SanDisk SDSDH-512 - Ultra II Flash Memory Card Manual descarregar pdf (Página 59)

SanDisk CompactFlash Card OEM Product Manual ATA Command Description

5.1.5 Identify Device–ECH

The Identify Drive command enables the host to receive parameter information from a

CompactFlash Memory Card. This command has the same protocol as the Read Sector(s)

command. The parameter words in the buffer have the arrangement and meanings defined in

Table 5-8. All reserved bits or words are “0”.

Table 5-7 Identify Device

Bit 7 6 5 4 3 2 1 0

Command (7) ECH

C/D/H (6) X X X Drive X

Cyl High (5) X

Cyl Low (4) X

Sec Num (3) X

Sec Cnt (2) X

Feature (1) X

Table 5-8 is the definition for each field in the Identify Device Information.

Table 5-8 Identify Device Information

Word

Address Default Value Total Bytes Data Field Type Information

0 848Ah 2 General configuration bit-significant

information

1 XXXXh 2 Default number of cylinders

2 0000h 2 Reserved

3 XXXXh 2 Default number of heads

4 0000h 2 Number of unformatted bytes per track

5 0000h 2 Number of unformatted bytes per sector

6 XXXXh 2 Default number of sectors per track

7-8 XXXXh 4 Number of sectors per card (Word 7 = MSW,

Word 8 = LSW)

9 0000h 2 Reserved

10-19 aaaa 20 Serial number in ASCII (right justified)

20 0000h 2 Buffer type (dual ported)

21 0000h 2 Buffer size in 512 byte increments

22 0004h 2 Number of ECC bytes passed on Read/Write

Long Commands

23-26 aaa 8 Firmware revision in ASCII (Rev M.ms) set by

code Big Endian Byte Order in Word

27-46 aaaa 40 Model number in ASCII (left justified) Big

Endian Byte Order in Word

47 000Xh 2 Maximum No. of Sectors on Read/Write Multiple

command

48 0000h 2 Double-word not supported

0X00h

2 Capabilities: DMA Supported (bit 8), LBA

supported (bit 9)

50 0000h 2 Reserved

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 107 108

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