NXP Semiconductors /LPC11Exx /USART /LCR

Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text

Interpret as LCR

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (5_BIT_CHARACTER_LENG)WLS0 (1_STOP_BIT_)SBS 0 (DISABLE_PARITY_GENER)PE 0 (ODD_PARITY_NUMBER_O)PS0 (DISABLE_BREAK_TRANSM)BC 0 (DISABLE_ACCESS_TO_DI)DLAB 0RESERVED

WLS=5_BIT_CHARACTER_LENG, DLAB=DISABLE_ACCESS_TO_DI, PE=DISABLE_PARITY_GENER, BC=DISABLE_BREAK_TRANSM, SBS=1_STOP_BIT_, PS=ODD_PARITY_NUMBER_O

Description

Line Control Register. Contains controls for frame formatting and break generation.

Fields

WLS

Word Length Select

0 (5_BIT_CHARACTER_LENG): 5-bit character length.

1 (6_BIT_CHARACTER_LENG): 6-bit character length.

2 (7_BIT_CHARACTER_LENG): 7-bit character length.

3 (8_BIT_CHARACTER_LENG): 8-bit character length.

SBS

Stop Bit Select

0 (1_STOP_BIT_): 1 stop bit.

1 (2_STOP_BITS_1_5_IF_): 2 stop bits (1.5 if LCR[1:0]=00).

PE

Parity Enable

0 (DISABLE_PARITY_GENER): Disable parity generation and checking.

1 (ENABLE_PARITY_GENERA): Enable parity generation and checking.

PS

Parity Select

0 (ODD_PARITY_NUMBER_O): Odd parity. Number of 1s in the transmitted character and the attached parity bit will be odd.

1 (EVEN_PARITY_NUMBER_): Even Parity. Number of 1s in the transmitted character and the attached parity bit will be even.

2 (FORCED_1_STICK_PARIT): Forced 1 stick parity.

3 (FORCED_0_STICK_PARIT): Forced 0 stick parity.

BC

Break Control

0 (DISABLE_BREAK_TRANSM): Disable break transmission.

1 (ENABLE_BREAK_TRANSMI): Enable break transmission. Output pin USART TXD is forced to logic 0 when LCR[6] is active high.

DLAB

Divisor Latch Access Bit

0 (DISABLE_ACCESS_TO_DI): Disable access to Divisor Latches.

1 (ENABLE_ACCESS_TO_DIV): Enable access to Divisor Latches.

RESERVED

Reserved

Links

()