Hitachi 7K100 Hard Drive Specifications - Page 133
Read Buffer E4h
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13.12 Read Buffer (E4h) Table 78: Read Buffer (E4h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count LBA Low LBA Mid LBA High Device 1 - 1 D - - - - Command 1 1 1 0 0 1 0 0 76 CRC UNC 00 Error Register 54 3 2 1 0 0 IDN 0 ABT T0N AMN 00 0 V 0 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count LBA Low LBA Mid LBA High Device Status see below Status Register 7 654 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR 0 V0- - 0 - V The Read Buffer command transfers a sector of data from the sector buffer of the device to the host. The sector is transferred through the Data Register 16 bits at a time. The sector transferred will be from the same part of the buffer written to by the last Write Buffer command. The contents of the sector may be different if any reads or writes have occurred since the Write Buffer command was issued. Travelstar 7K100 Hard Disk Drive Specification 119