Chapter 6. Host Interface; Data Bus And Signal Lines - Sony SMO-F551 Technical Manual

Chapter 6. HOST INTERFACE

For connection with a host system, SMO-F551 uses the SCSI-2 (Small Computer
System Interface) which complies with specifications of ANSI X3.131-1994. In this
section, a summary of the drive's SCSI specification is described. Refer to the
SMO-F551 SCSI Specifications for more details.

Data Bus and Signal Lines

The SCSI interface uses the 18 signal lines as shown in Fig. 6.1. 9 signals are used
for control and the rest is for Data Bus. (Data Bus includes the optional parity signal.)
Data bus(bit 0-7,paritey bit)
Busy(BSY)
Select(SEL)
Reset(RST)
Control/Data(C/D)
Input/Output(I/O)
Message(MSG)
Request(REQ)
Acknowledge(ACK)
Attention(ATN)
Fig. 6.1: SCSI Data Bus and Signal Lines
S M O - F 5 5 1
SMO-F551 Technical Guide and Specifications
Sony Corporation 1998
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