Technicolor - Thomson CDP-CX57 - Manual (Page 41)

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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)
7 FR I 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)