JVC MX-GT90 Service Manual page 43

3. Pin function
Pin
Dymbol I/O
No.
1 BCLK O Not used
2 LRCK O Not used
SRDATA
3 O
Not used
4 DVDD1 Power supply (Digital)
DVSS1 Connected to GND
5
6 TX Digital audio interface output
O
CPU command clock signal input
7
MCLK I
(Data is latched at signal's rising point)
8 MDATA CPU command data input
I
9 MLD I
CPU command load signal input
10 SENSE Sense signal output
O
11 O Focus lock signal output Active :Low
FLOCK
O
12 TLOCK Tracking lock signal output Active :Low
sub-code/block/clock signal output
13 BLKCK O
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)
I Reset signal input (L:Reset)
18 RST
19 Not used
SMCK
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
FE
32 I Focus error signal input (Analog input)
33 TE Tracking error signal input (Analog input)
I
34
RF ENV I
RF envelope signal input (Analog input)
35
VDET I Vibration detect signal input (H:detect)
36 OFT Off track signal input (H:off track)
I
Track cross signal input
37 I
TRCRS
RF detect signal input (L:detect)
38
RFDET I
BDO input pin (L:detect)
39 BDO I
Laser ON signal output (H:on)
40 LDON O
Function
Pin
Symbol I/O
No.
Tracking error shunt signal output (H:shunt)
41 PLLF2 O
42
TOFS Not used
43
WVEL Not used
44 ARF I
RF signal input
45 IREF
I Reference current input pin
46 DRF
I Bias pin for DSL
I/O
47 Loop filter pin for DSL
DSLF
48 I/O Loop filter pin for PLL
PLLF
49
VCOF Not used
50 AVDD2 Power supply (Analog)
51 AVSS2
Connected to GND (Analog)
Not used
52 EFM
53
PCK/
O DSL balance output
DSL2
54 VCOF2
The external circuit is regulated for crystal.
55
SUBC Not used
56 SBCK
Not used
Connected to GND (for X'tal oscillation
57 VSS
circuit)
58
XI I Input of 16.9344MHz X'tal oscillation circuit
59 X2
O Output of X'tal oscillation circuit
60
VDD Power supply (for X'tal oscillation circuit)
61 BYTCK
Not used
62
CLDCK Not used
63 FCLK
Not used
64 IPPLAG
Not used
65 FLAG
Not used
66
CLVS
Not used
67
CRC Not used
68
DEMPH
Not used
69
RESY
Not used
70
IOSEL pull up
71
TEST pull up
72 AVDD1
Power supply (Digital)
73 OUT L O
Lch audio output
AVSS1
74
Connected to GND
75 OUT R O
Rch audio output
pull up
76 RSEL
77 CSEL
Connected to GND
78 PSEL
Connected to GND
79
MSEL
Connected to GND
80 SSEL
Pull up
MX-GT90
Function
1-43