-42-
IC DESCRIPTION -1/2 (IC, LC78646E) -1/2
1
SLCO
O
Slice level control output.
2
SLCIST
I
SLCO output current adjustment resistor connection pin.
3
EFMIN
I
RF signal input pin.
4
RF
O
RF monitor pin.
5
RFVDD
–
RF power supply pin.
6
RFVSS
–
RF ground pin. (Connected to 0V)
7
FIN1
I
A+C signal input pin.
8
FIN2
I
B+D signal input pin.
9
TIN1
I
E signal input pin.
10
TIN2
I
F signal input pin.
11
VREF
O
VREF voltage output pin.
12
REF1
I
Reference voltage setting pin.
13
FE
O
FE signal monitor pin.
14
TEC
O
TE signal low pass filter capacitor connection pin.
15
TE
O
TE signal monitor pin.
16
RFMON
O
RF internal signal monitor pin. (Not used)
17
JITTC
–
Jitter detection capacitor connection pin.
18
ADAVDD
–
Servo A/D, D/A supply pin.
19
ADAVSS
–
Servo A/D, D/A ground pin. (Connected to 0V)
20
TDO
O
Tracking control output pin. D/A output.
21
FDO
O
Focus control output pin. D/A output.
22
SPDO
O
Spindle control output pin. D/A output.
23
SLDO
O
Sled control output pin. D/A output.
24
GPDAC
O
Servo D/A general purpose output pin. (Not used)
25
CONT4
I/O
General purpose input/output pin 4. (Used as a CD driver mute pin) (Not used)
26
CONT5
I/O
General purpose input/output pin 5. (Not used)
27
SBCK/CONT6
I/O
Sub-code read clock input pin / General purpose input/output pin 6.
(Used as a CD pickup inside limit switch pin)
28
SBCK/FG
I
Sub-code read clock input pin / FG signal input pin/external emphasis setting pin.
Set to command pin function. (Connected to 0V)
29
DEFECT
O
Defect pin. (Not used)
30
V/P
O
Rough servo/phase control automatic switching monitor output pin.
"H" for rough servo and "L" for phase servo. (Not used)
Synchronization signal detection output pin.
31
FSEQ
O
Outputs a high level when the synchronization signal detected from the EFM signal and the
internally generated synchronization signal agree. (Not used)
32 ~ 36
MONI1 ~ MONI5
O
Internal signal monitor pin 1 ~ 5. (Not used)
37
VSS
–
Digital ground pin. (Connected to 0V)
38
VDD
–
Digital power supply pin.
39
DOUT
O
Digital OUT output pin. (Not used)
40
TEST
I
Test input pin. (Connected to 0V)
Pin No.
Pin Name
I/O
Description