LG CED-8081B Service Manual page 46

• Pin Assignment
Pin No. Name
1 AVDD
2 FPDI
3 FVREF
4 FPDO
5 WREF
6 VWDC
7 VWDC1
8 VWDC2
9 VWDCN
10 RREF
11 VRDCN
12 VRDC
13 VRDC1
14 RBIAS
15 AVSS
16 2VREF
17 AVDD
18 CEO
19 CEP
20 CEN
21 RP1
22 RPBC
23 RPCT
24 RP2
25 RPIN
26 RPDC
27 BS
28 TE
29 TEIN
30 FE
31 VREF
32 TEBC
33 EQRFP
34 EQRFN
35 AGCCAP1
36 AGCCAP2
37 AGCCAP3
38 AVDD1
39 ATFM
40 AVSS
41 ATFG
42 BPFCLK
32
Analog Digital Pin Description
Type Type
P Analog power
I Laser power monitor output
I APC reference voltage
O Laser power monitor output
I/O Power setting input/output voltage for write APC
O Laser driver control output for write.
O Auxiliary laser driver control output for write.
O Auxiliary laser driver control output for write.
I/O Laser driver control input for write.
I/O Power setting input/output voltage for read APC
I/O Laser driver control input for read.
O Laser driver control output for read.
O Laser driver control output for CDRW read
I/O Reference current setting pin
G Analog ground
I/O 2x Reference voltage (4.2V)
P Analog power
O Center position signal
I/O Gain and fc setting node for center position signal
I/O Gain and fc setting node for center position signal
O RF ripple signal
I Ripple balance
I Ripple center input
O RF ripple signal
I AC-coupled RP input
O DC-coupled RP signal output
O Beam strength
O Tracking Error output
I External bypass TE input
O Focus error output
I/O Reference voltage (2.1V)
I Tracking Error Balance
O Equalized RF output (+ve)
O Equalized RF output (-ve)
I/O AGC1 gain control node
I/O AGC2 gain control node
I/O AGC3 gain control node
P Analog power
O Wobble signal output
G Analog ground
O Digital wobble signal output.
I ATIP band-pass filter clock input.