
MC68000/MC68008 Core
2-18
MC68302 USER’S MANUAL
MOTOROLA
Base + 840
Base + 842
Base + 844
Base + 846
Base + 848
! Base + 849
Base + 84A
Base + 84C
Base + 84E
Base + 850
Base + 852
Base + 854
Base + 856
Base + 858
! Base + 859
Base + 85A
Base + 85C
Base + 85E
TMR1
TRR1
TCR1
TCN1
RES
TER1
WRR
WCN
RES
TMR2
TRR2
TCR2
TCN2
RES
TER2
RES
RES
RES
16
16
16
16
8
8
16
16
16
16
16
16
16
8
8
16
16
16
Timer
Timer
Timer
Timer
Timer
Timer
WD
WD
Timer
Timer
Timer
Timer
Timer
Timer
Timer
Timer
Timer
Timer
Timer Unit 1 Mode Register
Timer Unit 1 Reference Register
Timer Unit 1 Capture Register
Timer Unit 1 Counter
Reserved
Timer Unit 1 Event Register
Watchdog Reference Register
Watchdog Counter
Reserved
Timer Unit 2 Mode Register
Timer Unit 2 Reference Register
Timer Unit 2 Capture Register
Timer Unit 2 Counter
Reserved
Timer Unit 2 Event Register
Reserved
Reserved
Reserved
0000
FFFF
0000
0000
00
FFFF
0000
0000
FFFF
0000
0000
00
Base + 860
CR
8
CP
Command Register
00
Base + 861
Base + 87F
Reserved
(Not Implemented)
Base + 880
Base + 882
Base + 884
Base + 886
! Base + 888
Base + 889
Base + 88A
Base + 88B
Base + 88C
Base + 88D
Base + 88E
RES
SCON1
SCM1
DSR1
SCCE1
RES
SCCM1
RES
SCCS1
RES
RES
16
16
16
16
8
8
8
8
8
8
16
SCC1
SCC1
SCC1
SCC1
SCC1
SCC1
SCC1
SCC1
SCC1
SCC1
SCC1
Reserved
SCC1 Configuration Register
SCC1 Mode Register
SCC1 Data Sync. Register
SCC1 Event Register
Reserved
SCC1 Mask Register
Reserved
SCC1 Status Register
Reserved
Reserved
0004
0000
7E7E
00
00
00
Base + 890
Base + 892
Base + 894
Base + 896
! Base + 898
Base + 899
Base + 89A
Base + 89B
Base + 89C
Base + 89D
Base + 89E
RES
SCON2
SCM2
DSR2
SCCE2
RES
SCCM2
RES
SCCS2
RES
RES
16
16
16
16
8
8
8
8
8
8
16
SCC2
SCC2
SCC2
SCC2
SCC2
SCC2
SCC2
SCC2
SCC2
SCC2
SCC2
Reserved
SCC2 Configuration Register
SCC2 Mode Register
SCC2 Data Sync. Register
SCC2 Event Register
Reserved
SCC2 Mask Register
Reserved
SCC2 Status Register
Reserved
0004
0000
7E7E
00
00
00
Table 2-9. Internal Registers