• 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

Disc motor control signal output to the RF amplifier (IC101)

 

13

CLV–

O

(3-value output available depending on the command)

 

 

 

 

 

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

Track jump control signal output to the RF amplifier (IC101)

 

20

JP–

O

(3-value output available depending on the command)

 

 

 

 

 

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)

 

 

 

 

 

 

– 51 –

Page 41
Image 41
Technicolor - Thomson CDP-CX57 Defi, Vvss, Iset, Vvdd, Vss, TEST2, Clv+, Fseq, Vdd, C2F, TEST3, TEST4, Lvdd, Lcho, Lvss

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