cxd2548r Sony Electronics, cxd2548r Datasheet - Page 70

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

3-9. Digital CLV
Fig. 3-11 shows the block diagram. Digital CLV outputs MDS error and MDP error with PWM, with sampling
frequency increased up to 130Hz during normal-speed playback in CLVS, CLVP and other modes.
In addition, the digital spindle servo gain is variable.
Digital CLV
CLVS U/D: Up/down signal from CLVS servo
MDS error: Frequency error for CLVP servo
MDP error: Phase error for CLVP servo
PWMI:
KICK, BRAKE, STOP
CLVS U/D
CLV P/S
DCLVMD, LPWR
Spindle drive signal from the microcomputer
Fig. 3-11. Block Diagram
Gain
MDS
2/1 MUX
– 70 –
MDS Error
Measure
Over Sampling
Noise Shape
Modulation
Filter-2
MDS
Mode Select
PWMI
MDP
CLV P/S
MUX
1/2
Over Sampling
MDP Error
Measure
Filter-1
Gain
MDP
CXD2548R