NXP Semiconductors /LPC408x_7x /UART4 /RS485CTRL

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Interpret as RS485CTRL

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 (DISABLED)NMMEN 0 (ENABLED_)RXDIS 0 (DISABLED_)AADEN 0 (RESERVED)RESERVED 0 (DISABLE_AUTO_DIRECTI)DCTRL 0 (LOW_THE_DIRECTION_C)OINV 0 (RESERVED)RESERVED

DCTRL=DISABLE_AUTO_DIRECTI, NMMEN=DISABLED, RXDIS=ENABLED_, AADEN=DISABLED_, OINV=LOW_THE_DIRECTION_C

Description

RS-485/EIA-485 Control. Contains controls to configure various aspects of RS-485/EIA-485 modes.

Fields

NMMEN

NMM enable.

0 (DISABLED): RS-485/EIA-485 Normal Multidrop Mode (NMM) is disabled.

1 (ENABLED): RS-485/EIA-485 Normal Multidrop Mode (NMM) is enabled. In this mode, an address is detected when a received byte causes the USART to set the parity error and generate an interrupt. See Section 20.6.18 RS-485/EIA-485 modes of operation.

RXDIS

Receiver enable.

0 (ENABLED_): Enabled.

1 (DISABLED_): Disabled.

AADEN

AAD enable

0 (DISABLED_): Disabled.

1 (ENABLED_): Enabled.

RESERVED

Reserved.

DCTRL

Direction control for DIR pin.

0 (DISABLE_AUTO_DIRECTI): Disable Auto Direction Control.

1 (ENABLE_AUTO_DIRECTIO): Enable Auto Direction Control.

OINV

Direction control pin polarity. This bit reverses the polarity of the direction control signal on the DIR pin.

0 (LOW_THE_DIRECTION_C): Low. The direction control pin will be driven to logic 0 when the transmitter has data to be sent. It will be driven to logic 1 after the last bit of data has been transmitted.

1 (HIGH_THE_DIRECTION_): High. The direction control pin will be driven to logic 1 when the transmitter has data to be sent. It will be driven to logic 0 after the last bit of data has been transmitted.

RESERVED

Reserved, user software should not write ones to reserved bits. The value read from a reserved bit is not defined.

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