Hitachi HTS541680J9AT00 Specifications - Page 97

Travelstar 5K160 (PATA) Hard Disk Drive Specification 2 1 = SMART error log supported 1 1 = SMART self-test supported 0 1 = SMART feature set supported 8-254 Reserved 255 Integrity word 15-8 Checksum 7-0 Signature (A5h) Figure 44 Device Configuration Overlay Data structure Note. Bits 7:0 of this word contain the value A5h. Bits 15:8 of this word contain the data structure checksum. The data structure checksum is the two's complement of the sum of all byte in words 0 through 254 and the byte consisting of bits 7:0 of word 255. Each byte is added with unsigned arithmetic, and overflow is ignored. The sum of all bytes is zero when the checksum is correct. LBA High invalid word location LBA Mid invalid bit location (bits (7:0)) LBA Low invalid bit location (bits (15:8)) Sector count error reason code & description 01h DCO feature is frozen 02h Device is now Security Locked mode 03h Device's feature is already modified with DCO 04h User attempt to disable any feature enabled 05h Device is now SET MAX Locked or Frozen mode 06h Protected area is now established 07h DCO is not supported 08h Subcommand code is invalid FFh other reason Figure 45 DCO error information definition 97/188