SanDisk 20-10-00038, Extreme III 5.1 ATA Command Set

CHAPTER 5 ATA Command Description

This section defines the software requirements and the format of commands the host sends to

CompactFlash Memory cards. Commands are issued to the card by loading the required

registers in the command block with the supplied parameters, and then writing the command

code to the Command Register. The manner in which a command is accepted varies. There are

three classes (see Table 5-1) of command acceptance, all dependent on the host not issuing

commands unless the card is not busy. (The BUSY bit in the status and alternate status registers

is 0.)

•Upon receipt of a Class 1 command, the card sets the BUSY bit within 400 nsec.

•Upon receipt of a Class 2 command, the card sets the BUSY bit within 400 nsec, sets up the

sector buffer for a write operation, sets DRQ within 700 µsec, and clears the BUSY bit

within 400 nsec of setting DRQ.

•Upon receipt of a Class 3 command, the card sets the BUSY bit within 400 nsec, sets up the

sector buffer for a write operation, sets DRQ within 20 msec (assuming no re-assignments),

and clears the BUSY bit within 400 nsec of setting DRQ.

5.1 ATA Command Set

Table 5-1 summarizes the ATA command set with the paragraphs that follow describing the

individual commands and the task file for each.

Table 5-1 Primary and Secondary I/O Decoding

Class Command Code FR SC SN CY DH LBA

1 Check Power Mode E5h or 98h - - - - D -

1 Execute Drive Diagnostic 90h - - - - D -

1 Erase Sector(s)a C0h -Y Y Y Y Y

2 Format Track 50h - Y - Y Y Y

1 Identify Device ECh - - - - D -

1 Idle E3h or 97h - Y - - D -

1 Idle Immediate E1h or 95h - - - - D -

1 Initialize Drive Parameters 91h - Y - - Y -

1 Read Buffer E4h - - - - D -

1 Read DMA C8 or C9 - Y Y Y Y Y

1 Read Multiple C4h - Y Y Y Y Y

1 Read Long Sector 22h or 23h - - Y Y Y Y

1 Read Sector(s) 20h or 21h - Y Y Y Y Y

1 Read Verify Sector(s) 40h or 41h - Y Y Y Y Y

1 Recalibrate 1Xh - - - - D -

1 Request Senseb 03h - - - - D -

1 Seek 7Xh - - Y Y Y Y

1 Set Features EFh Y - - - D -

© 2007 SanDisk Corporation 5-1 Rev. 12.0, 02/07

Contents

Main SanDisk CompactFlash Memory Card OEM Product Manual Page Page Page Table of Content s Page 1.1 General Description 1.2 Features 1.3 Scope 1.4 CompactFlash Standard 1.5 PCMCIA Standard 1.6 Related Documentation 1.7 Functional Description Page Page Page 2.1 System Environmental Specifications 2.2 System Power Requirements Page 2.3 System Performance 2.4 System Reliability 2.5 Physical Specifications Page Page 3.1 Physical Description True IDE Mode Pin Assigments are contained in Table 3-3. Table 3-3 True IDE Mode Pin Assignments 3.2 Electrical Description Page Page Page Page 3.3 Electrical Specification Table 3-8 Output Drive Characteristics Figure 3-1 Power Up/Power Down Timing for Systems supporting RESET Figure 3-2 Power Up/Power Down Timing for Systems not supporting RESET Table 3-10 Common Memory Read Timing Specification signal. Table 3-11 Common and Attribute Memory Write Timing Specification signal. Table 3-12 Attribute Memory Read Timing Specification 3.3.7 Memory Timing Diagrams Figure 3-3 Common and Attribute Memory Read Timing Diagram Figure 3-4 Common and Attribute Memory Write Timing Diagram 3.3.8 I/O Read (Input) Timing Specification Figure 3-5 I/O Read Timing Diagram Table 3-13 contains the read input timing specifications. Table 3-13 I/O Read (Input) Timing Specification 3.3.9 I/O Write (Output) Timing Specification Figure 3-6 I/O Write Timing Diagram Figure 