For Clock - Sanyo GCD 2000 Service Manual

IC BLOCK DIAGRAM
IC251 pPD75306
(Micro Processor)
PIN
No.
SIGNAL NAME PORT NAME
DESCRIPTION
1/0
CONNECT
41 SI
P03/Sl/SBl
Data In from Main Micro Processor (pPD751 12) I MAIN /JCON
42
NC PIO/lNTO Not Used (Ground)
I vs~
43 NC P1l/lNTl
Not Used (Ground) I vs~
44
NC P12/lNT2 Not Used (Ground) I
V5S
45 NC P13/TIO
Not Used (Ground) I V5S
i
46 WIDE P20/PTIOO
Select Signal ifor AM Signal Type Wide (HIGH) lNarrow (LOW)
o
TUNER
1
47
S PCON P21 Tuner Powefi Signal (For S Series)
i
ACTIVE : HIGH LEVEL
o
TUNER
48
MUTE P22 I PCL
Tuner Mute Signal ACTIVE : HIGH LEVEL
o
TUNER
49 BUSY P23/BUZ
Busy Signal Out to Main Micro Processor (,uPD651 {7) o
MAIN ~CON
I
50
so
P30 / LCDCL Initial Set for User = Country (Open or Ground) I
51 S1
P31 /SYNC
Initial Set for User = Country (Open or Ground) ' I
52 S2
P32
Initial Set for User = Country (Open or Ground) I
53 S3
(FM MUTE) P33
Select Signal for FM Auto Mute
SET (Open) /NOT (VsJ I
54 VDD
'LID
Power Supply + 5V
'DD
55 NC
XT1
Not Used (Ground) OSC X'tal Terminal
for Main Clock I V$$
56 NC XT2
Not Used (Open) OSC X'tal Terminal for Main Clock o
57 NC
NC Non Connection
58 xl X'tal In (4.194304 MHz)
i
I
I
59
x2
X'tal Out (4.194304
MHz)
o
60 S4(12H/24H) P60/KRo Select Signal for CLOCK 24H (Open)/ 12H (V$s) I
61 S5 (AM IF) P61 /KR1
Select Signal for AM IF
SET (Open) /NOT (VJ I TUNER
62 S6 (D /S)
P62/KR2
Select Signal for D & S Series SET (Open) /NOT (V~J
I
63 D MONO P63 / KR3
Compulsion Monaural (For D Series)
ACTIVE : HIGH LEVEL
o
TUNER
64 D DO P701KR4 Data Signal from LM7001 (For D Series) o
TUNER
65 D CL
P71 IKR5
Data Signal from LM7001 (For D Series)
o TUNER
66 D CE P72/KR6 Data Signal from LM7001 (For D Series)
o
TUNER
67 D PCON P73 I KR7 Tuner Power Signal (For D Series) ACTIVE : HIGH LEVEL
o
TUNER
68
RESET RESET
System Reset Signal
RESET CIRCUIT
69 SEGO so Segment of Liquid Crystal Display
LCD
70 SEG1 S1 Segment of Liquid Crystal Display
LCD
71 SEG2 S2 Segment of Liquid Crystal Display
LCD
72 SEG3 S3
Segment of Liquid Crystal Display
LCD
73 SEG4 S4 Segment of Liquid Crystal Display
LCD
74 SEG5 S5 Segment of Liquid Crystal Display
LCD
75 SEG6 S6 Segment of Liquid Crystal Display
LCD
76 SEG7 S7 Segment of Liquid
Crystal Display LCD
77 SEG8
S8
Segment of Liquid Crystal Display
LCD
78
SEG9
S9 Segment of Liquid Crystal Display
LCD
79
SEG1O
Slo
Segment of Liquid Crystal Display LCD
80
SEG11
Sll
Segment of Liquid
Crystal Display
LCD
-28-