Seagate ST9402112A Momentus 4200.2 PATA Product Manual - Page 29
Identify Device command
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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 Table 7 on page 20. 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-6 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 Description 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 Retired Number of logical sectors per logical track: 63 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 are valid Number of current logical cylinders Number of current logical heads Number of current logical sectors per logical track Value 0C5AH 16,383 0000H 16 0000H 0000H 003FH 0000H ASCII 0000H 0400H 0000H x.xx ST9100822A ST9808210A ST960821A ST950212A ST9402113A ST930219A 8010H 0000H 2F00H 0000H 0200H 0200H 0007H xxxxH xxxxH xxxxH Momentus 4200.2 Product Manual, Rev. D 23