LG CED-8083B Service Manual page 54

CD-SERVO Interface
Pin No. Pin Name
2 DMO
3 SLO
207 FOO
208 TRO
194 TEBC
197 FE
198 TE
201 BS
202 RPBC
203 RP
191 RX
192 TX
204 CE
142 LDON
193 TC
137 FLAGA
138 FLAGB
139 FLAGC
140 FLAGD
CD-DSP PIN
Pin No. Pin Name
163 EFM
162 ASY
161 EFMR1
160 EFMR2
159 EFMR3
136 MONIT
Type
O Spindle Motor Servo Output
A
O Sled Servo Output
A
O Focus Servo Output : Focus servo feedback signal
A
O Tracking Servo Output : Tracking servo feedback signal
A
O Tracking Error Balance Control
A
I Focus Error
A
I Tracking Error
A
I Beam Strength : This input from the preamplifier is the sum of the E and F
A
photodiode outputs when using a 3-beam pick-up
O Ripple Balance Control
A
I Ripple of RF
A
I RP Zero Crossing : Used for fine search
S
I TE Zero Crossing : Track crossing signal input used in conjunction with RX to
S
perform fine searches
I Center Position Error
A
O Laser Diode On
I Track Count Input : High-frequency track crossing signal input used to perfrom
S
rough searches and to increment the internal track counter.
O Servo Monitor Flag A : FLAGA is used to output one of four internal servo signals.
FLAGA can also be used as a general output port.
O Servo Monitor Flag B : FLAGA is used to output one of four internal servo signals.
FLAGB can also be used as a general output port.
O Servo Monitor Flag C : FLAGA is used to output one of four internal servo signals.
FLAGC can also be used as a general output port.
O Servo Monitor Flag D : FLAGA is used to output one of four internal servo signals.
FLAGD can also be used as a general output port.
Type
I EFM Analog Data
A
O Asymmetry DAC Output
A
I EFM Analog Data Bias 1
A
I EFM Analog Data Bias 2
A
I EFM Analog Data Bias 3
A
O CD-DSP Monitor Output : MONIT is used to output several internal CD-DSP signals
Description
Description
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