15
15-6
EXTERNAL BUS INTERFACE
32180 Group User’s Manual (Rev.1.0)
15.2 External Bus Interface Related Registers
P3 Operation Mode Register (P3MOD)
<Address: H
’0080 0743>9 1011121314b15b8
P30MD P31MD P32MD P33MD P34MD P35MD P36MD P37MD
00000000
<After reset: H’00>
b Bit Name Function R W
8 P30MD 0: P30 R W
Port P30 operation mode bit 1: A15
9 P31MD 0: P31 R W
Port P31 operation mode bit 1: A16
10 P32MD 0: P32 R W
Port P32 operation mode bit 1: A17
11 P33MD 0: P33 R W
Port P33 operation mode bit 1: A18
12 P34MD 0: P34 R W
Port P34 operation mode bit 1: A19
13 P35MD 0: P35 R W
Port P35 operation mode bit 1: A20
14 P36MD 0: P36 R W
Port P36 operation mode bit 1: A21
15 P37MD 0: P37 R W
Port P37 operation mode bit 1: A22
Note: • Settings of the P3 Operation Mode Register are effective only when the CPU is operating in external extension mode.
P4 Operation Mode Register (P4MOD)
<Address: H
’0080 0744>123456b7b0
P44MD P45MD P46MD P47MD
0000
<After reset: H’00>
b Bit Name Function R W
0–3 No function assigned. Fix to "0". 00
4 P44MD 0: P44 R W
Port P44 operation mode bit 1: CS0#
5 P45MD 0: P45 R W
Port P45 operation mode bit 1: CS1#
6 P46MD 0: P46 R W
Port P46 operation mode bit 1: A13
7 P47MD 0: P47 R W
Port P47 operation mode bit 1: A14
Note: • Settings of the P4 Operation Mode Register are effective only when the CPU is operating in external extension mode.
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