Hitachi HTS541680J9SA00 Specifications - Page 94

Travelstar 5K160 (SATA) Hard Disk Drive Specification 14.12 Read Buffer (E4h) Command Block Output Registers Register 76543210 Data -------- Feature -------- Sector Count -------- LBA Low -------- LBA Mid -------- LBA High -------- Device -------- Command 11100100 Command Block Input Registers Register 76543210 Data -------- Error ...See Below... Sector Count -------- LBA Low -------- LBA Mid -------- LBA High -------- Device -------- Status ...See Below... Error Register 7 6 5 4 3 2 1 0 CRC UNC 0 IDN 0 ABT T0N AM N 000 0 0V0 0 Figure 45 Read Buffer Command (E4h) Status Register 7 6543 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0V0 - - 0 0V The Read Buffer command transfers a sector of data from the sector buffer of 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. 94/167