Pin Assignment - LG GCE-8240B Service Manual

• Pin Assignment

Pin no Symbol
1 FVREF
2
3
4
5
6 HAVC
7
8
9
10
11 SWRF
12, 36, 66, 88 GND
13 WRF
14, 40, 64, 86 VCC
15 SBADO
16 BGIREF
17 AGC1C
18 AGC2C
19 AGC3C
20 ATFM
21 CAV_CNT
22 CAVC1
23 CAVC2
24 CAVC3
25 VCT2
26 VCT1
27 HDVC
28 DVC
29
30 DSPVCC
31 WFPDSH
32 RFPDSH
33 WBLSH
34 M/SPDSH
35 ROPCSH
41 XLAT
42 SDATA
43 SCLK
45 HOLDSW
46 AGCON
47 TFGCNT
48 WLDON
37 RECD
38 ATFG
44 ERGCNT
50 XTAND
51 XTOR
I/O Description
I Reference voltage of APC input signal
AIN I Input of Main beam signal(A)
BIN I Input of Main beam signal(B)
CIN I Input of Main beam signal(C)
DIN I Input of Main beam signal(D)
I Reference Voltage of Main and Side beams
EIN I Input of Side beam signal (E)
FIN I Input of Side beam signal (F)
GIN I Input of Side beam signal (G)
HIN I Input of Side beam signal (H)
O Output of Write RF sample signal
* Ground
O Output of Write RF signal
* Analog Power
O Output of SRFO and EFGH Balance signal
* Reference Voltage of Resister
* External Capacitor connection for AGC1 Detection Time Constant
* External Capacitor connection for AGC2 Detection Time Constant
* External Capacitor connection for AGC3 Detection Time Constant
O Output of Wobble signal
I Input of BPF control voltage for CAV mode
* External Capacitor connection for Peak Hold Detection Time Constant
* External Capacitor connection for Peak Hold Detection Time Constant
* External Capacitor connection for BPF control voltage smoothing
* Decoupling of VC
* Decoupling of DVC
O Output of DVC/2 Voltage
O Output of DSPVCC/2 Voltage
VC O Output of VCC/2 Voltage
* DSP Power
I Sample Pulse for Write APC Mode (H: Sample, L: Hold)
I Sample Pulse for Read APC Mode (H: Sample, L: Hold)
I Sample Pulse for Wobble signal (H: Sample, L: Hold)
I Sample Pulse for Main and Side Beams signal (H: Sample, L: Hold)
I Sample Pulse for Running OPC (H: Sample, L: Hold)
I Latch input
I Serial Data input
I Clock input for Serial Data transmission
I VWDC Hold control (H : Sample, L: Hold)
I AGC ON/OFF control (H:AGC ON, L: AGC RESET)
I Gain transmission control for TE and FE signal (H: 0 dB, L: -4dB)
I Transmission control for Write (H: LD ON, L: LD OFF)
O Output of Recorded Area Detection signal
O ATIPFG output
O Output of Erase gain transmission control
O Output of Out-of -Track Detection signal (AND)
O Output of Track Amplitude Detection signal (OR)
31