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UM10398 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved.
User manual Rev. 12.3 — 10 June 2014 302 of 547
NXP Semiconductors
UM10398
Chapter 16: LPC111x/LPC11Cxx C_CAN controller
16.6.3.3 CAN new data 1 register
This register contains the NEWDAT bits of message objects 16 to 1. By reading out the
NEWDAT bits, the CPU can check for which Message Object the data portion was
updated. The NEWDAT bit of a specific Message Object can be set/reset by the CPU via
the IFx Message Interface Registers or by the Message Handler after reception of a Data
Frame or after a successful transmission.
16.6.3.4 CAN new data 2 register
This register contains the NEWDAT bits of message objects 32 to 17. By reading out the
NEWDAT bits, the CPU can check for which Message Object the data portion was
updated. The NEWDAT bit of a specific Message Object can be set/reset by the CPU via
the IFx Message Interface Registers or by the Message Handler after reception of a Data
Frame or after a successful transmission.
Table 268. CAN transmission request 2 register (CANTXREQ2, address 0x4005 0104) bit
description
Bit Symbol Description Reset
value
Access
15:0 TXRQST32_17 Transmission request bit of message objects 32 to 17.
0 = This message object is not waiting for
transmission.
1 = The transmission of this message object is
requested and not yet done.
0x00 R
31:16 - Reserved - -
Table 269. CAN new data 1 register (CANND1, address 0x4005 0120) bit description
Bit Symbol Description Reset
value
Access
15:0 NEWDAT16_1 New data bits of message objects 16 to 1.
0 = No new data has been written into the data portion
of this Message Object by the Message Handler since
last time this flag was cleared by the CPU.
1 = The Message Handler or the CPU has written new
data into the data portion of this Message Object.
0x00 R
31:16 - Reserved - -
Table 270. CAN new data 2 register (CANND2, address 0x4005 0124) bit description
Bit Symbol Description Reset
value
Access
15:0 NEWDAT32_17 New data bits of message objects 32 to 17.
0 = No new data has been written into the data
portion of this Message Object by the Message
Handler since last time this flag was cleared by the
CPU.
1 = The Message Handler or the CPU has written
new data into the data portion of this Message
Object.
0x00 R
31:16 - Reserved - -