Sharp MD-MT80W(S) Service Manual page 44

MD-MT80W/90W/90/90C
IC201 VHiLR37815+-1 :Endec/Servo/Atrac (LR37815)
System LSI expansion output port (LR37815)
Pin No. Port Name Terminal Name Input/Output
56 EXPORT0 LEDON1
57 EXPORT1 LDCNT1
58 EXPORT2 LDCNT2
59 EXPORT3 EMPH1
78 EXPORT4 HDON
79 EXPORT5 OPTCNT
80 EXPORT6 DAPON
81 EXPORT7 ADPON
*1: List of TEST port settings
TEST1 TEST0
Details
H H Normal mode
H L No adjustment mode
L H Test mode
L L (Settings prohibited)
IC201 VHiLR37815+-1 :Endec/Servo/Atrac (LR37815)
TOTMON 76
TEMON 77
DCNT 78
OPTCNT 79
DAPON 80
ADPON 81
FOK 82
SENSE 83
COUT 84
MCCK 85
DINTX 86
VDD2 87
DGND 88
RSTX 89
SYD0 90
SYD1 91
SYD2 92
SYD3 93
SYD4 94
SYD5 95
SYD6 96
SYD7 97
SYWRX 98
SYRDX 99
SYRS 100
Output LED ON/OFF
Output Recording head raising-lowering control output 1
Output Recording head raising-lowering control output 2
Output Audio emphasis control output 1
Output Not used.
Output Optical digital input circuit control
Output D/A converter operation control output
Output A/D converter operation control output
*2: List of EMPH port settings
EMPH1 EMPH0
H H
H L
L H
L L
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
LR37815
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
Function
*3: List of LDCNT port settings
LDCNT1
Details
fs=32K: 'ON'
fs=48K: 'ON'
OFF
fs=44.1K: 'ON'
– 44 –
Remarks
'H':ON"L":OFF
See the separate table *3.
(Open)
See the separate table *2.
'H': Record electric current
'H': Circuit operation ON
'H': Operation ON
'H': Operation ON
LDCNT0
Details
H H Brake
H L Drive UP
L H Drive DOWN
L L Output OFF
EFMO
50
PLCK
49
ACRCER
48
RAA11
47
RAD0
46
RAD1
45
RAWEX
44
RARASX
43
RAA9
42
RAD3
41
RAD2
40
RACASX
39
DGND
38
RAOEX
37
RAA8
36
RAA7
35
RAA6
34
RAA5
33
RAA4
32
VDD2
31
RAA10
30
RAA0
29
RAA1
28
RAA2
27
RAA3
26