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Theory of Device Operation
Printed
Circuit
Board
Host
ATA
HDC
Interface
(Hard Disk
Controller)
16 bit
SDRAM
Data
Buffer
RAM
Disk
Enclosure Head
Read
Head
Write
Head
4-6
FROM
Program
Memory
16 bit
Local Bus
RDC
Control
Signal
Read
and
Write
Data
Data
Buffer
Bus
RDC
Read
Channel
Write Data
Read Data
HDIC
(Read/Write
Preamplifier)
Read Data
Write Data
Figure 4.3 Circuit Configuration
MPU
(Micro
Processor
Unit)
HDIC
Control
Signal
Servo
Pulse
and
Position
Signal
Read Data
Voice
Coil
Motor
SVC
Control
Signal
SVC
Motor
Controller
and
Driver
Spindle
Motor
C141-E104-03EN
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