NXP Semiconductors /LPC43xx /C_CAN1 /IF1_CMDMSK_R

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 IF1_CMDMSK_R

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 (DATA_BYTES_4_7_UNCHA)DATA_B 0 (DATA_BYTES_0_3_UNCHA)DATA_A 0 (NEWDAT_BIT_REMAINS_U)NEWDAT 0 (INTPND_BIT_REMAINS_U)CLRINTPND 0 (CONTROL_BITS_UNCHANG)CTRL 0 (ARBITRATION_BITS_UNC)ARB 0 (MASK_BITS_UNCHANGED_)MASK 0 (WR_RD)WR_RD 0RESERVED

CLRINTPND=INTPND_BIT_REMAINS_U, DATA_B=DATA_BYTES_4_7_UNCHA, DATA_A=DATA_BYTES_0_3_UNCHA, MASK=MASK_BITS_UNCHANGED_, NEWDAT=NEWDAT_BIT_REMAINS_U, ARB=ARBITRATION_BITS_UNC, CTRL=CONTROL_BITS_UNCHANG

Description

Message interface command mask (read direction)

Fields

DATA_B

Access data bytes 4-7

0 (DATA_BYTES_4_7_UNCHA): data bytes 4-7 unchanged.

1 (TRANSFER_DATA_BYTES_): Transfer data bytes 4-7 to IFx message buffer register.

DATA_A

Access data bytes 0-3

0 (DATA_BYTES_0_3_UNCHA): data bytes 0-3 unchanged.

1 (TRANSFER_DATA_BYTES_): Transfer data bytes 0-3 to IFx message buffer.

NEWDAT

Access new data bit

0 (NEWDAT_BIT_REMAINS_U): NEWDAT bit remains unchanged. A read access to a message object can be combined with the reset of the control bits INTPND and NEWDAT in IF1/2_MCTRL. The values of these bits transferred to the IFx Message Control Register always reflect the status before resetting these bits.

1 (CLEAR_NEWDAT_BIT_IN_): Clear NEWDAT bit in the message object.

CLRINTPND

Clear interrupt pending bit.

0 (INTPND_BIT_REMAINS_U): INTPND bit remains unchanged.

1 (CLEAR_INTPND_BIT_IN_): Clear INTPND bit in the message object.

CTRL

Access control bits

0 (CONTROL_BITS_UNCHANG): Control bits unchanged.

1 (TRANSFER_CONTROL_BIT): Transfer control bits to IFx message buffer.

ARB

Access arbitration bits

0 (ARBITRATION_BITS_UNC): Arbitration bits unchanged.

1 (TRANSFER_IDENTIFIER): Transfer Identifier, DIR, XTD, and MSGVAL bits to IFx message buffer register.

MASK

Access mask bits

0 (MASK_BITS_UNCHANGED_): Mask bits unchanged.

1 (TRANSFER_IDENTIFIER_): Transfer Identifier MASK + MDIR + MXTD to IFx message buffer register.

WR_RD

Read transfer Transfer data from the message object addressed by the command request register to the selected message buffer registers CANIFn_CMDREQ.

RESERVED

reserved

Links

()