Seagate ST1.3 ST1.3 Series Product Manual - Page 34

4.1.2 Identify Device command The Identify Device command (command code ECH) transfers information about the drive to the host following power up. The data is organized as a single 512-byte block of data, whose contents are shown in the table on page 28. All reserved bits or words should be set to zero. Parameters listed with an "x" are drive-specific or vary with the state of the drive. See Section 2.0 on page 3 for default parameter settings. The following commands contain drive-specific features that may not be included in the Draft ATA-7 Standard. Word 0 1 2 3 4-5 6 7-9 10-19 20 21 22 23-26 27-46 47 48 49 50 51 52 53 54 55 56 57-58 ATA specification Configuration information: • Bit 15: 0 = ATA; 1 = ATAPI • Bit 7: removable media • Bit 6: removable controller • Bit 0: reserved Number of logical cylinders ATA-reserved Number of logical heads Retired Number of logical sectors per logical track Retired Serial number: (20 ASCII characters, 0000H = none) Retired Retired Obsolete Firmware revision (8 ASCII character string, padded with blanks to end of string) Drive model number: (40 ASCII characters, padded with blanks to end of string) (Bits 7-0) Maximum sectors per interrupt on Read multiple and Write multiple (16) Reserved Standard Standby timer, IORDY supported and may be disabled ATA-reserved PIO data-transfer cycle timing mode Retired Words 54-58, 64-70 and 88 valid Number of current logical cylinders Number of current logical heads Number of current logical sectors per logical track Current capacity in sectors Value 848AH 16,383 0000H 16 0000H 003FH 0000H ASCII 0003H 0100H 0004H x.xx ST612712DEG, ST612712DE, ST610712DEG, ST610712DE, ST680712DEG, ST680712DE, ST660712DEG, ST660712DE 8010H 0000H 0B00H 0000H 0200H 0200H 0007H xxxxH xxxxH xxxxH xxxxH 28 ST1.3 Series Product Manual, Rev. D