Product manual

SanDisk CompactFlash Card OEM Product Manual ATA Command Description

Bits 0-13 of word 87 are reserved. Bit 14 of word 87 will be set to one and bit 15 of word 87

will 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 upon by host implementers.

Table 5-11 Word 85 Description

Bit Setting Indication

0 0 SMART feature set not enabled

1 1 Security Mode feature set enabled via the Security Set Password command

2 0 Removable Media feature set not supported

3 1 Power Management feature set supported

4 0 Packet Command feature set not enabled

5 1 Write cache enabled

6 1 Look-ahead enabled

7 0 Release Interrupt not enabled

8 0 Service Interrupt not enabled

9 0 Device Reset command not supported

10 0 Host Protected Area feature set not supported

11 --- Obsolete

12 1 Write Buffer command supported by CF Card

13 1 Read Buffer command supported by CF Card

14 1 NOP command supported by CF Card

15 --- Obsolete

Table 5-12 Word 86 Description

Bit Setting Indication

0 0 Download Microcode command not supported by CF Card

1 0 Read DMA Queued and Write DMA Queued commands not supported by CF

Card

2 1 CFA feature set supported by CF Card

3 1 Advanced Power Management feature set by Set Features command

4 0 Removable Media Status feature set not supported by CF Card

Word 163: CF Advanced True IDE Timing Mode Capabilities and Settings. This word

describes the capabilities and current settings for CFA defined advanced timing modes using

the True IDE interface.

There are four separate fields defined that describe support and selection of Advanced PIO

timing modes and Advanced Multiword DMA timing modes. The older modes are reported in

Word 63: Multiword DMA Transfer and and Word 64: Advanced PIO Transfer Modes

Supported.