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SanDisk 20-10-00038, Extreme III 4.1 I/O Primary and Secondary Address Configurations

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CHAPTER 4 ATA Register Set and Protocol

SanDisk CompactFlash Memory cards can be configured as a high performance I/O device

through the following ways:

•Standard PC-AT disk I/O address spaces 1F0h-1F7h, 3F6h-3F7h (primary); 170h-177h,

376h-377h (secondary) with IRQ 14 (or other available IRQ).

•Any system decoded 16-byte I/O block using any available IRQ.

•Memory space.

The communication to or from the card is done using the Task File registers, which provide all

the necessary registers for control and status information. The PCMCIA interface connects

peripherals to the host using four register mapping methods. Table 4-1 is a detailed description

of these methods.

Table 4-1 Standard I/O Configurations

Config Index I/O or Memory Address Drive Description

0 Memory 0-F, 400-7FF 0 Memory Mapped

1 I/O XX0-XXF 0 I/O Mapped 16 Contiguous

Registers

2 I/O 1F0-1F7, 3F6-3F7 0 Primary I/O Mapped Drive 0

2 I/O 1F0-1F7, 3F6-3F7 1 Primary I/O Mapped Drive 1

3 I/O 170-177, 376-377 0 Secondary I/O Mapped Drive 0

3 I/O 170-177, 376-377 1 Secondary I/O Mapped Drive 1

4.1 I/O Primary and Secondary Address Configurations

Table 3-2 contains configurations for primary and secondary I/O decoding.

Table 4-2 Primary and Secondary I/O Decoding

-REG A9-A4 A3 A2 A1 A0 -IORD=0 -IOWR=0

0 1F(17) 0 0 0 0

Even RD Dataa,b Even WR Dataa,b

0 1F(17) 0 0 0 1

Error Registera Featuresa

0 1F(17) 0 0 1 0 Sector Count Sector Count

0 1F(17) 0 0 1 1 Sector No. Sector No.

0 1F(17) 0 1 0 0 Cylinder Low Cylinder Low

0 1F(17) 0 1 0 1 Cylinder High Cylinder High

0 1F(17) 0 1 1 0 Select Card/Head Select Card/Head

0 1F(17) 0 1 1 1 Status Command

0 3F(37) 0 1 1 0 Alt Status Device Control

0 3F(37) 0 1 1 1 Drive Address Reserved

© 2007 SanDisk Corporation 4-1 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