Samsung SCM-7270 Service Manual page 58

Block Diagrams
No. I/O
Name
50 PL2
51 PL1
52 PL0
53 PK3
54 PK2
55 PK1/INT1
56 PK0/INT0
57 PJ3
58 PJ2
59 PJ1
60 PJ0
61 PI1/ADI5
62 PI0/ADI4
63 PH3/ADI3
64 PH2/ADI2
65 PH1/ADI1
66 PH0/ADI0
67 HOLD
68 SNS
69 LCTR
70 HCTR
71 EO3
72 SUBPD
73 Vdd
74 AMIN
75 FMIN
76 Vss
77 EO1
78 EO2
79 TEST1
80 Xout
9-10
Functions
O OPTION INPUT
O OPTION INPUT
O OPTION INPUT
I/O TUNING IND (SD)
I/O STEREO IND
I/O
I REMOCON
O SRS
O SW
O MW
O FM
I
I KEY DATA
I KEY DATA
I KEY DATA
I KEY DATA
I KEY DATA
I POWER OFF SENSE
I VOLTAGE SENSE
I
I FM AM IF INPUT
O
O
-
I AM INPUT
I FM INPUT
-
O TUNER VOLTAGE CONTROL
O TUNER VOLTAGE CONTROL
- -
O OSC 4.5MHz
Description
PORT for OPTION DATA
PORT for OPTION DATA
PORT for OPTION DATA
TUNING INDICATER ON/OFF
STEREO INDICATER ON/OFF
REMOCON SIGNAL INPUT
A/D INPUT (8 KEY)
A/D INPUT (8 KEY)
A/D INPUT (8 KEY)
A/D INPUT (8 KEY)
A/D INPUT (8 KEY)
FM & AM IF FREQUENCY INPUT PORT
AM OSC INPUT
FM OSC INPUT
FM TUNING VOLTAGE
AM TUNING VOLTAGE
-
OSC for SYSTEM CLOCK
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