DM-VH7(K) COVER1,1P( 99.10.29 2:43 PM y[W 11
DM-VH7
CIRCUIT DESCRIPTION
3-2 Pin description
Pin No.NameI/ODescription
1SCLOE2PROM clock
2SDAI/OE2PROM data
3~11-ONot used
12VCC-VDD/power supply
13--Not used
14VSS-GND
15~30--Not used
31SRVMODOX-Y position output
32~34--Not used
35MUTE_BAROMute L:MUTE ON
36POWEROPower ON/OFF (Periphery circuit power supply )
37MUTEOMute
38ADDARSTOAD / DA converter reset
39EMPHAOEmphasis
40LOADINOMecha. loading motor IN direction moving
41LOADOUTOMecha. loading motor OUT direction moving
42AVSS-A/D GND
43STTLMTIPickup position switch
44DISCINIDISC insert detection
45--Not used
46BITRATEIMD ucom communication speed changeover
47HEADPOSIHead position (PLAY/REC) switch (AD)
48IDSWIMecha. DISC protection/high reflection/low reflection switch (AD)
49~52--Not used
53Vref-A/D reference voltage
54AVCC-A/D power supply
55,56MODE0,1IVDD/mode (MD0,MD1,MD2)=(1,1,1)
57,58--Not used
59RESETIReset input
60NMIIVDD/non mask able thrust
61STBYIVDD/hardware standby input
62VCC-VDD/power supply
63XTALIClock inverse input
64VSS-GND
65EXTAL-Clock input
66FWEIGND(Flash ROM writing permission)
67MODE2IVDD/mode (MD0,MD1,MD2)=(1,1,1)
68~74--Not used
75CEIUcom CE
76CTXDOMD ucom transmit data
77CRXDIMD ucom receive data
78DQSYIDIN sub-Q thrust
79,80--Not used
81SQSYIEFM/ADIP SYNC thrust
82XLATOACRIC/ATRAC en/decoder IC latch
83SWDTOACRIC/ATRAC en/decoder IC output data
84SRDTIACRIC/ATRAC en/decoder IC input data
85SCLKOACRIC/ATRAC en/decoder IC clock
86HMUTEOPull up/over writing head mute output (TX inverse)
87SENSIACRIC/ATRAC en/decoder IC SENS (inner status)
88MNT3IACRIC/ATRAC en/decoder IC spindle rock
89MNT2IACRIC/ATRAC en/decoder IC busy
90MNT0IACRIC/ATRAC en/decoder IC FOK
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