17
EXTERNAL BUS INTERFACE
17-6
32192/32195/32196 Group Hardware Manual
Rev.1.10 REJ09B0123-0110 Apr.06.07
17.2 External Bus Interface Related Registers
b0
12
3456
b7
P00SMD
P01SMD
P02SMD
P03SMD
P04SMD
P05SMD
P06SMD
P07SMD
00
00000
0
P0 Peripheral Function Select Register (P0SMOD)
<Address: H’0080 0760>
<Upon exiting reset: H’00>
b
Bit Name
Function
R
W
0
P00SMD
0: DB0
R
W
Port P00 peripheral function select bit
1: TO21
1
P01SMD
0: DB1
R
W
Port P01 peripheral function select bit
1: TO22
2
P02SMD
0: DB2
R
W
Port P02 peripheral function select bit
1: TO23
3
P03SMD
0: DB3
R
W
Port P03 peripheral function select bit
1: TO24
4
P04SMD
0: DB4
R
W
Port P04 peripheral function select bit
1: TO25
5
P05SMD
0: DB5
R
W
Port P05 peripheral function select bit
1: TO26
6
P06SMD
0: DB6
R
W
Port P06 peripheral function select bit
1: TO27
7
P07SMD
0: DB7
R
W
Port P07 peripheral function select bit
1: TO28
Notes: During processor mode, settings of this register have no effect, and the ports function as external bus interface signal pins (DB0-DB7).
The value of this register can only be modified when the corresponding P0 operation mode register bit = 0 (set for port).
Then set the corresponging P0 operation mode register bit to "1."
During single-chip mode, selecting the external bus interface function is prohibited.