Vela 2000-0600, Инструкция по установке и эксплуатации

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Chapter 2
Decoder Command Set Guide
SCSI Decoder Command Set
This command set for the Vela CineCast HD decoder family performs per the
SCSI-2 Standard. Contact Vela for the latest firmware revision and complete
information on the command set, if needed.
SCSI Command Sequence from Power-up, SCSI
Reset, or Bus Device Reset
The CineCast HD decoder will report Check Condition to the first SCSI com-
mand (excluding
INQUIRY
and
REQUEST SENSE
). The host adapter (initiator), after
seeing the check condition, should respond by performing a
REQUEST SENSE
.
Per SCSI recommendations, the initiator should renegotiate for synchronous data
transfers and wide transfers. This is done to enable hot swap capability and proper
negotiation for Sync and Wide data.
The decoder will report Check Condition for all commands except
INQUIRY
and
REQUEST SENSE
from a Power-up, SCSI Reset, or Bus Device Reset.
SCSI Command Name Operation Code SCSI-2 Section Number
Inquiry 12h 8.2.5
Mode Sense 1Ah 8.2.10
Decoder Command 45h Custom Command
MPEG Play A5h Custom Command
Read Capacity 25h 9.2.7
Request Sense 03h 8.2.14
Test Unit Ready 00h 8.2.16
MPEG Write (10) 2Ah 9.2.21
Write Buffer 3Bh 8.2.17
Table 2-1. Command and Status Processing List