UM10237_2 © NXP B.V. 2008. All rights reserved.
User manual Rev. 02 — 19 December 2008 496 o f 792
NXP Semiconductors UM10237
Chapter 18: LPC24XX CAN controllers CAN1/2
10.2 Central Receive Status Register (CANRxSR - 0xE004 0004)
10.3 Central Miscellaneous Status Register (CANMSR - 0xE004 0008)
15:10 - Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined. NA
16 TCS1 When 1, all requested transmissions have been completed successfully
by the CAN1 controller (same as TCS in CAN1GSR). 1
17:16 TCS2 When 1, all requested tr ansmissions have been completed successfully
by the CAN2 controller (same as TCS in CAN2GSR). 1
31:18 - Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined. NA
Table 438. Central Transit Status Register (CANTxSR - address 0xE004 0000) bit description
Bit Symbol Description Reset
Value
Table 439. Central Receiv e Status Register (CANRxSR - address 0xE0040004) bit
description
Bit Symbol Description Reset
Value
0 RS1 When 1, CAN1 is receiving a message (same as RS in CAN1GSR). 0
1 RS2 When 1, CAN2 is receiving a message (same as RS in CAN2GSR). 0
7:2 - Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined. NA
8 RB1 When 1, a received message is avai lable in the CAN1 controller (same
as RBS in CAN1GSR). 0
9 RB2 When 1, a received message is avai lable in the CAN2 controller (same
as RBS in CAN2GSR). 0
15:10 - Reserved, user software should not write ones to reserved bi ts. The
value read from a reserved bit is not defined. NA
16 DOS1 When 1, a message was lost because the preceding message to CAN1
controller was not read out quickly enough (same as DOS in CAN1GSR). 0
17:16 DOS2 When 1, a message was lost because the preceding message to CAN2
controller was not read out quickly enough (same as DOS in CAN2GSR). 0
31:18 - Reserved, user software should not write ones to reserved bi ts. The
value read from a reserved bit is not defined. NA
Table 440. Central Miscellaneous Status Register (CANMSR - address 0xE004 0008) bit
description
Bit Symbol Description Reset
Value
0 E1 When 1, one or both of the CAN1 Tx an d Rx Error Counters has reached
the limit set in the CAN1EWL register (same as ES in CAN1GSR) 0
1 E2 When 1, one or both of the CAN2 Tx an d Rx Error Counters has reached
the limit set in the CAN2EWL register (same as ES in CAN2GSR) 0
7:2 - Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined. NA