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12. APPENDIX E:
Introduction to AIT-2 contact type MIC
The MIC hardware consists of an EEPROM mounted within the data cartridge and includes a five-pin interface to the
drive or other external connection (shown in Figure E-1). Using a serial interface to the memory chip, the Sony
SDX-450V drive is able to retrieve the information directly from the chip, and to provide real-time updates of system
and user generated information.
12.1. MIC Data Structures
When a MIC cartridge is inserted, the drive reads selected parts of MIC even before the tape is fully loaded and
ready for use. The drive retrieves and processes the complete history and positioning information related to the
media. As illustrated in Figure E-2, the MIC information consists of the following major sections:
EEPROM
64 kbits
12.1.1. MIC Header
The MIC Header contains the manufacturer information and memory management information.
12.1.2. System Log
The System Log provides the summary information related to the format, to the history of use for each partition, and
an "accumulated log page" summarizing partition information.
SONY AIT-1 Turbo drive SDX-450V series Ver.1.0
Flash Memory
Figure E-1: AIT-2 Media with contact type of MIC
- Manufacturer Information
- Memory Management Information
MIC HEADER
Eject Status, Initialize Count, Raw Format ID, DDS Mode Flag
Unload PBOT Flag, Last Partition Number, Device Area Map
Volume Information
System Log
Information
User Partition Note
User Volume Note
Map Information for
Search
User Data Area
Figure E-2: MIC Data Structures
+ Unique Serial Number in the world
+ MIC physical characteristics
Volume Management Information
for Accumulative
for partition #0
Previous Group written
Total Group written
for partition #1
Previous Group written
Previous Group read
Total Group written
Previous Group written
for partition #n
Total Group read
Previous Group read
Total Group written
Previous Group written
Total Rewritten frame
Total Group read
Previous Group read
Total Group written
Total 3rd ECC count
Total Rewritten frame
Total Group read
Previous Group read
Load count
Total 3rd ECC count
Total Rewritten frame
Total Group read
Access count
Load count
Total 3rd ECC count
Total Rewritten frame s
Previous rewritten frame
Access count
Load count
Total 3rd ECC count
Previous 3rd ECC count
Previous rewritten frame
Access count
Load count
Last
Previous 3rd ECC count
Previous rewritten frame
Access count
Max. Absolute frame count
Last
Previous 3rd ECC count
Previous rewritten frame
Update Replace count
Max. Absolute frame count
Last Absolute frame count
Previous 3rd ECC count
Update Replace count
Max. Absolute frame count
Max. Absolute frame count
Last Absolute frame count
Update Replace count
Max. Absolute frame count
Update Replace count
12. Appendix E
12-1
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