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UM10503
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© NXP B.V. 2015. All rights reserved.
User manual
Rev. 2.1 — 10 December 2015
1251 of 1441
NXP Semiconductors
UM10503
Chapter 45: LPC43xx/LPC43Sxx C_CAN
45.6.2.4 IF1 and IF2 message buffer registers
The bits of the Message Buffer registers mirror the Message Objects in the Message
RAM.
45.6.2.4.1
CAN message interface command mask 1 registers
5
ARB
Access arbitration bits
0
R/W
0
Arbitration bits unchanged.
1
Transfer Identifier, DIR, XTD, and MSGVAL
bits to IFx message buffer register.
6
MASK
Access mask bits
0
R/W
0
Mask bits unchanged.
1
Transfer Identifier MASK + MDIR + MXTD to
IFx message buffer register.
7
WR_RD
0
Read transfer
Transfer data from the message object
addressed by the command request register
to the selected message buffer registers
CANIFn_CMDREQ.
0
R/W
31:8
-
-
reserved
0
-
Table 1050.CAN message interface command mask registers read direction
(IF2_CMDMSK_R, address 0x400E 2084 (C_CAN0) and 0x400A 4084 (C_CAN1)) bit
description
…continued
Bit
Symbol
Value
Description
Reset
value
Access
Table 1051.CAN message interface command mask 1 registers (IF1_MSK1, address
0x400E 2028 (C_CAN0) and 0x400A 4028 (C_CAN1)) bit description
Bit
Symbol
Description
Reset
value
Access
15:0
MSK15_0
Identifier mask
0 = The corresponding bit in the identifier of the message
can not inhibit the match in the acceptance filtering.
1 = The corresponding identifier bit is used for
acceptance filtering.
0xFFFF R/W
31:16
-
reserved
0
-
Table 1052.CAN message interface command mask 1 registers (IF2_MSK1, address
0x400E 2088 (C_CAN0) and 0x400A 4088 (C_CAN1)) bit description
Bit
Symbol
Description
Reset
value
Access
15:0
MSK15_0
Identifier mask
0 = The corresponding bit in the identifier of the message
can not inhibit the match in the acceptance filtering.
1 = The corresponding identifier bit is used for
acceptance filtering.
0xFFFF R/W
31:16
-
reserved
0
-