Flash Memory Datasheet

T
T
T
S
S
S
1
1
1
G
G
G
~
~
~
3
3
3
2
2
2
G
G
G
C
C
C
F
F
F
1
1
1
3
3
3
3
3
3
133X CompactFlash Card
Transcend Information Inc.
64
Microcode command.
Bit 1 of word 83 shall be set to zero; the CompactFlash Storage Card does not support the Read DMA
Queued and Write DMA Queued commands.
Bit 2 of word 83 shall be set to one; the CompactFlash Storage Card supports the CFA feature set.
If bit 3 of word 83 is set to one, the CompactFlash Storage Card supports the Advanced Power
Management feature set.
Bit 4 of word 83 shall be set to zero; the CompactFlash Storage Card does not support the Removable
Media Status feature set.
 Words 85-87: Features/command sets enabled
Words 85, 86, and 87 shall indicate features/command sets enabled. The value 0000h or FFFFh was
placed in each of these words by CompactFlash Storage Cards prior to ATA-4 and shall be interpreted by
the host as meaning that features/command sets enabled are not indicated. Bits 1 through 15 of word 86
are reserved. Bits 0-13 of word 87 are reserved. Bit 14 of word 87 shall be set to one and bit 15 of word 87
shall be cleared to zero to provide indication that the features/command sets enabled words are valid.
The values in these words should not be depended on by host implementers.
Bit 0 of word 85 shall be set to zero; the SMART feature set is not enabled.
If bit 1 of word 85 is set to one, the Security Mode feature set has been enabled via the Security Set
Password command.
Bit 2 of word 85 shall be set to zero; the Removable Media feature set is not supported.
Bit 3 of word 85 shall be set to one; the Power Management feature set is supported.
Bit 4 of word 85 shall be set to zero; the Packet Command feature set is not enabled.
If bit 5 of word 85 is set to one, write cache is enabled.
If bit 6 of word 85 is set to one, look-ahead is enabled.
Bit 7 of word 85 shall be set to zero; release interrupt is not enabled.
Bit 8 of word 85 shall be set to zero; Service interrupt is not enabled.
Bit 9 of word 85 shall be set to zero; the Device Reset command is not supported.
Bit 10 of word 85 shall be set to zero; the Host Protected Area feature set is not supported.
Bit 11 of word 85 is obsolete.
Bit 12 of word 85 shall be set to one; the CompactFlash Storage Card supports the Write Buffer
command.
Bit 13 of word 85 shall be set to one; the CompactFlash Storage Card supports the Read Buffer
command.
Bit 14 of word 85 shall be set to one; the CompactFlash Storage Card supports the NOP command.
Bit 15 of word 85 is obsolete.
Bit 0 of word 86 shall be set to zero; the CompactFlash Storage Card does not support the Download
Microcode command.
Bit 1 of word 86 shall be set to zero; the CompactFlash Storage Card does not support the Read DMA
Queued and Write DMA Queued commands.
If bit 2 of word 86 shall be set to one, the CompactFlash Storage Card supports the CFA feature set.
If bit 3 of word 86 is set to one, the Advanced Power Management feature set has been enabled via the
Set Features command.
Bit 4 of word 86 shall be set to zero; the CompactFlash Storage Card does not support the Removable
Media Status feature set.
 Word 88: Ultra DMA Modes Supported and Selected
Word 88 identifies the Ultra DMA transfer modes supported by the device and indicates the mode that is
currently selected. Only one DMA mode shall be selected at any given time. If an Ultra DMA mode is
selected, then no Multiword DMA mode shall be selected. If a Multiword DMA mode is selected, then no
Ultra DMA mode shall be selected. Support of this word is mandatory if Ultra DMA is supported.
Bits 15-13: Reserved
Bit 12: 1 = Ultra DMA mode 4 is selected 0 = Ultra DMA mode 4 is not selected