Microprocessor - Sony SMO-F551 Technical Manual

Host
System

Microprocessor

The microprocessor unit (MPU) has 512 kbytes(External) and 64 kbytes(Internal)
programmed ROM and 64 kbytes of working RAM on the MPU bus. This module
performs the following functions:
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SMO-F551 Technical Guide and Specifications
Sony Corporation 1998
Library Interface
ROM
512 KB
Optical
SCSI Bus Controller
Data Bus
Buffer Memory
(4 MB)
Power Line
Controller and Servo Block
Fig. 5.1: SMO-F551 Block Diagram
• SCSI modules management
• SCSI communication management
• Drive control via the SCSI
• Error recovery and management
• Diagnostic functions.
• Data Caching Management
RAM MPU
CPU
64 KB
Write Data
DSP E/A
DSP Bus Serial Data
Read C hannel
(Digital)
Read Data
Read C hannel
(Analog)
Loading
Motor
Control Signal
Bias
Magnet
Spindle
Motor
Optical Head
APC
LPC
(Fcs)
(Trk)
(LM)