Hitachi hard disk 0J11285 500 GB 2.5 " 8 MB 0J11285 数据表

Z5K500 OEM Specifications 

64 

12.12  48-bit Address Feature Set   

The 48-bit Address feature set allows devices with capacities up to 281,474,976,710,655 sectors. This 
allows device capacity up to 144,115,188,075,855,360 bytes. In addition, the number of sectors that may 
be transferred by a single command are increased by increasing the allowable sector count to 16 bits.   

Commands unique to the 48-bit Address feature set are:   

  Flush Cache Ext   
  Read DMA Ext   
  Read Multiple Ext   
  Read Native Max Address Ext   
  Read Sector(s) Ext   
  Read Verify Sector(s) Ext   
  Set Max Address Ext   
 Write 

DMA 

Ext  

  Write Multiple Ext   
  Write Sector(s) Ext   

The 48-bit Address feature set operates in LBA addressing only. Devices also implement commands 
using 28-bit addressing, and 28-bit and 48-bit commands may be intermixed.   

Support of the 48-bit Address feature set is indicated in the Identify Device response bit 10 word 83. In 
addition, the maximum user LBA address accessible by 48-bit addressable commands is contained in 
Identify Device response words 100 through 103.   

When the 48-bit Address feature set is implemented, the native maximum address is the value returned 
by a Read Native Max Address Ext command. If the native maximum address is equal to or less than 
268,435,455, a Read Native Max Address shall return the native maximum address. If the native 
maximum address is greater than 268,435,455, a Read Native Max Address shall return a value of 
268,435,455.