TC74A23F datasheet(9/20 Pages) TOSHIBA

部品番号	TC74A23F

部品情報	Toshiba CMOS Digital Integrated Circuit Silicon Monolithic

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メーカー	TOSHIBA [Toshiba Semiconductor]

ホームページ	http://www.semicon.toshiba.co.jp/eng

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9 / 20 page

TC94A23F

2002-02-06

9

Number

Symbol

Pin Name

Function and Operation

Remarks

43

DOUT

Digital output in.

44

SBSY

Sub code block sync output pin.

When sub code sync is detected, outputs

High at the S1 position.

45

SBOK

Sub code Q data CRCC result output pin.

When the result is OK, outputs High.

46, 75

VDD

47, 76

VSS

Power supply pins for CD digital block.

Normally, 5 V is applied.

When CD is not used (CD off), the power

supply can be set to off except to the

controller, enabling only the controller to

operate. At this time, 1 must be set in the

CDoff bit. If pins from 11 to 18 and 39 to 42

are set as CD control signal input/output pins,

setting the CDoff bit to 1 switches all the pins

to an output port.

48

P2VREF

2VREF pin for PLL block

¾

49

PDO

Outputs phase error signal between the EFM

and PLCK signals.

50

TMAX

TMAX detection result output pin. Selected by

command bit TMPS.

Longer than the specified cycle: Outputs

P2VREF.

Shorter than the specified cycle: Outputs Low

level (VSS).

Within the specified cycle: at high impedance

51

LPFN

Inverted input pin for low-pass filter amp.

52

LPFO

Output pin for low-pass filter amp.

53

PVREF

VREF pin for PLL block

54

VCOF

VCO filter pin

55

AVSS

CD processor control

input/output

Ground pin for analog block

¾

VDD

MVSS

P2VREF

PVREF

P2VREF

VCO

PVREF

AVDD

LPFN

LPFO

PVREF

VCOF

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