Sharp DV-L70S Service Manual page 37

Pin No. Terminal name
88 BUS3
89 VDD
90 VSS
91 BUCK
92 /CCE
93 TEST4
94 /TEMOD
95 /RST
96 TEST0
97 /HSO
98 /UHSO
99 EMPH
100 LRCK
• Block Diagram
DVDD 76
RO 77
DVSS 78
DVR 79
LO 80
DVDD 81
TEST1 82
TEST2 83
TEST3 84
BUS0 85
BUS1 86
BUS2 87
BUS3 88
VDD 89
VSS 90
BUCK 91
/CCE 92
TEST4 93
/TEMOD 94
/RST 95
TEST0 96
/HSO 97
/UHSO 98
EMPH 99
LRCK 100
I/O
I/O
– Digital + power terminal.
– Digital ground terminal.
I Microcomputer interface clock input terminal.
I Microcomputer interface chip enable signal input terminal.
BUS0 to 3 is active in "L" state.
I Test terminal.
To be opened usually.
I Local test mode selection terminal.
I Reset signal input terminal.
Reset state: "L"
I Test terminal.
To be opened usually.
O Playback speed mode flag output terminal.
O
/UHSO /HSO
H H
H L
L H
L L
O Subcode Q data emphasis flag output terminal.
Emphasis ON: "H" OFF: "L"
Output polarity can be inverted by the command.
O Channel clock (44.1 kHz) output terminal.
L channel "L" R channel: "H"
Output polarity can be inverted by the command.
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
1Bit
LPF
DAC
Clock
genelator
Micon
Address circuit
inter
face
1Gk RAM
Correction
circuit
Digital out
Audio output
circuit
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Operation function
Playback speed
x1 speed playback
x2 speed playback
x4 speed playback
x8 speed playback
PWM
Servo control
D/A
Digital
ROM
equalizer
Automatic
A/D
RAM
adjusting circuit
+
–
CLV servo
Sync signal
protection
Data slicer
EFM
PWM
demodulation
VCO
Subcode
demodulation
circuit
PLL TMAX
Status
37
Remarks
Schmidt input
Schmidt input
Pull-up resistor
built in.
Pull-up resistor
built in.
Pull-up resistor
built in.
Pull-up resistor
built in.
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
DV-L70S
DV-L70BL
DV-L70W