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SanDisk Industrial Grade CompactFlash 5000 Product Manual
© 2007 SanDisk® Corporation 43 July 2007
4.5.10
Device Control Register
(Address–3F6[376]; Offset Eh)
This register is used to control the CompactFlash Memory Card interrupt
request and to issue an ATA soft reset to the card. The bits are defined as
follows:
D7 D6 D5 D4 D3 D2 D1 D0
X X X X 1 SW Rst -IEn 0
Bit Name Description
D7 X Irrelevant.
D6 X Irrelevant.
D5 X Irrelevant.
D4 X Irrelevant.
D3 1 Bit ignored by the card.
D2 SW Rst Set to 1 in order to force the card to perform an AT Disk controller
Soft Reset operation. This does not change the PCMCIA Card
Configuration registers as a hardware reset does. The card
remains in Reset until this bit is reset to “0”.
D1 -IEn Interrupt Enable bit enables interrupts when the bit is 0. When the
bit is 1, interrupts from the card are disabled. This bit also controls
the Int bit in the Configuration and Status Register. This bit is set
to 0 at power on and reset.
D0 ERR Bit ignored by the card.
4.5.11
Card (Drive) Address Register (Address–3F7[377];
Offset Fh)
This register is provided for compatibility with the AT disk drive interface. This
register should not be mapped into the host's I/O space because of potential
conflicts on Bit 7. The bits are defined as follows:
D7 D6 D5 D4 D3 D2 D1 D0
X -WTG -HS3 -HS2 -HS1 -HS0 -nDS1 -nDS0
Bit Name Description
D7 X This bit is unknown. Implementation Note: Conflicts may occur on the host data
bus when this bit is provided by a Floppy Disk Controller operating at the same
addresses as the CompactFlash Memory Card. Following are some possible
solutions to this problem for the PCMCIA implementation:
1)
Locate the CompactFlash Memory Card at a non-conflicting address, i.e.,
Secondary address (377) or in an independently decoded Address Space
when a Floppy Disk Controller is located at primary addresses.
2)
Do not install a Floppy and a CompactFlash Memory Card in the system at
the same time
3)
Implement a socket adapter that can be programmed to (conditionally) tri-
state D7 of I/0 address 3F7/377 when a CompactFlash Memory Card is
installed and conversely to tri-state D6-D0 of I/O address 3F7/377 when a
floppy controller is installed
4)
Do not use the card's Drive Address Register. This can be accomplished by
either programming the host adapter to enable only I/O addresses 1F0-1F7,
- SanDisk Industrial Grade 1
- CompactFlash 5000 1
- Table of Contents 2
- List of Tables 5
- Introduction 8
- Features 9
- CompactFlash Standard 10
- PCMCIA Standard 10
- Related Documentation 10
- Functional Description 10
- Technology Independence 11
- Defect and Error Management 11
- Bad Block Management 12
- Automatic Sleep Mode 12
- Power Supply Requirements 12
- Wear Leveling 12
- Product Specifications 14
- System Power Requirements 15
- System Performance 15
- System Reliability 16
- Physical Specifications 16
- Regulatory Compliance 17
- Traceability 17
- Interface Description 18
- Electrical Description 20
- Table 10: Signal Description 21
- Electrical Specification 24
- Output Drive Characteristics 25
- Power Up/Down Timing 26
- Common Memory Read Timing 27
- Table 16 (continued) 28
- Memory Timing Diagrams 29
- I/O Read Timing Diagram 30
- True IDE Mode 32
- Card Configuration 35
- Attribute Memory Function 36
- Attribute Memory function 37
- Attribute Memory) 38
- 202h in Attribute Memory) 39
- Memory) 40
- I/O Transfer Function 41
- Configurations 43
- Memory Mapped Addressing 45
- True IDE Mode Addressing 46
- ATA Registers 46
- Read Only) 47
- Device Control Register 50
- Offset Fh) 50
- ATA Command Description 52
- Check Power Mode–98H, E5H 53
- Erase Sector(s)–C0H 54
- Format Track–50H 55
- Identify Device–ECH 55
- Idle–97H, E3H 63
- Idle Immediate–95H, E1H 63
- Read Buffer–E4H 64
- Read DMA Command–C8H, C9H 64
- Read Multiple–C4H 65
- Read Long Sector–22H, 23H 66
- Read Sector(s)–20H, 21H 66
- Recalibrate–1XH 67
- Request Sense–03H 67
- Seek–7XH 68
- Set Features–EFH 69
- Set Multiple Mode–C6H 70
- Set Sleep Mode–99H, E6H 70
- Standby–96H, E2H 71
- Standby Immediate–94H, E0H 71
- Translate Sector–87H 72
- Wear Level–F5H 72
- Write Buffer–E8H 73
- Write DMA Command–CAH, CBH 73
- Write Long Sector–32H, 33H 73
- Write Multiple Command–C5H 74
- Write Sector(s)–30H, 31H 75
- Write Verify Sector(s)–3CH 76
- Error Posting 77
- CIS Description 78
- I. Warranty Statement 95
- II. General Provisions 95
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