Service manual
37
DV-L70S
DV-L70BL
DV-L70W
Pin No. Terminal name I/O Operation function Remarks
88 BUS3 I/O
89 VDD – Digital + power terminal.
90 VSS – Digital ground terminal.
91 BUCK I Microcomputer interface clock input terminal. Schmidt input
92 /CCE I Microcomputer interface chip enable signal input terminal. Schmidt input
BUS0 to 3 is active in “L” state.
93 TEST4 I Test terminal. Pull-up resistor
To be opened usually. built in.
94 /TEMOD I Local test mode selection terminal. Pull-up resistor
built in.
95 /RST I Reset signal input terminal. Pull-up resistor
Reset state: “L” built in.
96 TEST0 I Test terminal. Pull-up resistor
To be opened usually. built in.
97 /HSO O Playback speed mode flag output terminal.
98 /UHSO O
99 EMPH O Subcode Q data emphasis flag output terminal.
Emphasis ON: “H” OFF: “L”
Output polarity can be inverted by the command.
100 LRCK O Channel clock (44.1 kHz) output terminal.
L channel “L” R channel: “H”
Output polarity can be inverted by the command.
/UHSO /HSO Playback speed
H H x1 speed playback
H L x2 speed playback
L H x4 speed playback
L L x8 speed playback
• Block Diagram
76DVDD
77RO
78DVSS
79DVR
80LO
81DVDD
82TEST1
83TEST2
84TEST3
85BUS0
86BUS1
87BUS2
88BUS3
89VDD
90VSS
91BUCK
92/CCE
93TEST4
94/TEMOD
95/RST
96TEST0
97/HSO
98/UHSO
99EMPH
100LRCK
50
DMO
49 FVO
48 FMO
47
TEBC
46
RFGC
45
VREF
44
TRO
43 FOO
42
TEZI
41 TEIN
40 TSIN
39 SBAD
38 FEIN
37 RFRP
36 RFZI
35
RFCT
34 AVDD
33
RFIN
32
SLCO
31 AVSS
30 VCOF
29 VCOREF
28 PVREF
27 LPFO
26 LPFN
1234
VSS
BCK
AOUT
5678
MBOB
IPF
SBOK
CLCK
91011
12
VDD
VSS
DATA
13
SBSY
14
SPCK
15
SPDA
16
COFS
17
MONIT
18
VDD
19
TESIO0
20
P2VREF
21
SPDO
22
PDOS
23
PDO
24
XMAXS
25
TMAX
SFSY
DOUT
75 74 73 72
XVDD
XO
XI
71
70
69
68
VDD
PXO
PXI
VSS
67
66
65
64
TESIO1
TESIN
/DACT
63
/DMOUT
62
IO3
61
IO2
60
IO1
59
IO0
58
VSS
57
VDD
56
SHC
55
SRCH
54
DFCT
53
FOON
52
SEL
51
2VREF
/CKSE
XVSS
LPF
1Bit
DAC
ROM
RAM
1Gk RAM
PWM
D/A
A/D
CLV servo
PWM
VCO
PLL TMAX
+
–
+
–
+
–
+
–
Clock
genelator
Servo control
Digital
equalizer
Automatic
adjusting circuit
Micon
inter
face
Digital out
Status
Correction
circuit
Sync signal
protection
EFM
demodulation
Data slicer
Subcode
demodulation
circuit
Audio output
circuit
Address circuit