Samsung MM-18 Service Manual page 49

mm18(10) 3/23/98 4:17 PM
Block Diagrams
9-4 µ-COM (LC72362N-9416) : UIC1
No.
Name
Xin
1
2 TEST2
3 PG3SI/O
PG2/SO0
4
5 PG1/SCK
6 PG0
PF3/SI1
7
8 PF2/SO1
PF1/SCK1
9
PFO
10
11 PE3/S12
PE2/SO2
12
PE1/SCK2
13
14 PE0
PD3
15
16 PD2
17 PD1
PD0
18
19 PC3
20 PC2
PC1
21
22 PC0
23 PB3
PB2
24
25 PB1
PB0
26
PA3
27
28 PA2
PA1
29
PO0
30
31 Vdd
PQ0
32
33 PP3
34 PP2
PP1
35
36 PP0
37 PO3
PO2
38
39 PO1
40 PO0
9-10
Page 9-10
I/O Function
I OSC 4.5MHz
I -
I CLOSE SW
I LCD CONTROL DATA
I LCD CONTROL CLK
I LCD CONTROL CE
I OPEN SW
I VOLUME CONTROL DATA
I VOLUME CONTROL CLK
I VOLUME CONTROL CE
O SENSE
I SQDT
I SQCK
O F OK
O MLT
O MDATA
O MCK
O CLOSE
O OPEN
O MUTE
O RESET
O -
O MOTOR CONTROL
O FM MODE
O IF CNT
O HIGH SPEED MOTOR CTL
I TAPE PLAY
I TAPE REC
I TAPE REC
I LKFS SOSI
-
I/O CD TEST
O
O
O
O
O
O
O
O
Descriptions
OSC for SYSTEM CLOCK
DOOR CLOSE SENSE PORT
LCD CONTROL SIGNAL
LCD CONTROL SIGNAL
LCD CONTROL SIGNAL
DOOR OPEN SENSE PORT
VOLUME CONTROL SIGNAL
VOLUME CONTROL SIGNAL
VOLUME CONTROL SIGNAL
SERVO FUNCTION SIGNAL
SUBCODE "Q" CHANNEL DATA
CLOCK for "Q" DATA
FOCUS OF SIGNAL
LATCH for MAIN DATA
MAIN DATA
MAIN CLOCK
DOOR CLOSE CONTROL PORT
DOOR OPEN CONTROL PORT
CD MUTE CONTROL PORT
IC(SSP IC) RESET PORT
MODE KEY ON/OFF MODE:"H","L" CONVERSION
When SD SIGNAL is L MODE : ACTION
HIGH SPEED
CD SYNCHRO RECORDING CONTROL
INDICATE FRAME SYNCHRONIZATION STATUS
SUBCODE SYNCHRONIZATION SIGNAL
CD PROGRAM CHECK
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