DM-VH7
6
CIRCUIT DESCRIPTION
Pin No.
Name
I/O
Description
1
SCL
O
E2PROM clock
2
SDA
I/O
E2PROM data
3~11
-
O
Not used
12
VCC
-
VDD/power supply
13
-
-
Not used
14
VSS
-
GND
15~30
-
-
Not used
31
SRVMOD
O
X-Y position output
32~34
-
-
Not used
35
MUTE_BAR
O
Mute L:MUTE ON
36
POWER
O
Power ON/OFF (Periphery circuit power supply )
37
MUTE
O
Mute
38
ADDARST
O
AD / DA converter reset
39
EMPHA
O
Emphasis
40
LOADIN
O
Mecha. loading motor IN direction moving
41
LOADOUT
O
Mecha. loading motor OUT direction moving
42
AVSS
-
A/D GND
43
STTLMT
I
Pickup position switch
44
DISCIN
I
DISC insert detection
45
-
-
Not used
46
BITRATE
I
MD ucom communication speed changeover
47
HEADPOS
I
Head position (PLAY/REC) switch (AD)
48
IDSW
I
Mecha. DISC protection/high reflection/low reflection switch (AD)
49~52
-
-
Not used
53
Vref
-
A/D reference voltage
54
AVCC
-
A/D power supply
55,56
MODE0,1
I
VDD/mode (MD0,MD1,MD2)=(1,1,1)
57,58
-
-
Not used
59
RESET
I
Reset input
60
NMI
I
VDD/non mask able thrust
61
STBY
I
VDD/hardware standby input
62
VCC
-
VDD/power supply
63
XTAL
I
Clock inverse input
GND
Clock input
GND(Flash ROM writing permission)
VDD/mode (MD0,MD1,MD2)=(1,1,1)
Not used
Ucom CE
MD ucom transmit data
MD ucom receive data
DIN sub-Q thrust
Not used
EFM/ADIP SYNC thrust
82
XLAT
O
ACRIC/ATRAC en/decoder IC latch
83
SWDT
O
ACRIC/ATRAC en/decoder IC output data
84
SRDT
I
ACRIC/ATRAC en/decoder IC input data
85
SCLK
O
ACRIC/ATRAC en/decoder IC clock
86
HMUTE
O
Pull up/over writing head mute output (TX inverse)
87
SENS
I
ACRIC/ATRAC en/decoder IC SENS (inner status)
88
MNT3
I
ACRIC/ATRAC en/decoder IC spindle rock
89
MNT2
I
ACRIC/ATRAC en/decoder IC busy
90
MNT0
I
ACRIC/ATRAC en/decoder IC FOK
3-2 Pin description
DM-VH7(K)
COVER1,1P(
99.10.29
2:43
PM
y [ W 11
www. xiaoyu163. com
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