LG GSA-4167B Service Manual page 62

Encoder Interface Pin List
Pin Name Pin No. I/O
IP1LPPIN 150
IP2MIRR 149
WOBSIG 154
LOWZB 153
IDGATE 152
RFHLD 151
WRGATE2 134
WBLSH 129
MPDSH 128
WFPDSH 127
RFPDSH 126
TCSHSPBLV 125
WRGATEB 138
SRFH 137
SRFL 136
WRSTOP 135
LNDTRK 155
NRZI 143
NRZIB 142
DCLK 140
DCLKB 141
ADIPVR1 101
ADIPVRT 102
ADIPINP 103
Serial Communication Interface Pin List
Pin Name Pin No.
LDBUSY 124
WDEN 123
RFDEN 122
SDATA 121
SCLK 120
destination
I AFE
I AFE
I AFE
O AFE
O AFE
O AFE
O AFE
O AFE
O AFE
O AFE
O AFE
O AFE
O PU
O PU
I PU
O AFE/PU
AO PU
AO PU
AO External Cpmponents
AO External Cpmponents
AI AFE
I/O destination
IO LDD
O LDD
O AFE
IO AFE/LDD
O AFE/LDD
Function
PID area identification signal/LPP input signal
PID area identification signal/MIRR signal
Wobble signal input
Input impedance switch control signal/SPDSH; running
OPC sampling pulse (Pit top)
ID/data switch signal
VFO3 holding signal and track center signal sample &
hold signal
Write gate signal output
Wobble signal sampling pulse
Main beam sampling pulse
Laser control sampling pulse
(Front monitor write/erase block)
Laser control sampling pulse
(Front monitor read block)
VFO1 track center signal sample & hold pulse;
/SPBLVL running OPC sampling pulse (Pit end)
Write gate signal
I- V amplifier gain switch (HI side)
/I- V amplifier gain switch (for binary)
I- V amplifier gain switch (Low side)
Write stop gate signal
Land/groove switch
NRZI output after modulation (normal phase)
NRZI output after modulation (counter phase)
NRZI sync clock (counter phase)
NRZI sync clock (normal phase)
AD related pin for ADIP detection
AD related pin for ADIP detection
ADIP detect input pin
Function
LDD serial IF busy also functions as the CPU general port 1-0
LDD microcomputer I/F (transfer enable signal)
AFE microcomputer I/F (transfer enablesignal)
AFE/LDD microcomputer I/F (transfer data signal 3Vsystem)
AFE/LDD microcomputer I/F (transfer clock signal)
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