Apc5890, Aplus integrated circuits inc – Rainbow Electronics APC5890 User Manual
Page 9
APLUS INTEGRATED CIRCUITS INC.
APC5890
www.aplusinc.com.tw
TEL : 886-2-2782-9266
9
z
3FF6
:
P
ORT
_
C
[7..0]
DATA REGISTER
.
R
EAD AND WRITE
.
z
3FF7
:
P
ORT
_
C
[15..8]
DATA REGISTER
.
R
EAD AND WRITE
.
z
3FF8:
P
ORT
_
C
[7..0]
DIRECTION REGISTER
.
W
RITE ONLY
.
A
N
‘1’
IN THIS REGISTER WILL SET THE CORRESPONDING PIN OF PORT
_
C TO BE OUTPUT
.
T
HE DEFAULT VALUE FOR EACH BIT IS ZERO
.
z
3FF9:
P
ORT
_
C
[15..8]
DIRECTION REGISTER
.
W
RITE ONLY
.
A
N
‘1’
IN THIS REGISTER WILL SET THE CORRESPONDING PIN OF PORT
_
C TO BE OUTPUT
.
T
HE DEFAULT VALUE FOR EACH BIT IS ZERO
.
z
3FFA
:ADC
REGISTER
.
R
EAD ONLY
.
W
HEN THE TIMER B
NMI
OCCURS
,
THE
A/D
CONVERSION PROCESS STARTS AND THE
S/H
CIRCUIT STOP SAMPLING AND BEGIN HOLDING IT UNTIL THE
ADC
PROCESS IS FINISHED
.
T
HE
ADC
INT WILL GENERATE WHEN
ADC
PROCESS IS FINISHED
.
z
3FFB,3FFC
:….
NO USE
z
3FFD
:
……
NO USE
z
3FFE:
V
OICE CHANNEL
1
LOW BYTE AND SYSTEM CONTROL
3.
W
RITE ONLY
.
3FFE
0 1
BIT
-
0 S
EPARATE MODE FOR
DAC
OUTPUT
(
DEFAULT
)
M
IX MODE FOR
DAC
OUTPUT
.
BIT
-
1 S
EPARATE MODE FOR
PWM
OUTPUT
(
DEFAULT
)
M
IX MODE FOR
PWM
OUTPUT
BIT
-
2
NO USE
(
MUST
0)
BIT
-
3
NO USE
(
MUST
0)
BIT
–
7
~
4
VOICE CHANNEL
1
LOW NIBBLE BYTE
.
z
3FFF
:
V
OICE CHANNEL
1
HIGH BYTE
.
W
RITE ONLY
.
T
HE RESOLUTION OF VOICE CHANNEL
1
IS
12
BITS
($3FFF,$3FFE
BIT
7_4).
T
HIS REGISTER
WILL BE TRANSFERRED TO
PWM
PORT WHILE TIMER
_
B
NMI
HAPPEN IN SEPARATE MODE
.