when FIFO ≥ 3/4 empty.

5:3

RXIFLSEL

0x2

Receive interrupt FIFO level select. This bit field selects the

trigger points for RX FIFO interrupt:

000b: Interrupt when FIFO ≥ 1/64 full.

001b: Interrupt when FIFO ≥ 1/32 full.

010b: Interrupt when FIFO ≥ 1/16 full.

011b: Interrupt when FIFO ≥ 1/8 full.

100b: Interrupt when FIFO ≥ 1/4 full.

101b: Interrupt when FIFO ≥ 1/2 full.

110b: Interrupt when FIFO ≥ 3/4 full.

31:6

RESERVED

0x0

RESERVED

Table 88: UART - IMSC register description: address offset UART_BASE_ADDR+0x38

Bit

Field name

Reset

Description

RESERVED

0x0

RESERVED

CTSMIM

0x0

Clear to send modem interrupt mask. On a read, the current

mask for the CTSMIM interrupt is returned.

0: Clears the mask (interrupt is disabled).

1: Sets the mask (interrupt is enabled).

3:2

RESERVED

0x0

RESERVED

RXIM

0x0

Receive interrupt mask. On a read, the current mask for the

RXIM interrupt is returned.

0: Clears the mask (interrupt is disabled).

1: Sets the mask (interrupt is enabled).

TXIM

0x0

Transmit interrupt mask. On a read, the current mask for the

TXIM interrupt is returned.

0: Clears the mask (interrupt is disabled).

1: Sets the mask (interrupt is enabled).

RTIM

0x0

Receive timeout interrupt mask. On a read, the current mask

for the RTIM interrupt is returned.

0: Clears the mask (interrupt is disabled).

1: Sets the mask (interrupt is enabled).

FEIM

0x0

Framing error interrupt mask. On a read, the current mask for

the FEIM interrupt is returned.

0: Clears the mask (interrupt is disabled).

1: Sets the mask (interrupt is enabled).

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