Toshiba TLCS-900/H1 Series Manual page 73

3.5.3 Port 3 (P30 to P37)
Port 3 is an 8-bit general-purpose I/O port. Bits can be individually set as either inputs or
outputs by control register P3CR and function register P3FC.
In addition to functioning as a general-purpose I/O port, port 3 can also function as a data
bus (D24 to D31).
AM1
0
0
1
1
External write enable
D24 to D31
Port read data
D24 to D31
External read enable
AM0 Function Setting after Reset is Released
0
1
0
1
P3CR register
P3FC register
P3 register
S
1
0
Selector
Figure 3.5.5 Port 3
92CH21-71
Don't use this setting
Input port
Data bus (D24 to D31)
Input port
S
0
1
Selector
TMP92CH21
P30 to P37
(D24 to D31)
2009-06-19