Panasonic F77G User Manual page 497

16-3-2 Control Register (DACTR)
This is the 8-bit readable/writable register that controls the D/A conversion.
D/A Converter Control Register (DACTR)
7 6
DACTR
Figure 16-3-1 D/A Converter Control Register (DACTR : x'03FBE' R/W)
5 4 3 2
DABUSY DACH1 DACH0
1 0
(At reset : - - - - - 0 X X )
PA0 pin control
DACH0
0
General port
1
D/A output
DACH1
PA1 pin control
0
General port
1
D/A output
DA conversion enable flag
DABUSY
0
Stop D/A conversion operation
(ladder resistance OFF)
1
Enable D/A conversion operation
Chapter 16 D/A Converter
XVI - 5
Control Registers