User manual FUJITSU MPB3052AT

[. . . ] MPB3021AT MPB3032AT MPB3043AT MPB3052AT MPB3064AT DISK DRIVES PRODUCT MANUAL C141-E045-02EN REVISION RECORD Edition 01 02 Date published August. , 1997 March, 1998 All pages revised. Revised contents Specification No. : C141-E045-**EN The contents of this manual is subject to change without prior notice. Copyright © 1998 FUJITSU LIMITED C141-E045-02EN i PREFACE This manual describes the MPB3021AT/MPB3032AT/MPB3043AT/MPB3052AT/MPB3064AT, a 3. 5-inch hard disk drive with a BUILT-IN controller that is compatible with the ATA interface. This manual explains, in detail, how to incorporate the hard disk drives into user systems. [. . . ] Upon the completion of the command execution, the command block registers contain the cylinder, head, and sector number of the last sector verified. If an error occurs, the verify operation is terminated at the sector where the error occurred. The command block registers contain the cylinder, the head, and the sector addresses (in the CHS mode) or the logical block address (in the LBA mode) of the sector where the error occurred. The Sector Count register indicates the number of sectors that have not been verified. If a correctable error is found, the device sets the CORR bit of the Status register to 1 after the command is completed (before the device generates an interrupt). At command issuance (I/O registers setting contents) 1F7H(CM) 1F6H(DH) 1F5H(CH) 1F4H(CL) 1F3H(SN) 1F2H(SC) 1F1H(FR) R = 0 with Retry R = 1 without Retry 0 × 1 L 0 × 0 DV 0 0 0 R Start head No. / LBA [LSB] Transfer sector count xx C141-E045-02EN 5 - 21 At command completion (I/O registers contents to be read) 1F7H(ST) 1F6H(DH) 1F5H(CH) 1F4H(CL) 1F3H(SN) 1F2H(SC) 1F1H(ER) × L × Status information DV End head No. / LBA [LSB] 00 (*1) Error information *1 If the command is terminated due to an error, the remaining number of sectors of which data was not transferred is set in this register. (5) WRITE SECTOR(S) (X'30' or X'31') This command writes data of sectors from the address specified in the Device/Head, Cylinder High, Cylinder Low, and Sector Number registers to the address specified in the Sector Count register. Data transfer begins at the sector specified in the Sector Number register. For the DRQ, INTRQ, and BSY protocols related to data transfer, see Subsection 4. 4. 2. If the head is not on the track specified by the host, the device performs a implied seek. After the head reaches to the specified track, the device writes the target sector. The data stored in the buffer, and CRC code and ECC bytes are written to the data field of the corresponding sector(s). Upon the completion of the command execution, the command block registers contain the cylinder, head, and sector addresses of the last sector written. If an error occurs during multiple sector write operation, the write operation is terminated at the sector where the error occurred. Command block registers contain the cylinder, the head, the sector addresses (in the CHS mode) or the logical block address (in the LBA mode) of the sector where the error occurred. Then the host can read the command block registers to determine what error has occurred and on which sector the error has occurred. At command issuance (I/O registers setting contents) 1F7H(CM) 1F6H(DH) 1F5H(CH) 1F4H(CL) 1F3H(SN) 1F2H(SC) 1F1H(FR) R = 0 with Retry R = 1 without Retry 0 × 0 L 1 × 1 DV 0 0 0 R Start head No. / LBA [LSB] Transfer sector count xx 5 - 22 C141-E045-02EN At command completion (I/O registers contents to be read) 1F7H(ST) 1F6H(DH) 1F5H(CH) 1F4H(CL) 1F3H(SN) 1F2H(SC) 1F1H(ER) × L × Status information DV End head No. / LBA [LSB] 00 (*1) Error information *1 If the command is terminated due to an error, the remaining number of sectors of which data was not transferred is set in this register. (6) WRITE MULTIPLE (X'C5') This command is similar to the WRITE SECTOR(S) command. The device does not generate interrupts (assertion of the INTRQ) signal) on each sector but on the transfer of a block which contains the number of sectors for which the number is defined by the SET MULTIPLE MODE command. The implementation of the WRITE MULTIPLE command is identical to that of the WRITE SECTOR(S) command except that the number of sectors is specified by the SET MULTIPLE MODE command are transferred without intervening interrupts. In the WRITE MULTIPLE command operation, the DRQ bit of the Status register is required to set only at the start of the data block, not on each sector. The number of sectors (block count) to be transferred without interruption is specified by the SET MULTIPLE MODE command. [. . . ] When the power of the drive is turned on after the power is turned off once, the status of the write cache function returns to the default state. The default state is "write cache enable", and can be disable by the SET FEATURES command. · · · WRITE SECTOR(S) WRITE MULTIPLE WRITE DMA IMPORTANT When the write cache function is enabled, the transferred data from the host by the WRITE SECTOR(S) is not completely written on the disk medium at the time that the interrupt of command complete is generated. When the unrecoverable error occurs during the write operation, the command execution is stopped. [. . . ]