User guide
203 Series Industrial Grade 2.5" FlashDrive Product Manual v2.0Cactus Technologies
®
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5.1.5.18. Word 52: Single Word DMA Data Transfer Cycle Timing
Mode
This eld states this product doesn’t support Single Word DMA data transfer mode.
5.1.5.19. Word 53: Translation Parameters Valid
Bit 0 of this eld is set, indicating that words 54 to 58 are valid and reect the current number of
cylinders, heads and sectors. Bit 1 is also set, indicating values in words 64 through 70 are valid.
5.1.5.20. Words 54-56: Current Number of Cylinders, Heads,
Sectors/Tracks
These elds contain the current number of user addressable Cylinders, Heads, and Sectors/Track in
the current translation mode.
5.1.5.21. Words 57-58: Current Capacity
This eld contains the product of the current cylinders times heads times sectors.
5.1.5.22. Word 59: Multiple Sector Setting
This eld contains a validity ag in the odd byte and the current number of sectors that can be
transferred per interrupt for R/W Multiple in the even byte. The odd byte is always 01H, which
indicates that the even byte is always valid.
The even byte value depends on the value set by the Set Multiple command. The even byte of this
word by default contains a 00H, which indicates that R/W Multiple commands are not valid. The only
other value returned by the drive in the even byte is a 01H value, which indicates that 1 sector per
interrupt, can be transferred in R/W Multiple mode.
5.1.5.23. Words 60-61: Total Sectors Addressable in LBA Mode
This eld contains the number of sectors addressable for the drive in LBA mode only.
5.1.5.24. Word 64: Advanced PIO Transfer Modes Supported
Bits 0 and 1 of this eld are set to indicate support for PIO transfer modes 3 and 4, respectively.