Silicon-image SiliconDrive SSDS00-3650H-R Manuel d'utilisateur télécharger pdf (Page 34)

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PAGE 22 JUNE 17, 2008 DOCUMENT: 3650H-02DSR

SSD-HXXX(I)-3650 DATA SHEET ATA REGISTERS

STATUS REGISTER

The Status register provides the device’s current status to the host. The status

read by the host, the IREQ# bit is cleared.

Table 24: Status Register

Operation

Read/Write BSY DRDY DWF DSC DRQ CORR IDX ERR

Default Value 0 0 0 0 0 0 0 0

Bit(s) Description

7 Busy (BSY). Set when the drive is busy and unable to process any

new ATA commands.

6 Data Ready (DRDY). Set when the device is ready to accept ATA

commands from the host.

5 Drive Write Fault (DWF). Always set to 0.

4 Drive Seek Complete (DSC). Set when the drive heads have been

positioned over a specific track.

3 Data Request (DRQ). Set when a device is ready to transfer a word

or byte of data to or from the host and the device.

2 Corrected Data (CORR). Always set to 0.

1 Index (IDX). Always set to 0.

0 Error (ERR). Set when an error occurs during the previous ATA

command.

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 77 78

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Silicon-image SiliconDrive SSDS00-3650H-R Manuel d'utilisateur Page 34