Sanyo DC-DA1000 Service Manual page 11

IC BLOCK DIAGRAM & DESCRIPTION
IC601 IC LC72338-9B55 (Single-Chip PLL + Controller)
XIN
XOUT
FMIN
AMIN
SNS
VDD
VSS
HCTR
LCTR
HOLD
TEST1
TEST2
PA0
PA1
PA2
PA3
PB0
PB1
PB2
PB3
PC0
PC1
PC2
PC3
PG0
SCK0/PG1
SO0/PG2
SI0/PG3
DIVIDER REFERENCE DIVIDER
1
80
74 1 / 16,1 / 17 PROGRAMMABLE DIVIDER
75
72 SNSFF
73
76
V-DET
1 / 2
70
UNIVERSAL
COUNTER
(20bits)
71
69
79
2
18
17
BUS
16 DRIV.
15
14
LATCH
13
BUS
12
DRIV. 8K x 16bits
11
10
LATCH
9
BUS ADDRESS DECODER
8
DRIV.
7
PROGRAM COUNTER
SIO
6
5
LATCH
BUS
4
DRIV.
3
SELECTER
PHASE
DETECTOR
UNLOCK
F/F
LCDA/B
LATCH
SEG
4
PLA
LCPA/B
RAM ADDRESS
512 x 4bits DECODER
BUS
DRIVER
ROM
INSTRUC-
TION
DECODER
BEEP
STACK
JUDGE
ALU
DAC
ADC
- 10 -
77 E01
78 E02
58
COM1
COMMON
57 COM2
DRIVER
56
COM3
60 Vdd1
59 Vdd2
55 S1
54
S2
53
S3
52 S4
4
51 S5
50 S6
49 S7
48 S8
7
47 S9
LCD
46 S10
LATCH
96 PORT
45 S11
DRIVER
44 S12
43
S13
42 S14
41
S15
40 S16
39
S17/PE0
LATCH
38
S18/PE1/SCK2
BUS
S19/PE2/SO2
37
DRIV.
36 S20/PE3/SI2
35 S21/PF0
LATCH
34
S22/PF1/SCK1
BUS
33
S23/PF2/SO1
DRIV.
32 S24/PF3/SI1
30 S25/PM0
LATCH
29 S26/PM1
BUS
DRIV. 28 S27/PM2
27 S28/PM3
26
MPX S29/PN0/BEEP
LATCH
25
BUS S30/PN1
DRIV.
24
S31/PN2
23
S32/PN3
MPX 61 PJ3/DAC3
LATCH
62
PJ2/DAC2
MPX
BUS
63
PJ1/DAC1
DRIV. MPX
64
PJ0/DAC0
MPX
19
PK3
LATCH
20 PK2
BUS
21
PK1/INT1
DRIV.
22 PK0/INT0
INTERRUPT
MPX
65
PH3/ADI3
66
LATCH PH2/ADI2
BUS
67 PH1/ADI1
DRIV.
68
PH0/ADI0