User Manual

TriFlash Interface Description
3-26 TriFlash with SD Interface Product Manual (Preliminary), Rev. 1.2 © 2002/2003 SANDISK CORPORATION
• The User Area—used for secured and non-secured data storage and can be accessed by the user with
regular read/write commands.
• Security Protected Area—used by copyright protection applications to save security related data and
can be accessed by the host using the secured read/write command after doing authentication as
defined in the SD Security Specification. The security protected area size is defined by SanDisk as
approximately one percent of the total size of the device. Tables 3-31 and 3-32 describe the user and
protected areas for all SanDisk TriFlash devices.
Table 3-31. Parameters for User Area DOS Image
Capacity Total
LBAs
No. of Partition
Sys. Area Sectors
Total Partition
Sectors
User Data
Sectors
User Data
Bytes
128 Mb 28,800 39 28,743 28,704 14,696,448
256 Mb 59,776 45 59,725 59,680 30,556,160
512 Mb 121,856 57 121,817 121,760 62,341,120
1024 Mb 246,016 95 245,919 245,824 125,861,888
Table 3-32. Parameters for Protected Area DOS Image
Capacity Total
LBAs
No. of Partition
Sys. Area Sectors
Total Partition
Sectors
User Data
Sectors
User Data
Bytes
128 Mb 352 35 351 316 161,792
256 Mb 736 37 733 696 356,352
512 Mb 1,376 37 1,373 1,336 684,032
1024 Mb 2,624 35 2,611 2,576 1,318,912