Nxp Semiconductors UM10237 用户手册
UM10237_2
© NXP B.V. 2008. All rights reserved.
User manual
Rev. 02 — 19 December 2008
473 of 792
NXP Semiconductors
UM10237
Chapter 18: LPC24XX CAN controllers CAN1/2
7.
Memory map of the CAN block
The CAN Controllers and Acceptance Filter occupy a number of APB slots, as follows:
8.
Register description
CAN block implements the registers shown in
detailed descriptions follow.
Table 416. Memory map of the CAN block
Address Range
Used for
0xE003 8000 - 0xE003 87FF
Acceptance Filter RAM.
0xE003 C000 - 0xE003 C017
Acceptance Filter Registers.
0xE004 0000 - 0xE004 000B
Central CAN Registers.
0xE004 4000 - 0xE004 405F
CAN Controller 1 Registers.
0xE004 8000 - 0xE004 805F
CAN Controller 2 Registers.
Table 417. Summary of CAN acceptance filter and central CAN registers
Name
Description
Access Reset Value
Address
AFMR
Acceptance Filter Register
R/W
1
0xE003 C000
SFF_sa
Standard Frame Individual Start Address Register
R/W
0
0xE003 C004
SFF_GRP_sa Standard Frame Group Start Address Register
R/W
0
0xE003 C008
EFF_sa
Extended Frame Start Address Register
R/W
0
0xE003 C00C
EFF_GRP_sa Extended Frame Group Start Address Register
R/W
0
0xE003 C010
ENDofTable
End of AF Tables register
R/W
0
0xE003 C014
LUTerrAd
LUT Error Address register
RO
0
0xE003 C018
LUTerr
LUT Error Register
RO
0
0xE003 C01C
FCANIE
FullCAN interrupt enable register
R/W
0
0xE003 C020
FCANIC0
FullCAN interrupt and capture register 0
R/W
0
0xE003 C024
FCANIC1
FullCAN interrupt and capture register 1
R/W
0
0xE003 C028
CANTxSR
CAN Central Transmit Status Register
RO
0x0003 0300 0xE004 0000
CANRxSR
CAN Central Receive Status Register
RO
0
0xE004 0004
CANMSR
CAN Central Miscellaneous Register
RO
0
0xE004 0008
Table 418. Summary of CAN1 and CAN2 controller registers
Generic
Name
Name
Description
Access CAN1 Register
Address & Name
CAN2 Register
Address & Name
Address & Name
MOD
Controls the operating mode of the CAN
Controller.
Controller.
R/W
CAN1MOD - 0xE004 4000
CAN2MOD - 0xE004 8000
CMR
Command bits that affect the state of the
CAN Controller
CAN Controller
WO
CAN1CMR - 0xE004 4004
CAN2CMR - 0xE004 8004
GSR
Global Controller Status and Error Counters RO
CAN1GSR - 0xE004 4008
CAN2GSR - 0xE004 8008
ICR
Interrupt status, Arbitration Lost Capture,
Error Code Capture
Error Code Capture
RO
CAN1ICR - 0xE004 400C
CAN2ICR - 0xE004 800C
IER
Interrupt Enable
R/W
CAN1IER - 0xE004 4010
CAN2IER - 0xE004 8010
BTR
Bus Timing
R/W
CAN1BTR - 0xE004 4014
CAN2BTR - 0xE004 8014