Functional DescriptionATA Commands

 

Table 8.

SSD Identify Drive Information (Continued)

 

 

 

 

Word

Data

Total

Description

Bytes

 

 

 

 

 

 

 

 

20

XXXXh (a)

2

 

Buffer type (dual ported, multi-sector, with read cache)

21

XXXXh (a)

2

 

Buffer size (in 512 byte increments)

22

XXXXh (a)

2

 

Number of ECC bytes passed on Read/Write Long Sector commands

23-46

XXXXh (a)

48

 

Firmware version and model number in ASCII

47

8001h

2

 

Maximum sector count = 1 on Read/Write Multiple commands

48

0000h

2

 

Double word not supported

49

2F00h

2

 

Capabilities: DMA not supported (bit 8); LBA supported (bit 9)

50

0000h

2

 

Reserved

51

0200h

2

 

PIO data transfer cycle timing mode

52

0200h

2

 

Single word DMA data transfer cycle timing mode (not supported)

53

0007h

2

 

Words 54 - 58 and 64 - 70 are valid

54

XXXXh (a)

2

 

Number of current cylinders

55

XXXXh (a)

2

 

Number of current heads

56

XXXXh (a)

2

 

Number of current sectors per track

57

XXXXh (a)

2

 

LSW of the current capacity in sectors

58

XXXXh (a)

2

 

MSW of the current capacity in sectors

59

0000h

2

 

Current setting for block count = 1 for Read/Write Multiple commands

60-61

XXXXh (a)

4

 

Total number of user addressable sectors in LBA Mode

62

0000h

2

 

Single word DMA data transfer cycle timing mode not supported

63

0000h

2

 

Multi-word DMA modes active; modes 0 - 2 supported

64

0003h

2

 

Advanced PIO modes supported (modes 3 and 4)

65

0078h

2

 

Minimum multi-word DMA transfer cycle time per word (ns)

66

0078h

2

 

Recommended multi-word DMA transfer cycle time per word (ns)

67

00F0h

2

 

Minimum PIO transfer without flow control

68

0078h

2

 

Minimum PIO transfer with IORDY flow control

69-255

0000h

388

 

Reserved

 

 

 

 

 

a.Value varies depending on drive storage capacity.

24

Zeus Ultra DMA Solid State Drives