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Host Interface
4-4 C156-E224-01EN
4.2 Various Processes
4.2.1 Reset response
Three types of reset responses are available.
• Power-On Reset
- The ODD performs initialization processes such as initial diagnosis and
default setting. It also starts rotation of the media, if any is mounted.
• SCSI Reset
- The ODD is reset when the RESET- signal is asserted. The ODD
performs initialization of the interface controller, including such
operations as writing the default values to the registers.
- UNIT ATTENTION is generated.
• Bus Device Reset
- The ODD is reset when a bus device reset message is received. The
ODD performs initialization of the interface controller, including such
operations as writing the default values to the registers.
- UNIT ATTENTION is generated.
4.2.2 Defective sector management
The following standards for each type of media are used to manage sector
mapping:
- ISO/IEC 10090 for 128-MB media
- ISO/IEC 13963 for 230-MB media
- ISO/IEC 15041 for 540/640-MB media
- Cherry Book for 1.3-GB media
- Cherry Book 2 for 2.3-GB media
In principle, the initiator need not manage defective sectors.
4.2.3 Automatic alternate sector assignment function
If a verify error is detected in the ID or data section when the WRITE (6/10),
WRITE AND VERIFY, or ERASE command is executed, the ODD automatically
assigns an alternate sector. Alternate sector information is entered in the
secondary defect list (SDL) on the media.
No error is reported if automatic alternate sector assignment ends successfully.