ATA COMMAND BLOCK AND SET DESCRIPTION

 

SSD-PXXX(I)-3521 DATA SHEET

 

 

Table 52: Identify Drive — Drive Attribute Data (Continued)

 

 

 

 

 

 

 

 

 

Word

Data Default

Bytes

Data Description

 

 

Address

 

 

20

0002h

2

Buffer type

 

 

 

 

 

0000h: Not specified

 

 

 

 

 

• 0001h: A single-ported, single-sector

 

 

 

 

 

 

buffer

 

 

 

 

 

• 0002h: A dual-ported multisector buffer

 

 

 

 

 

• 0003h: A dual-ported multisector buffer

 

 

 

 

 

 

with a read caching

 

 

 

 

 

 

 

21

0002h

2

Buffer size in 512-byte increments

 

 

 

 

 

 

 

22

0004h

2

Number of ECC bytes passed on read/

 

 

 

 

 

write long commands

 

 

 

 

 

 

 

23-26

XXXXh

8

Firmware revision (eight ASCII characters)

 

 

27-46

XXXXh

40

Model number (40 ASCII characters)

 

 

 

 

 

 

 

47

0001h

2

7-0: Maximum number of sectors that can

 

 

 

 

 

be transferred with a Read/Write Multiple

 

 

 

 

 

command per interrupt

 

 

 

 

 

 

 

48

0000h

2

Double word (32 bit) not supported

 

 

 

 

 

 

 

 

49

0002h

2

11: IORDY supported

 

 

 

 

 

9: LBA supported

 

 

 

 

 

8: DMA supported

 

 

 

 

 

 

 

50

0000h

2

Reserved

 

 

 

 

 

 

 

51

0100h

2

15-8: PIO data transfer cycle timing

 

 

 

 

 

 

 

52

0000h

2

15-8: DMA data transfer cycle timing

 

 

 

 

 

 

 

53

0000h

2

• 1: Words 64-70 are valid

 

 

 

 

 

• 0: Words 54-58 are valid

 

 

 

 

 

 

 

54

XXXXh

2

Current number of cylinders

 

 

 

 

 

 

 

55

XXXXh

2

Current number of heads

 

 

 

 

 

 

 

56

XXXXh

2

Current sectors per track

 

 

 

 

 

 

 

57-58

XXXXh

4

Current capacity in sectors

 

 

 

 

 

 

 

59

010Xh

2

7-0: Current sectors can be transferred

 

 

 

 

 

with a Read/Write Multiple command per

 

 

 

 

 

interrupt

 

 

 

 

 

 

 

60-61

XXXXh

4

Total number of sectors addressable in

 

 

 

 

 

LBA mode

 

 

 

 

 

 

 

62

0000h

2

Single-word DMA modes supported

 

 

 

 

 

 

 

 

SILICONSYSTEMS PROPRIETARY

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All unauthorized use and/or reproduction is prohibited.

3521P-02DSR

PAGE 66

FEBRUARY 2, 2009

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Silicon Image SSD-P08G(I)-3521 manual Identify Drive Drive Attribute Data