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• BD BOARD IC102 LC78622E (DIGITAL SIGNAL PROCESSOR, DIGITAL FILTER, D/A CONVERTER)
Pin No. Pin Name I/O Function
1 DEFI I
Defect detection signal input from the RF amplifier (IC101)
2
TAI I
PLL test input terminal Not used (fixed at “L”)
3 PDO O
PLL phase comparison output for external VCO control
4 VVSS —
Ground terminal (internal VCO system)
5 ISET I
Connected to a current adjusting resistor for the PDO output
6 VVDD —
Power supply terminal (+5V) (internal VCO system)
7FRI
Adjusts the VCO frequency range
8 VSS —
Ground terminal (digital system)
9 EFMO O
Slice level control to EFM signal output
10 EFMIN I
Playback EFM RF signal input from the RF amplifier (IC101)
11 TEST2 I
Test input terminal (fixed at “L” in this set)
12 CLV+ O
13 CLV– O
14 V/P O
Sled servo on/off control signal output to the RF amplifier (IC101) Rough servo/phase control
automatic switching monitor output “H”: rough servo, “L”: phase servo
15 HFL I
Tracking detection signal input from the RF amplifier (IC101) (Schmitt input) HFL (High
Frequency Level) is used to determine whether the main beam is positioned on a pit or mirror
16 TES I
Tracking error signal input from the RF amplifier (IC101) (schmitt input)
17 TOFF O
Tracking off control signal output to the RF amplifier (IC101)
Tracking becomes off when TOFF is “H”
18 TGL O
Tracking gain control signal output to the RF amplifier (IC101) (Raises gain when “L”)
19 JP+ O
20 JP– O
21 PCK O
EFM data playback clock monitor output terminal (4.3218 MHz when phase is locked)
22 FSEQ O
Sync signal detection output terminal (“H” when a sync signal detected from the EFM signal and
that generated internally coincide)
23 VDD —
Power supply terminal (+5V) (digital system)
24 CONT1 I
Guard frame sync input terminal
25 CONT2 I
Sled servo on/off control signal input terminal
26
CONT3 O
Sled servo drive control signal output terminal
27
CONT4 I
Sled limit-in detect switch (S101) input terminal The optical pick-up is inner position when “L”
28
CONT5 O
Not used (open)
29
EMPH O
De-emphasis control signal output terminal
The de-emphasis disc is being played back when “H” Not used (open)
30
C2F O
C2PO (error condition monitor) signal output terminal
31
DOUT O
Digital signal output terminal (EIAJ format)
32
TEST3 I
Test input terminal (fixed at “L” in this set)
33
TEST4 I
Test input terminal (fixed at “L” in this set)
34
NC —
Not used (open)
35
MUTEL O
Line muting on/off control signal output terminal (for L-ch side) “H”: muting on
36
LVDD —
Power supply terminal (+5V) (L-ch D/A converter system)
37
LCHO O
Analog audio signal output from the internal D/A converter block (for L-ch side)
38
LVSS —
Ground terminal (L-ch D/A converter system)
39
RVSS —
Ground terminal (R-ch D/A converter system)
40
RCHO O
Analog audio signal output from the internal D/A converter block (for R-ch side)
41
RVDD —
Power supply terminal (+5V) (R-ch D/A converter system)
Disc motor control signal output to the RF amplifier (IC101)
(3-value output available depending on the command)
Track jump control signal output to the RF amplifier (IC101)
(3-value output available depending on the command)