Hitachi 7K320 Specifications - Page 134

7K320 (SATA) OEM Specification 14.34 Sense Condition (F0h : vendor specific) Command Block Output Registers Register 76543210 Data -------- Feature 00000001 Sector Count -------- LBA Low -------- LBA Mid -------- LBA High -------- Device -------- Command 11110000 Command Block Input Registers Register 76543210 Data -------- Error ...See Below... Sector Count VVVVVVVV LBA Low N 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 000V0V0 0 Table 105 Sense Condition Command (F0h) Status Register 7 6 5 4 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR VVV - V - 0V The Sense Condition command is used to sense temperature in a device. This command is executable without spinning up even if a device is started with No Spin Up option. If this command is issued at the temperature out of range which is specified for operating condition, the error might be returned with IDN bit 1. Output Parameters To The Device Feature Input Parameters From The Device Sector Count The Feature register must be set to 01h. All other value are rejected with setting ABORT bit in status register. The Sector Count register contains result value. Value Description 00h Temperature is equal to or lower than -20 degC 01h-FEh Temperature is (Value / 2 - 20) deg C FFh Temperature is higher than 107 degC N Not recommendable condition for start up. If over stressed condition is detected, this bit will be set to one. Page 134 of 176