JVC MX-J270V Service Manual page 41

3. Description
Pin
symbol I/O
No.
O
1 BCLK Not used
2 LRCK O Not used
3 SRDATA O
Not used
4
DVDD1 Power supply (Digital)
5 DVSS1 Connected to GND
6 TX O Digital audio interface output
Micom command clock signal input
7
MCLK
I
(Data is latched at signal's rising point)
8 MDATA Micom command data input
I
9 MLD I Micom command load signal input
10 SENSE Sence signal output
O
11 O Focus lock signal output Active :Low
FLOCK
O
12 TLOCK Tracking lock signal output Active :Low
13 BLKCK O sub-code - block - clock signal output
14
SQCK I
Outside clock for sub-code Q resister input
15 SUBQ Sub-code Q -code output
O
16 DMUTE Connected to GND
Status signal
17 STATUS O
(CRC,CUE,CLVS,TTSTOP,ECLV,SQOK)
Reset signal input (L:Reset)
18 RST I
19 SMCK Not used
20 Not used
PMCK
21 TRV O
Traverse enforced output
22 TVD O Traverse drive output
23 PC Not used
Spindle motor drive signal (Enforced
24
ECM
O
mode output) 3-State
Spindle motor drive signal (Servo error
25 ECS O
signal output)
26
KICK O Kick pulse output
27 TRD Tracking drive output
O
28 FOD
O Focus drive output
Reference voltage input pin for D/A
29 VREF I
output block (TVD,FOD,FBA,TBAL)
30 FBAL Focus Balance adjust signal output
O
31 O
TBAL Tracking Balance adjust signal output
32 FE I Focus error signal input(Analog input)
TE
33 Tracking error signal input(Analog input)
I
34 RF ENV
I RF envelope signal input(Analog input)
35 Vibration detect signal input(H:detect)
VDET I
36 OFT Off track signal input(H:off track)
I
Track cross signal input
37 TRCRS I
RF detect signal input(L:detect)
38
I
RFDET
BDO input pin(L:detect)
39 BDO I
Laser ON signal output(H:on)
40 LDON O
Description
Pin
symbol I/O
No.
41 Tracking error shunt signal output(H:shunt)
TES O
42 PLAY Not used
43
WVEL Not used
44 I
ARF RF signal input
45 IREF I Reference current input pin
46 DRF Bias pin for DSL
I
I/O
47 Loop filter pin for DSL
DSLF
Loop filter pin for PLL
48 PLLF I/O
49 VCOF Not used
50 AVDD2 Power supply(Analog)
51 AVSS2
Connected to GND(Analog)
Not used
52 EFM
53 PCK Not used
54 PDO Not used
55 Not used
SUBC
56 SBCK
Not used
Connected to GND(for X'tal oscillation
57 VSS
circuit)
Input of 16.9344MHz X'tal oscillation circuit
58 XI I
Output of X'tal oscillation circuit
59 X2 O
60 Power supply(for X'tal cscillation circuit)
VDD
61 BYTCK Not used
62 Not used
CLDCK
63 FLAG
Not used
IPPLAG
64 Not used
65 FLAG Not used
66 CLVS
Not used
67 Not used
CRC
68
DEMPH Not used
69 Not used
RESY
70 pull up
IOSEL
71 pull up
TEST
72 AVDD1 Power supply(Digital)
73 O Lch audio output
OUT L
74 AVSS1 Connected to GND
Rch audio output
75 OUT R O
pull up
76
RSEL
77 CSEL
Connected to GND
78 PSEL Connected to GND
79 MSEL
Connected to GND
80 SSEL
Pull up
MX-J270V
Description
1-41