Hitachi 7K100 Hard Drive Specifications - Page 76
Device Register, Error Register
UPC - 683728198671
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10.6 Device Register Table 42: Device Head/Register 7 6 5 4 3 2 1 0 1 L 1 DRV HS3 HS2 HS1 HS0 This register contains the device and head numbers. Bit Definitions L Binary encoded address mode select. When L = 0, addressing is by CHS mode. When L = 1, addressing is by LBA mode. DRV Device. When DRV = 0, device 0 (Master) is selected. When DRV = 1, device 1 (Slave) is selected. HS3, HS2, HS1, HS0 These contain bits 24-27 of the LBA. At command completion these bits are updated to reflect the current LBA bits 24-27. 10.7 Error Register Table 43: Error Register 7 6 5 4 3 2 1 0 CRC UNC 0 IDNF 0 ABRT TK0N AMN This register contains the status from the last command executed by the device or a diagnostic code. At the completion of any command except Execute Device Diagnostic, the contents of this register are always valid even if ERR = 0 is in the Status Register. Following a power on, a reset, or completion of an Execute Device Diagnostic command, this register contains a diagnostic code. See Table 47: "Diagnostic codes," on page 66 for the definitions. Bit Definitions ICRCE (CRC) Interface CRC Error. CRC = 1 indicates that a CRC error has occurred on the data bus during a Ultra DMA transfer. UNC Uncorrectable Data Error. UNC = 1 indicates that an uncorrectable data error has been encountered IDNF (IDN) ID Not Found. IDN = 1 indicates that the requested sector's ID field could not be found. ABRT (ABT) TK0NF (T0N) Aborted Command. ABT = 1 indicates that the requested command has been aborted due to a device status error or an invalid parameter in an output register. Track 0 Not Found. T0N = 1 indicates that track 0 was not found during a recallibrate command. AMNF (AMN) Address Mark Not Found. AMN = 1indicates that the data address mark has not been found after finding the correct ID field for the requested sector. Travelstar 7K100 Hard Disk Drive Specification 62