Samsung MAX-557 - Basic Circuit Operation

3. Basic circuit operation
3-1. p-com(LC8866P) : UIC1
NO.
|
PIN
NAME
|
PORT
NAME
FUNCTION
ACTIVE
1
P52
DATA
PLL
/FUNC
O
2
PWM
CLK
PLL
/
FUNC
O
3
P20 PLL
CE
PLL
IC
CHIP
ENABLE
O
4
P21
SOL1
IF
COUNT
REQUEST
SIGNAL
O
H
5
P22
SD
TUNED
DETECTOR
SIGNAL
|
L
6
P23
STEREO
TUNER
STEREO
DETECTOR
SIGNAL
|
L
7
P24
HALL
A
A
DECK
AUTO
STOP
/
CNT
CHECK
|
H/L
8
P25
HALF
A
A
DECK
TAPE
|
L
9
P26
MODE
A
A
DECK
STATE
O
10
P27
F/REC
B
DECK
F/REC
CHECK
TAB
CHECK
|
L
1
TEST1
NON
USED
12
RES
RESET
13
XxT1
XT1
14
XT2
XT2
15
vss
vss
DIGITAL
GND
16
CF1
17
CF2
18
VDD
+5V
19
P80/ANO
A/D
KEY
AD
CONVERTOR
|
20
P81/AN1
A/D
KEY
AD
CONVERTOR
|
21
P82
/
AN2
HALL
B
B
DECK
AUTO
STOP/CNT
CHECK
|
H/L
22
P83
/
AN3
HALF
B
B
DECK
TAPE
|
L
23
P84
/
AN4
MODE
B
B
DECK
STATE
|
24
P85
/
ANS
R/REC
B
DECK
R/REC
TAB
CHECK
|
L
25
P86
/
ANG
AMPS
IN
AMPS
IN(SIGNAL
‘H’,
BLANK
‘L’)
|
26
P87
/
AN7
EQ
INPUT
EQ
AD
INPUT
|
27
P70
/
INTO
SCOR
|
28
P71/1INT1
29
P72
/INT2
POSNS
POWER
CORD
SENSE
|
L
30
P73
/
INT3
REMOCON
REMOCON
INPUT
SIGNAL
|
L
31
$0
/TO
G1
VFD
GRID
CONTROL
SIGNAL
O
32
$1/T1
G2
VFD
GRID
CONTROL
SIGNAL
O
33
$2
/T2
G3
VFD
GRID
CONTROL
SIGNAL
O
34
$3
/T3
G4
VFD
GRID
CONTROL
SIGNAL
O
35
S4/T4
G5
VFD
GRID
CONTROL
SIGNAL
O
36
$5
/T5
G6
VFD
GRID
CONTROL
SIGNAL
O
37
S6/T6
G7
VFD
GRID
CONTROL
SIGNAL
O
38
$7/T7
G8
VFD
GRID
CONTROL
SIGNAL
O
39
$8
/T8
G9
VFD
GRID
CONTROL
SIGNAL
O
40
$9
/T9
G10
VFD
GRID
CONTROL
SIGNAL
O
41
$10/T10
G11
VFD
GRID
CONTROL
SIGNAL
O
42
$11/T11
G12
VFD
GIRD
CONTROL
SIGNAL
O
43
$12
/T12
G13
VFD
GIRD
CONTROL
SIGNAL
O
44
$13
/T13
G14
VFD
GIRD
CONTROL
SIGNAL
O
45
$14/T14
G15
VFD
GIRD
CONTROL
SIGNAL
O
46
$15
/T15
G16
VFD
GIRD
CONTROL
SIGNAL
O
47
Vdd
Vpp
+5.6V
eo
MAX-550