Electronic system with servo management mechanism and method of operation thereof

摘要

An apparatus includes: a media; a head over the media; a head actuation motor (HAM) coupled to the head; control circuitry, coupled to the head actuation motor, including: a system-on-chip (SOC) configured to manage a control of the head actuation motor, a pulse width modulation (PWM) code bus, coupled to the SOC, configured to communicate the control of the HAM, and a power integrated circuit (PIC), coupled to the PWM code bus, configured to drive a HAM control signal.

主权项

1. An apparatus comprising:
media; a head over the media; a head actuation motor (HAM) coupled to the head; and control circuitry, coupled to the head actuation motor, including:
a system-on-chip (SOC) configured to manage a control of the head actuation motor,a pulse width modulation (PWM) code bus, coupled to the SOC, configured to communicate the control of the HAM, the PWM code bus including a PWM signal code and an activation signal, anda power integrated circuit (PIC), coupled to the PWM code bus, configured to drive a HAM control signal that controls the HAM based on the control of the HAM communicated by the PWM code signal code and the activation signal,wherein an activation period of the PWM signal code is offset from the activation signal by at least one-half of a cycle time of the activation signal.