Sony SDX-1100V/R manual Appendix E Medium Auxiliary Memory Attribute, Read Write Attribute

12.APPENDIX E: Medium Auxiliary Memory Attribute

12.APPENDIX E: Medium Auxiliary Memory Attribute

12.1.INTRODUCTION

This section will outline the design specifications for the implementation of selected Medium Auxiliary Memory (MAM) attributes.

12.2.OVERVIEW

An increasing number of media types are incorporating small memory components into their products. The creation and acceptance of the “Proposed Addition of Read and Write Attribute Commands to SPC-2” (AM document) provides a uniform method to access the data stored on the Medium Auxiliary Memory. This section will provide details on using MAM with this product.

12.3.MEDIUM AUXILIALY MEMORY ATTRIBUTE TYPES AND STATES

A MAM attribute is represented in a format described in the next section and is composed of:

1.An attribute identifier,

2.An attribute format code,

3.A bit indicating whether the identified attribute is read only,

4.An attribute length specifying the number of bytes in the identified attribute value, and

5.The value of the identified attribute.

There are three types of attribute (Table 12-1).

Table 12-1: Types of MAM Attributes

Attribute Type	Attribute Source	Example	Readable with	Writable with
			READ	WRITE
			ATTRIBUTE	ATTRIBUTE
Medium	Permanently stored in the	Media	Yes	No
	medium auxiliary memory	Serial
	during manufacture.	Number
Device	Maintained by the drive	Load	Yes	No
		Count
Host	Maintained by the	Backup	Yes	Yes
	application client.	date

Depending on that attribute type, attributes have the states shown in Table 12-1

SONY AIT-5 drive SDX-1100V series Ver.1.0 12-1