Rainbow Electronics APC5860 - Manual (Page 9)

APLUS INTEGRATED CIRCUITS INC.
APC5860
www.aplusinc.com.tw TEL : 886-2-2782-9266 9
B
IT 1: R ESERVED .
B
IT
2: = 1 V
OICE
0
BUFFER BE TRANSFERRED TO
DAC
PORT DIRECTLY
.(
DEFAULT
)
= 0 V OICE 0 BUFFER WILL BE TRANSFERRED TO DAC PORT WHEN TIMER _ B NMI HAPPEN .
B
IT
7-3 : R
ESERVED
.
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 .