NXP Semiconductors LPC43 Series User Manual

Contents

NXP Semiconductors LPC43 Series User Manual Manual pdf 1091 page image

UM10503 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.User manual Rev. 1.3 — 6 July 2012 1091 of 1269NXP Semiconductors UM10503Chapter 42: LPC43xx C_CAN42.6.3.6 CAN interrupt pending 2 registerThis register contains the INTPND bits of message objects 32 to 17. By reading out theINTPND bits, the CPU can check for which Message Object an interrupt is pending. TheINTPND bit of a specific Message Object can be set/reset by the CPU via the IFxMessage Interface Registers or by the Message Handler after reception or after asuccessful transmission of a frame. This will also affect the value of INTPND in theInterrupt Register.42.6.3.7 CAN message valid 1 registerThis register contains the MSGVAL bits of message objects 16 to 1. By reading out theMSGVAL bits, the CPU can check which Message Object is valid. The MSGVAL bit of aspecific Message Object can be set/reset by the CPU via the IFx Message InterfaceRegisters.42.6.3.8 CAN message valid 2 registerThis register contains the MSGVAL bits of message objects 32 to 17. By reading out theMSGVAL bits, the CPU can check which Message Object is valid. The MSGVAL bit of aspecific Message Object can be set/reset by the CPU via the IFx Message InterfaceRegisters.Table 970. CAN interrupt pending 1 register (IR1, address 0x400E 2140 (C_CAN0) and0x400A 4140 (C_CAN1)) bit descriptionBit Symbol Description ResetvalueAccess15:0 INTPND16_1 Interrupt pending bits of message objects 16 to 1.0 = This message object is ignored by the messagehandler.1 = This message object is the source of an interrupt.0x00 R31:16 - Reserved - -Table 971. CAN interrupt pending 2 register (IR2, addresses 0x400E 2144 (C_CAN0) and0x400A 4144 (C_CAN1)) bit descriptionBit Symbol Description ResetvalueAccess15:0 INTPND32_17 Interrupt pending bits of message objects 32 to 17.0 = This message object is ignored by the messagehandler.1 = This message object is the source of an interrupt.0x00 R31:16 - Reserved - -Table 972. CAN message valid 1 register (MSGV1, addresses 0x400E 2160 (C_CAN0) and0x400A 4160 (C_CAN1)) bit descriptionBit Symbol Description ResetvalueAccess15:0 MSGVAL16_1 Message valid bits of message objects 16 to 1.0 = This message object is ignored by the messagehandler.1 = This message object is configured and should beconsidered by the message handler.0x00 R31:16 - Reserved - -