3-7 Register Transfer to/from Device Table 3-15 Register Transfer to/from Device The PIO data transfer parameters are defined in Table 3-16. signal. Table 3-16 PIO Data Transfer to/from Device 3.4 Card Configuration SanDisk CompactFlash Card OEM Product Manual Interface Description 2007 SanDisk Corporation 3-21 Rev. 12.0, 02/07 NOTE:The location of the card configuration registers should always be Interface Description SanDisk CompactFlash Card OEM Product Manual 02/07, Rev. 12.0 3-22 2007 SanDisk Corporation between consecutive cycle operaitons. Table 3-19 Attribute Memory Function Table 3-20 Card Configurations Card Configuration and Status Register (cont) 3.5 I/O Transfer Function 3.6 True IDE Mode I/O Transfer Function 4.1 I/O Primary and Secondary Address Configurations 4.2 Contiguous I/O Mapped Addressing 4.3 Memory Mapped Addressing 4.4 True IDE Mode Addressing 4.5 ATA Registers Page Page Page Page Card (Drive) Address Register (cont) Page 5.1 ATA Command Set Table 5-1 Primary and Secondary I/O Decoding Page Page Page Table 5-8 Identify Device Information Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 5.2 Error Posting Page Attribute Offset Data 7 6 5 4 3 2 1 0 Content Description CIS 2007 SanDisk Corporation 6-1 Rev. 12.0, 02/07 Function CIS Description SanDisk CompactFlash Card OEM Product Manual 02/07, Rev. 12.0 6-2 2007 SanDisk Corporation SanDisk CompactFlash Card OEM Product Manual CIS Description Attribute Offset Data 7 6 5 4 3 2 1 0 Content Description CIS 2007 SanDisk Corporation 6-3 Rev. 12.0, 02/07 Function CIS Description SanDisk CompactFlash Card OEM Product Manual Attribute Offset Data 7 6 5 4 3 2 1 0 Content Description CIS 02/07, Rev. 12.0 6-4 2007 SanDisk Corporation Function SanDisk CompactFlash Card OEM Product Manual CIS Description Attribute Offset Data 7 6 5 4 3 2 1 0 Content Description CIS 2007 SanDisk Corporation 6-5 Rev. 12.0, 02/07 Function Configuration Index 0 CIS Description SanDisk CompactFlash Card OEM Product Manual Attribute Offset Data 7 6 5 4 3 2 1 0 Content Description CIS 02/07, Rev. 12.0 6-6 2007 SanDisk Corporation Function Interface Type SanDisk CompactFlash Card OEM Product Manual CIS Description 2007 SanDisk Corporation 6-7 Rev. 12.0, 02/07 CIS Description SanDisk CompactFlash Card OEM Product Manual 02/07, Rev. 12.0 6-8 2007 SanDisk Corporation SanDisk CompactFlash Card OEM Product Manual CIS Description 2007 SanDisk Corporation 6-9 Rev. 12.0, 02/07 CIS Description SanDisk CompactFlash Card OEM Product Manual 02/07, Rev. 12.0 6-10 2007 SanDisk Corporation SanDisk CompactFlash Card OEM Product Manual CIS Description 2007 SanDisk Corporation 6-11 Rev. 12.0, 02/07 CIS Description SanDisk CompactFlash Card OEM Product Manual 02/07, Rev. 12.0 6-12 2007 SanDisk Corporation SanDisk CompactFlash Card OEM Product Manual CIS Description 2007 SanDisk Corporation 6-13 Rev. 12.0, 02/07 CIS Description SanDisk CompactFlash Card OEM Product Manual 02/07, Rev. 12.0 6-14 2007 SanDisk Corporation SanDisk CompactFlash Card OEM Product Manual CIS Description 2007 SanDisk Corporation 6-15 Rev. 12.0, 02/07 CIS Description SanDisk CompactFlash Card OEM Product Manual 02/07, Rev. 12.0 6-16 2007 SanDisk Corporation SanDisk CompactFlash Card OEM Product Manual CIS Description 2007 SanDisk Corporation 6-17 Rev. 12.0, 02/07 Page Appendix A Ordering Information A.1 SanDisk CompactFlash Memory Card 2007 SanDisk Corporation A-1 Rev. 12.0, 02/07 To order SanDisk products directly from SanDisk, call (408) 801-1000. Page Page Page C.1 SanDisk Corporation Policy