LC78647NT
-9-
Pin Function Table
Pin
No.
Pin Name
I/O
State after
Reset
Function
1
JITTC
A
—
Jitter detection capacitor connection pin
2
ADAVDD
—
Servo A/D, D/A power supply pin
3
ADAVSS
—
Servo A/D, D/A ground pin. Must be connected to 0V.
4
SLCO
AO
—
Slice level control charge pump output pin
5
SLCIST
AI
—
Slice level control charge pump current setting resistor connection pin
6
EFMIN
I
—
RF signal input pin
7RF
AO
ZHI
RF signal output pin
8
RFVDD
—
RF power supply pin
9FE
AO
ZHI
FE signal monitor pin
10
TEC
AO
—
TE signal LPF capacitor connection pin
11
TE
AO
ZHI
TE signal monitor pin
12
VREF
AO
RFVDD /2 VREF voltage output pin
13
REFI
AI
—
VREF reference voltage monitor pin
14
TIN1
AI
—
E signal input pin
15
FIN1
AI
—
A+C signal input pin
16
FIN2
AI
—
B+D signal input pin
17
TIN2
AI
F signal input pin
18
RFVSS
—
RF ground pin. Must be connected to 0V.
19
LDD
AO
—
Laser power control signal output pin
20
RFMONAOZHI
RF internal signal monitor pin
21
LDS
AI
Laser power detection signal input pin
22
TEST
I
Test input pin. Must be connected to 0V.
23
SBCK/FG
I
—
Subcode read clock input pin / FG signal input pin
Set pin function with a command. When not used, connect to 0V.
24
DEFECT
O
L
Defect signal monitor pin
25
V/PB
O
H
Rough servo/phase control automatic switching monitor output pin. “H”: Rough
servo, “L”: Phase servo
26
FSEQ
O
L
Synchronization signal detection output pin
“H” when synchronization signal detected from EFM signal and internally generated
synchronization signal match.
27
FOPWMF
O
L
Focus PWM output pin
28
FOPWMR
O
L
Focus PWM output pin
29
TRPWMF
O
L
Tracking PWM output pin
30
TRPWMR
O
L
Tracking PWM output pin
31
SPPWMF
O
L
Spindle PWM output pin
32
SPPWMR
O
L
Spindle PWM output pin
33
SLPWMF
O
L
Thread PWM output pin
34
SLPWMR
O
L
Thread PWM output pin
35
PWMCK
O
L
PWM carrier frequency output pin
36
VSS
—
Digital ground pin. Must be connected to 0V.
37
VDD1
—
Digital power supply pin
38
VDD3
—
Microcomputer I/F power supply pin
39
MONI1
O
L
Internal signal monitor pin 1
40
MONI2
O
L
Internal signal monitor pin 2
41
DOUT
O
Digital OUT output pin (EIAJ format)
42
MONI3
O
L
Internal signal monitor pin 3
43
MONI4
O
L
Internal signal monitor pin 4
44
MONI5
O
L
Internal signal monitor pin 5