Toshiba 4006GAH User Manual

360050398 

 

Toshiba Corporation Digital Media Network Company 

 

Page 52 of 157 

© 2005, Copyright TOSHIBA Corporation All Rights Reserved 

 

 

Password information is transferred during the execution of following four commands. 

1) Disable password 

2) Erase Unit 

3) Set Password 

4) Unlock 

 

Data in the register and on the media correspond to each other as follows: 

 

A15 - A8 

A7 - A0 

 

 

 

transfer  1 

  D2 

  D1 

 

 

 

transfer  2 

  D4 

  D3 

 

 

 

        : 

      : 

      : 

 

 

 

        : 

      : 

      : 

 

 

 

transfer 256 

  D512 

  D511 

 

D1

D2 --- D512

E1 --- E4 

transfer 257 

 

  E1 

 

 

 

        : 

 

    E2 

 

 

 

        : 

 

      : 

 

 

 

transfer 260 

 

  E4 

 

 

 

 

DATA REGISTER 

 

DATA FLOW ON THE MEDIA 

 

  - CS0 

 DA2-DA0 : 1   Read ONLY 

 

 

The following descriptions are bit definitions for the operational mode including the error information from the 
last command.    This command is valid only when the ERROR BIT (bit 0) is set. 

ICRC UNC  MC  IDNF  MCR  ABRT TK0NF

AMNF 

 

Bit 7   

Interface CRC error was found during the transfer of Ultra DMA.   

2

 

Bit 6   

UNC (Uncorrectable Data Error) – This bit indicates that an uncorrectable error has been encountered in the 
data field during a read command. 

Bit 5   

MC (Media Changed) -- This bit is reserved for use by removable media devices and indicates that new 
media is available to the operating system. 

Bit 4 

IDNF (ID Not Found) --The requested sector could not be found. 

Bit 3   

MCR (Media Change Requested) is reserved for use by removable media devices and indicates that a 
request for media removal has been detected by the device. 

Bit 2   

ABRT (Aborted Command) -- This bit Indicates that the requested command has been aborted due to the 
reason reported in the drive status register (Write Fault, Not Seek Complete, Drive Not Ready, or an invalid 
command). The status registers and the error registers may be decoded to identify the cause. 

Bit 1   

TK0NF (Track 0 Not Found) -- This bit is set to indicate that the track 000 has not been found during a 
Recalibrate command. 

Bit 0 

AMNF (AM Not Found) -- This bit is set to indicate that the required Data AM pattern on read operation has 
not been found. 

                                                           

2

  ATA-2 Notes: Prior to the development of ATA-2 standard, this bit was defined as BBK (Bad Block Detected) -- This bit was used to 

indicate that the block mark was detected in the target’s ID field. The mark does not exist when shipping from the factory.The Mark 
will be written by FORMAT command. Read or Write commands will not be executed in any data fields marked bad. The drive does 
not support this bit.