CXD3003 datasheet(121/137 Pages) SONY

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CXD3003R

• Input coefficient inversion when SFID = 1 and THID = 1

The preset coefficients for the TRK filter are negative for input and positive for output. With this, the error input

and servo that outputs reversed phase drive can be hypothesized.

K19

TRK Filter

K22

Negative input coefficient

Positive output coefficient

∗

K00

SLD Filter

K05

Negative input coefficient

Positive output coefficient

K40

TRK Hold Filter

K45

Positive input coefficient

Positive output coefficient

TRK Hold

When SFID = 1, the TRK filter negative input coefficient is applied to the SLD filter, so invert the SLD input

coefficient (K00) code. (For example, inverting the code for coefficient K00: E0h results in 60h.)

For the same reason, when THID = 1, invert the TRK hold input coefficient (K40) code.

K19

TRK Filter

K22

Negative input coefficient

Positive output coefficient

∗

K00

SLD Filter

K05

Positive input coefficient

Positive output coefficient

K40

TRK Hold Filter

K45

Negative input coefficient

Positive output coefficient

TRK Hold

M0D

∗ for TRK servo gain normal

Please refer also to § 5-21. Filter Composition.

CXD3003 Datasheet(PDF) 121 Page - Sony Corporation

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