MAX17841B datasheet(29/33 Pages) MAXIM

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CONFIGURATION_2 REGISTER

ADDRESS

BITS

DEFAULT

NAME

DESCRIPTION

0x0E(Write)

0x0F (Read)

RX_Raw_Data

ReceiveRawDataMode:DisablesManchester

decoding of the received data. In this mode, there is

one data byte stored for every one character received

(instead of every two received).

TX_Raw_Data

TransmitRawDataMode:DisablesManchester

encoding of transmitted data. In this mode, each data

byte is transmitted as one character (instead of two

characters).

TX_Preambles

Transmit Preambles Mode: Transmits preambles

continuously. This mode takes precedence over all

transmit modes except Transmit Pause mode.

TX_Queue

TransmitQueueMode:Enablestransmissionofthe

messageloadedintheTransmitQueueIF1)thereis

sufficientspaceintheReceiveBufferforthemessage

(RX_Full_Statusisfalse)OR2)thelimitationson

messagelengthareremoved(TX_Unlimitedisset).

TX_Odd_Parity

TransmitOddParityMode:Transmitscharacterswith

odd parity. Since the UART protocol uses even parity,

this mode can be used to test the system’s ability to

detectparityerrors.Evenparityisdefault.

TX_Pause

Transmit Pause Mode: Places the transmitter into

idlestateoncetheUARThasfinishedtransmitting

thecurrentbyte,however,theTX_Busy_Statusand

TX_Idle_Statusbitsremainunchanged.Transmission

resumeswhenthisbitiscleared.Note:Thismode

takes precedence over all other transmit modes

(TransmitPreambles,TransmitQueue,andKeep-

Alive modes).

TX_No_Stop

TransmitNoStopMode:Transmitsmessageswithout

a stop character. By sending subsequent messages

withtheTX_No_Preamblebitset,aframedmessage

ofindefinitelengthcanbeconstructed.The

TX_Unlimitedbitmustbesetformessagesgreater

than 62 bytes.

TX_No_Preamble

TransmitNoPreambleMode:Transmitsmessages

withoutapreamble.Byfirstsendingamessagein

whichtheTX_No_Stopbitissetandthensending

messages with this bit set, a framed message of

indefinitelengthcanbeconstructed.However,if

the preceding message is terminated with a stop

character (end of frame), then the data sent in this

mode is unframed (no preamble) and is not stored in

thereceivebuffer.

Maxim Integrated │ 29

MAX17841B

Automotive SPI Communication Interface (ASCI)

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