JVC Mx-GT80 Service Manual page 45

3. Pin function
Pin
Dymbol I/O
No.
BCLK O Not used
1
2 LRCK Not used
O
SRDATA
3 O
Not used
4 Power supply (Digital)
DVDD1
DVSS1
5 Connected to GND
6 TX O Digital audio interface output
CPU command clock signal input
7 MCLK
I
(Data is latched at signal's rising point)
8 MDATA I CPU command data input
9 MLD I CPU command load signal input
10 SENSE Sense signal output
O
11 O Focus lock signal output Active :Low
FLOCK
12 TLOCK O
Tracking lock signal output Active :Low
sub-code/block/clock signal output
13 BLKCK O
14 I
SQCK Outside clock for sub-code Q resister input
15
SUBQ O Sub-code Q -code output
16 DMUTE Connected to GND
Status signal
STATUS
17 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 O
TVD Traverse drive output
23 Not used
PC
Spindle motor drive signal (Enforced
24
ECM O
mode output) 3-State
Spindle motor drive signal (Servo error
25 ECS
O
signal output)
26 O Kick pulse output
KICK
27 TRD
O Tracking drive output
28
FOD O Focus drive output
Reference voltage input pin for D/A
29 VREF I
output block (TVD,FOD,FBA,TBAL)
Focus Balance adjust signal output
30 FBAL
O
31 O
TBAL Tracking Balance adjust signal output
FE
32 I Focus error signal input (Analog input)
33 TE
I Tracking error signal input (Analog input)
34 RF ENV
I RF envelope signal input (Analog input)
35 I Vibration detect signal input (H:detect)
VDET
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
Pin
Function
No.
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
57
58
59
60
61
62
67
71
72
Symbol I/O
O Tracking error shunt signal output (H:shunt)
PLLF2
TOFS Not used
WVEL Not used
ARF I
RF signal input
IREF I Reference current input pin
DRF Bias pin for DSL
I
I/O Loop filter pin for DSL
DSLF
Loop filter pin for PLL
PLLF I/O
VCOF Not used
AVDD2 Power supply (Analog)
AVSS2
Connected to GND (Analog)
Not used
EFM
PCK/
O DSL balance output
DSL2
VCOF2 The external circuit is regulated for crystal.
SUBC
Not used
56 SBCK
Not used
Connected to GND (for X'tal oscillation
VSS
circuit)
XI I Input of 16.9344MHz X'tal oscillation circuit
X2 O
Output of X'tal oscillation circuit
VDD Power supply (for X'tal oscillation circuit)
BYTCK
Not used
CLDCK Not used
63 FCLK
Not used
IPPLAG
64
Not used
65
FLAG Not used
66 CLVS
Not used
CRC
Not used
68
DEMPH Not used
69
RESY Not used
70
IOSEL
pull up
TEST pull up
AVDD1
Power supply (Digital)
73 OUT L O
Lch audio output
74 AVSS1
Connected to GND
75
OUT R O Rch audio output
76 pull up
RSEL
77 CSEL
Connected to GND
78 PSEL
Connected to GND
79 MSEL
Connected to GND
80 SSEL
Pull up
MX-GT80/MXGT90
Function
1-45