CXA1372BQ Просмотр технического описания (PDF) - Sony Semiconductor

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производитель

CXA1372BQ

RF Signal Processing Servo Amplifier for CD Player

Sony Semiconductor 

CXA1372BQ/BS

RFI 39

Tracking error

(TZC) 42

[∗A]

Envelope

Detection

[∗D]

Waveform

Shaping

[∗B]

Waveform

Shaping

[∗E]

Edge Detection

D2

(MIRR)

[∗C]

[∗G]

DQ

[∗F]

BRK

CK

(Latch)

TM7

Low: open

High: make

[∗H]

Fig. 6. TM7 operation (brake circuit)

[∗A]

[∗B]

[∗C]

[∗D]

[∗E]

[∗F]

[∗G]

[∗H] 0V

From inner to outer track

From outer to inner track

Fig. 7. Internal waveform

("MIRR")

("TZC")

Braking is

applied from

here.

3. $2X (“TZC” at SENS (Pin 27))

These commands deal with turning the tracking servo and sled servo ON/OFF, and creating the jump pulse

and fast forward pulse during access operations.

D7

D6

D5

D4

D3

D2

D1

D0

0

0

1

0

Tracking

control

00: OFF

01: Servo ON

10: F-JUMP

11: R-JUMP

↓

TM1, TM3, TM4

Sled

control

00: OFF

01: Servo ON

10: F-FAST FORWARD

11: R-FAST FORWARD

↓

TM2, TM5, TM6

– 21 –

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