cxd2548r Sony Electronics, cxd2548r Datasheet - Page 75

• Manufacturer Part Number: cxd2548r
• Description: Cd Digital Signal Processor With Built-in Digital Servo And Dac
• Manufacturer: Sony Electronics

[4] Description of Servo Signal Processing System Functions and Commands
§4-1. General Description of the Servo Signal Processing System
Focus servo
Tracking servo
Sled servo
FOK, MIRR, DFCT signals generation
Sampling rate:
Input range:
Output format:
Others:
Sampling rate:
Input range:
Output format:
Others:
Sampling rate:
Input range:
Output format:
Others:
RF signal sampling rate:
Input range:
Others:
(Voltages are the values for a 5V power supply.)
88.2kHz
2.5V center ±1.0V
7-bit PWM
Offset cancel
Focus bias adjustment
Focus search
Gain-down function
Defect countermeasure
Auto gain control
88.2kHz
2.5V center ±1.0V
7-bit PWM
Offset cancel
E:F balance adjustment
Track jump
Gain-up function
Defect countermeasure
Drive cancel
Auto gain control
Vibration countermeasure
345Hz
2.5V center ±1.0V
7-bit PWM
Sled move
1.4MHz
2.15V to 5.0V
RF zero level automatic measurement
The signal input from the RFDC pin is multiplied by a factor of 0.7 and loaded
into the A/D converter.
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CXD2548R