Z8018x Family
MPU User Manual
60
MMU Register Description
MMU Common/Bank Area Register (CBAR)
CBAR specifies boundaries within the Z8X180 64KB logical address
space for up to three areas; Common Area 0, Bank Area and Common
Area 1.
MMU Common/Bank Area Register (CBAR: 3AH)
Bit
7
6
5
4
3
2
1
0
Bit/Field
R/W
CA3
R/W
1
CA2
R/W
1
CA1
R/W
1
CA0
R/W
1
BA3
R/W
0
BA2
R/W
0
BA1
R/W
0
BA0
R/W
0
Reset
Note: R = Read W = Write X = Indeterminate ? = Not Applicable
Bit
Position Bit/Field R/W
Value Description
7–4
3–0
CA7–4
R/W
CA specifies the start (low) address (on 4KB boundaries)
for the Common Area 1. This also determines the last
address of the Bank Area.
BA3–0
R/W
BA specifies the start (low) address (on 4KB boundaries)
for the Bank Area. This also determines the last address
of the Common Area 0.
UM005001-ZMP0400
ZILOG [ ZILOG, INC. ]
