Disk unit and rotating motor control apparatus for recordable optical disk unit

A recordable optical disk unit comprising:

• a rotating motor control apparatus comprising:
• a zigzag synchronizing rotation control circuit controlling a rotation of a rotating motor in synchronism with a zigzag of a guide groove of a disk;
• a synchronizing signal detection circuit detecting an address synchronizing signal arranged as the zigzag of the guide groove for every predetermined distance in a linear direction of the guide groove;
• and
• an address synchronizing rotation control circuit controlling the rotation of the rotating motor in synchronism with the address synchronizing signal,
• said zigzag synchronizing rotation control circuit driving the rotating motor up to a predetermined position in front of a recording start address, and said address synchronizing rotation control circuit driving the rotating motor from the predetermined position in front of the recording start position,
• a data synchronizing rotation control circuit controlling the rotation of the rotating motor in synchronism with a recorded data signal;
• a phase synchronizing circuit synchronizing to a phase of the data signal;
• and
• a synchronous detection circuit detecting a synchronized state of the phase synchronizing circuit and outputting a lock signal, are built into a first digital signal processing LSI,
• and other processing means are built into a second digital signal processing LSI.