Reference Guide

Chapter 4 SCSI Commands

MODE SELECT (6) / (10) Command (15h / 55h)

DLT-S4 Interface Reference Guide 104

Mode Parameter Block

Descriptor

Figure 56 and table 65 illustrate and describe the fields that make up the

MODE SELECT command’s Mode Parameter Block Descriptor.

Figure 56 MODE SELECT

Mode Parameter Block

Descriptor — Data Format

Table 65 MODE SELECT

Mode Parameter Block

Descriptor — Field Descriptions

Bit

Byte

7 6 5 4 3 2 1 0

0 Density Code

1 — 3

(MSB)

Number of Blocks

(LSB)

4 Reserved

5 — 7

(MSB)

Block Length

(LSB)

Field Description

Density Code This field must contain one of the Density Code values listed below:

Density

Code Description

00h Use default density

49h 190,000 bpi, 56 logical tracks, serial cartridge tape

160 GB / 320 GB (Super DLTtape I)

4Ah 233,000 bpi, 40 logical tracks, serial cartridge tape,

300 GB / 600 GB (Super DLTtape II)

4Bh 256,000 bpi, 80 logical tracks, serial cartridge tape,

800 GB / 1600 GB (DLTtape S4)