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MODE SELECT (6) / (10) Command (15h / 55h) SDLT 600 SCSI Interface Guide

4-90 January 2005 81-81200-02 REV A01

4.9.9 Port Control Page (19h)

The Port Control Page contains the parameters that affect SCSI target port operation options.

Figure 4-52. Port Control MODE SELECT Page — Data Format

Bit

Byte

7 6 5 4 3 2 1 0

0 PS SPF (0) Page Code (19h)

1 Page Length (06h)

2 Reserved Protocol Identifier (1h)

3 Reserved

4 - 5

(MSB)

Synchronous Transfer Timeout

(LSB)

6 - 7 Reserved

Table 4-54. Port Control MODE SELECT Page — Field Descriptions

Field Name Description

PS Parameters Savable. Not supported. Must be set to 0.

SPF SubPage Format. Always set to 0. Indicates that the drive uses the page_0

page format.

Page Code Identifies the type of MODE SELECT page being transferred. A value of

19h identifies this as the Port Control Page.

Page Length Indicates the number of bytes in the page, excluding bytes 0 and 1. The

length is returned on MODE SENSE and must subsequently be set to the

same value when performing MODE SELECT. If the drive receives an

unexpected page length value, it returns a CHECK CONDITION status,

Sense Key set to ILLEGAL REQUEST.

Protocol

Identifier

A value of 1h indicates that this mode page applies to an SPI device. For

details, see SCSI Primary Commands – 3 (SPC–3).

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Quantum 1200 Series DAT Autochanger Guía de usuario Pagina 132