M2488 PRODUCT GUIDE

MEDIA CHANGER COMMANDS

6-2.3.2 MODE SENSE Data

The MODE SENSE data contains a four-byte header, followed by zero or more variable length pages.

Table 6-11. MODE SENSE Data Header

 

 

 

 

 

 

BITS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BYTES

7

6

5

 

4

 

3

 

2

1

0

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

Mode Sense Data Length

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

Block Descriptor Length = 00h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 6-12. MODE SENSE Data Header Field Description

BYTE

BIT

VALUE

DESCRIPTION

 

 

 

 

0

0-7

 

The Mode Sense Data Length specifies the length in bytes of the following MODE

 

 

 

SENSE data bytes after the data length field that are available to be transferred dur-

 

 

 

ing the DATA IN phase. The sense data length does not include itself.

 

 

 

 

3

0-7

00h

A block descriptor length of zero indicates no block descriptors are included in the

 

 

 

parameter list.

 

 

 

 

Page Descriptor

The page formats are defined as shown in Table 6-13 and described in Table 6-4.

Table 6-13. Page Descriptors

 

 

 

 

 

BITS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BYTES

7

6

5

4

 

3

 

2

1

0

 

 

 

 

 

 

 

 

 

 

 

0

PS

Reserved

 

 

 

Page Code

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

Additional Page Length

 

 

 

 

 

 

 

 

 

2-N

 

 

Page Defined or Vendor Unique Parameter Bytes

 

 

 

 

 

 

 

 

 

 

 

 

 

March 1997

CG00000-011503 REV. A

6-13

Page 273
Image 273
Fujitsu M2488 manual Mode Sense Data Header Field Description, Page Descriptors