DS80C400 Maxim, DS80C400 Datasheet - Page 80

• Manufacturer Part Number: DS80C400
• Description: The DS80C400 network microcontroller offers the highest integration available in an 8051 device
• Manufacturer: Maxim

Modification of the CAN registers located in MOVX memory is protected through the SWINT bit. Consult the
description of this bit in the High-Speed Microcontroller User’s Guide: Network Microcontroller Supplement for more
information. The CAN module contains a block of control/status/mask registers, 14 functionally identical message
centers, plus a 15th message center that is receive-only and incorporates a buffered FIFO.
organization of the message centers located in MOVX space.
Table 20. CAN Controller MOVX Memory Map
CONTROL/STATUS/MASK REGISTERS
CAN 0 MESSAGE CENTER 1
CAN 0 MESSAGE CENTERS 2 to 14
CAN 0 MESSAGE CENTER 15
*The first byte of the CAN 0 MOVX memory address is dependent on the setting of the CMA bit (MCON.5) CMA = 0, xx = 00; CMA = 1, xx = FF.
REGISTER
C0M1D0–7
C0M15D0—
C0M15M0
C0M15M1
C0M15M2
C0M15M3
C0M1AR0
C0M1AR1
C0M1AR2
C0M1AR3
C0M15AR0
C0M15AR1
C0M15AR2
C0M15AR3
C0SGM0
C0SGM1
C0EGM0
C0EGM1
C0EGM2
C0EGM3
C0M15D7
C0MID0
C0MID1
C0MA0
C0MA1
C0M1F
C0M15F
C0BT0
C0BT1
—
DTBYC3
M0AA7
M1AA7
MID07
MID17
DTBYC3
SJW1
SMP
ID28
ID20
ID28
ID20
ID12
ID28
ID20
ID12
ID4
ID4
7
DTBYC2
TSEG26
M0AA6
M1AA6
DTBYC2
MID06
MID16
SJW0
ID27
ID19
ID27
ID19
ID11
ID27
ID19
ID11
ID3
ID3
MESSAGE CENTER 10 REGISTERS (similar to Message Center 1)
MESSAGE CENTER 11 REGISTERS (similar to Message Center 1)
MESSAGE CENTER 12 REGISTERS (similar to Message Center 1)
MESSAGE CENTER 13 REGISTERS (similar to Message Center 1)
MESSAGE CENTER 14 REGISTERS (similar to Message Center 1)
6
MESSAGE CENTER 2 REGISTERS (similar to Message Center 1)
MESSAGE CENTER 3 REGISTERS (similar to Message Center 1)
MESSAGE CENTER 4 REGISTERS (similar to Message Center 1)
MESSAGE CENTER 5 REGISTERS (similar to Message Center 1)
MESSAGE CENTER 6 REGISTERS (similar to Message Center 1)
MESSAGE CENTER 7 REGISTERS (similar to Message Center 1)
MESSAGE CENTER 8 REGISTERS (similar to Message Center 1)
MESSAGE CENTER 9 REGISTERS (similar to Message Center 1)
CAN 0 MESSAGE 1 ARBITRATION REGISTER 3
CAN 0 MESSAGE 15 ARBITRATION REGISTER 3
CAN 0 MESSAGE 1 ARBITRATION REGISTER 0
CAN 0 MESSAGE 1 ARBITRATION REGISTER 1
CAN 0 MESSAGE 1 ARBITRATION REGISTER 2
CAN 0 MESSAGE 15 ARBITRATION REGISTER 0
CAN 0 MESSAGE 15 ARBITRATION REGISTER 1
CAN 0 MESSAGE 15 ARBITRATION REGISTER 2
TSEG25
DTBYC1
M0AA5
M1AA5
DTBYC1
MID05
MID15
BPR5
ID26
ID18
ID26
ID18
ID10
ID26
ID18
ID10
ID2
ID2
5
CAN 0 MESSAGE 1 DATA BYTES 0 to 7
CAN 0 MESSAGE 15 DATA BYTE 0 to 7
DTBYC0
TSEG24
M0AA4
M1AA4
DTBYC0
MID04
MID14
BPR4
ID25
ID25
ID17
ID25
ID17
ID9
ID1
ID9
ID1
4
0
RESERVED
RESERVED
Reserved
Reserved
80 of 97
TSEG13
M0AA3
M1AA3
MID03
MID13
BPR3
ID24
ID24
ID16
ID24
ID16
ID8
ID0
ID8
ID0
T/R
3
0
0
TSEG12
M0AA2
M1AA2
MID02
MID12
EX/ST
BPR2
EX/ST
ID23
ID23
ID15
ID23
ID15
ID7
ID7
2
0
0
0
TSEG11
M0AA1
M1AA1
MID01
MID11
MEME
MEME
BPR1
ID22
ID22
ID14
ID22
ID14
ID6
ID6
1
0
0
0
TSEG10
M0AA0
M1AA0
WTOE
MDME
WTOE
MDME
MID00
MID10
BPR0
ID21
ID21
ID13
ID21
ID13
ID5
ID5
0
0
0
0
Table 20
xxDBA0h–AFh
xxDBB0h–BFh
xxDBC0h–CFh
xxDBD0h–DFh
xxDBE0h–EFh
xxDB17h–1Eh
xxDBF0h–F1h
xxDBF7h–FEh
xxDB10h–11h
xxDB20h–2Fh
xxDB30h–3Fh
xxDB40h–4Fh
xxDB50h–5Fh
xxDB60h–6Fh
xxDB70h–7Fh
xxDB80h–8Fh
xxDB90h–9Fh
MOVX DATA
ADDRESS*
describes the
xxDB0Ah
xxDB0Bh
xxDB0Ch
xxDB0Dh
xxDB0Eh
xxDBFFh
xxDB00h
xxDB01h
xxDB02h
xxDB03h
xxDB04h
xxDB05h
xxDB06h
xxDB07h
xxDB08h
xxDB09h
xxDB0Fh
xxDB12h
xxDB13h
xxDB14h
xxDB15h
xxDB16h
xxDB1Fh
xxDBF2h
xxDBF3h
xxDBF4h
xxDBF5h
xxDBF6h