NXP Semiconductors /LPC408x_7x /UART0 /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 (DIRLOW)OINV 0 (RESERVED)RESERVED

AADEN=DISABLED, NMMEN=DISABLED, RXDIS=ENABLED, OINV=DIRLOW, DCTRL=DISABLE_AUTO_DIRECTI

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 has the parity bit = 1, generating a received data interrupt. See Section 18.6.16 RS-485/EIA-485 modes of operation.

RXDIS

Receiver enable.

0 (ENABLED): The receiver is enabled.

1 (DISABLED): The receiver is disabled.

AADEN

AAD enable.

0 (DISABLED): Auto Address Detect (AAD) is disabled.

1 (ENABLED): Auto Address Detect (AAD) is enabled.

RESERVED

Reserved. Read value is undefined, only zero should be written.

DCTRL

Direction control enable.

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 Un_OE pin.

0 (DIRLOW): 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 (DIRHIGH): 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. Read value is undefined, only zero should be written.

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