Fujitsu MHN2150AT Manual/User Guide - Page 130
Fujitsu MHN2150AT - Mobile 15 GB Hard Drive Manual
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Interface (19) READ LONG (X'22' or X'23') This command operates similarly to the READ SECTOR(S) command except that the device transfers the data in the requested sector and the ECC bytes to the host system. The ECC error correction is not performed for this command. This command is used for checking ECC function by combining with the WRITE LONG command. The READ LONG command supports only single sector operation. Number of ECC bytes to be transferred is fixed to 4 bytes and cannot be changed by the SET FEATURES command. At command issuance (I/O registers setting contents) 1F7 (CM) H 1F6H(DH) 1F5H(CH) 1F4H(CL) 1F3H(SN) 1F2 (SC) H 1F1 (FR) H (R: Retry) 0 0 1 0 0 0 1R x L x DV Head No. /LBA [MSB] Cylinder No. [MSB] / LBA Cylinder No. [LSB] / LBA Sector No. / LBA [LSB] 01 xx At command completion (I/O registers contents to be read) 1F7 (ST) H 1F6 (DH) H 1F5H(CH) 1F4H(CL) 1F3 (SN) H 1F2 (SC) H 1F1 (ER) H Status information x L x DV Head No. /LBA [MSB] Cylinder No. [MSB] / LBA Cylinder No. [LSB] / LBA Sector No. / LBA [LSB] 00 (*1) Error information *1 If the command is terminated due to an error, this register indicates 01. 5-54 C141-E120-02EN