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SanDisk Industrial Grade CompactFlash 5000 Product Manual
© 2007 SanDisk® Corporation 42 July 2007
Bit Name Description
D4 DRV DRV is the drive number. When DRV=0, drive (card) 0 is selected When
DRV=1, drive (card) 1 is selected. The CompactFlash Card is set to be Card 0
or 1 using the copy field of the PCMCIA Socket & Copy configuration register.
D3 HS3 When operating in the Cylinder, Head, Sector mode, this is bit 3 of the head
number. It is Bit 27 in the Logical Block Address mode.
D2 HS2 When operating in the Cylinder, Head, Sector mode, this is bit 2 of the head
number. It is Bit 26 in the Logical Block Address mode.
D1 HS1 When operating in the Cylinder, Head, Sector mode, this is bit 1 of the head
number. It is Bit 25 in the Logical Block Address mode.
D0 HS0 When operating in the Cylinder, Head, Sector mode, this is bit 0 of the head
number. It is Bit 24 in the Logical Block Address mode.
4.5.9
Status & Alternate Status Registers (Address–
1F7[177]&3F6[376]; Offsets 7 & Eh)
These registers return the card status when read by the host. Reading the
Status Register clears a pending interrupt, while reading the Auxiliary Status
Register does not. The meaning of the status bits are described below:
D7 D6 D5 D4 D3 D2 D1 D0
BUSY RDY DWF DSC DRQ CORR 0 ERR
Bit Name Description
D7 BUSY Set when the CompactFlash Card has access to the command
buffer and registers and the host is prevented from accessing the
command register and buffer. No other bits in this register are valid
when this bit is set to 1.
D6 RDY RDY indicates whether the device is capable of performing card
operations. This bit is cleared at power-up and remains cleared
until card is ready to accept a command.
D5 DWF If set, indicates a write fault has occurred.
D4 DSC Set when the card is ready.
D3 DRQ Set when the card requires informationto be transferred either to
or from the host through the Data Register.
D2 CORR Set when a correctable data error has been encountered and the
data has been corrected. This condition does not terminate a
multi-sector read operation.
D1 0 Always set to 0.
D0 ERR Set when the previous command ended in some type of error. The
bits in the Error Register contain additional information describing
the error.
- 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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