
No. 6891-4/6
LC896431
Pin Functions
Pin No.
Pin Name
I/O
Function
1VDD2
—
Power supply pin
2
SHOCK
O
SHOCK/RFNG output pin
3
SLCO
O
HF signal slice level output pin
4
SLCIST
I
Bias resistance pin of slice level adjustment amplifier
5
EFMIN
I
HF signal input pin
6
RESETB
I
System reset
7
HFL
I
Track detection signal input pin
8
TEST2
I
Test input pin
9
PDO
O
VCEC current charge pump output pin
10
VCVSS
—
VCEC ground pin
11
FR
I
Bias resistance pin for oscillation frequency of VCEC
12
ISET
I
Bias resistance pin for current charge pump of VCEC
13
VCVDD
—
VCEC power supply pin
14
AVSS1
—
Digital servo ground pin
15
PEAK
I
PEAK signal input pin
16
BOTTOM
I
BOTTOM signal input pin
17
ABCD
I
Main beam light intensity signal input pin
18
TE
I
Tracking error signal input pin
19
FE
I
Focus error signal input pin
20
VC
I
Midpoint potential input pin
21
AVDD1
—
Digital servo power supply pin
22
DSW1
B*
Disk mode switch output
23
DSW0
B*
Disk mode switch output
24
SGC
B*
AGC control signal output pin
25
AOFFSET
B*
ABCD offset control signal output pin
26
FOFFSET
B*
Focus offset control signal output pin
27
TOFFSET
B*
Tracking offset control signal output pin
28
TBAL
B*
Tracking balance control signal output pin
29
LDREF
B*
Laser control signal output pin
30
VSS
—
Ground pin
31
VDD
—
Internal power supply pin
32
FBAL
B*
Focus balance control output pin
33
SPPWMF
B*
Spindle PWM output pin
34
SPPWMR
B*
Spindle PWM output pin
35
MD7
B
DRAM data input/output pin
36
MD6
B
DRAM data input/output pin
37
MD5
B
DRAM data input/output pin
38
MD4
B
DRAM data input/output pin
39
VDD2
—
Power supply pin
40
MD3
B
DRAM data input/output pin
41
MD2
B
DRAM data input/output pin
42
MD1
B
DRAM data input/output pin
43
MD0
B
DRAM data input/output pin
44
PCK
O
VCEC system clock signal output pin
45
VDD2
—
Power supply pin
46
VSS
—
Ground pin
47
DEFECT
B*
Defect signal input/output pin
48
MD15
B
DRAM data input/output pin
49
MD14
B
DRAM data input/output pin
50
MD13
B
DRAM data input/output pin
51
MD12
B
DRAM data input/output pin
52
VSS
—
Ground pin
53
MD11
B
DRAM data input/output pin
I/O
→ I: Input pin, O: Output pin, B: Bidirectional pin
Note: Do not leave VDD and VSS open, connect all to power supply, ground.
Continued on next page.