Fujitsu MB90390 Series, Hardware Manual

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CHAPTER 18 8/10-BIT A/D CONVERTER
18.4.2 A/D Control Status Register 1 (ADCS1)
A/D control status register 1 (ADCS1) selects activation by software or activation
trigger, enables or disables interrupt requests, and indicates interrupt request status
and whether conversion is halted or in progress.
■
Upper Bits of the A/D Control Status Register 1 (ADCS1)
Figure 18.4-4 Configuration of the A/D Control Status Register 1 (ADCS1)
PAU S (ADC S 0) S T S 1 S TRT
Re s erved
Re s erved
S T S 0
INTE
0
1
Interr u pt re qu e s t en ab le b it
Di sab le s interr u pt re qu e s t o u tp u t.
En ab le s interr u pt re qu e s t o u tp u t.
BU S Y INT INTE
INT
Interr u pt re qu e s t fl a g b it
B us y b it
A/D conver s ion h as not b een completed.
A/D conver s ion h as b een completed.
A/D conver s ion i s h a lted.
A/D conver s ion i s in progre ss .
Cle a r s thi s b it.
No ch a nge, no effect on other b it s .
S top s the A/D conver s ion.
No ch a nge, no effect on other b it s .
0
1
Re a ding Writing
Re a ding Writing
BU S Y
0
1
S TRT
A/D conver s ion a ctiv a tion b it
(
v a lid only when a ctiv a ted b y s oftw a re (ADC2: EXT= 0))
Re s erved b it
Alw a y s write "0" to thi s b it.
R/W R/W R/W R/W R/W R/W R/W W
S T S 1 S T S 0 A/D a ctiv a tion s elect b it
0
0
1
1
0
1
0
1
Activ a tion b y s oftw a re.
Activ a tion b y extern a l trigger or s oftw a re.
Activ a tion b y 16- b it relo a d timer 1 o u tp u t
or s oftw a re.
Activ a tion b y extern a l trigger, 16- b it
relo a d timer 1 o u tp u t, or s oftw a re.
Doe s not a ctiv a te the A/D conver s ion.
Activ a te the A/D conver s ion f u nction.
0
1
PAU S
H a lt fl a g b it
(v a lid only when EI
2
O S i s us ed)
A/D conver s ion i s not h a lted.
A/D conver s ion i s h a lted.
0
1
0000 3 5
H
00000000
B
R/W
W
-
: Re a d ab le a nd writ ab le
: Write only
: Undefined
: Initi
a l v a l u e
15 b it
Addre ss
Initi a l v a l u e
14 1 3 12 11 10 9 8 7 0