Appendix E: Introduction To Ait-3 Mic; Mic Data Structures; Mic Header; System Log - Sony SDX-700C Product Specifications Manual

12. APPENDIX E: Introduction to AIT-3 MIC

The MIC hardware consists of an EEPROM mounted within the AIT-3 data cartridge and
includes a remote sense interface to the drive or other external connection (shown in Figure
E-1). Using a serial interface to the memory chip, the Sony SDX-700C drive is able to retrieve
the information directly from the chip, and to provide real-time updates of system and user
generated information.
Figure E-1: AIT-3 Media with Remote type of MIC

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
16 kbits

MIC Header

12.1.1.
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-3 drive SDX-700 series Ver.2.1
Flash Memory
MIC HEADER
Volume Information
System Log
Information
User Partition Note
User Volume Note
Map Information for
Search
User Data Area
Figure E-2: MIC Data Structures
- Manufacturer Information
+ Unique Serial Number in the world
+ MIC physical characteristics
- Memory Management Information
Volume Management
Eject Status, Initialize Count, Raw Format ID, DDS Mode Flag
Unload PBOT Flag, Last Partition Number, Device Area Map
for Accumulative
for partition #0
Previous Group written
Total Group written
for partition #1
Previous Group written
Previous Group read
Total Group written for partition #n
Previous Group written
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