1.2 Drive Configuration
C156-E205-01EN
1-9
The control circuit section is divided into two parts: an ATAPI controller section
which deals with control between the ATAPI interface and drive interface, and a
drive circuit section which controls the drive.
(1) ATAPI controller circuit section
The ATAPI controller circuit's reliability is improved by large-scale integrated
circuit technology. The high-speed microprocessor (MPU) handles ATAPI
interface control and drive control such as drive read-and-write control and single-
beam control.
(2) Drive circuit section
The drive circuit section consists of the following circuits:
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Laser diode control circuit
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Signal reproduction circuit
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Servo/seek control circuit
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Rotation control circuit
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Drive miscellaneous control circuit
The DSP (digital signal processor) is used for the servo/seek control circuit to
reduce the circuit amount, therefore this circuit is a simple configuration.
The drive circuit section executes operations such as seek, erase, record, and
playback while the MPU controls the focus-tracking of the beam.
Содержание MCJ3230AP
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