SanDisk CompactFlash Card OEM Product Manual ATA Command Description
Word 164: CF Advanced PCMCIA I/O and Memory Timing Mode Capabilities and Set-
tings. This word describes the capabilities and current settings for CFA defined advanced
timing modes using the Memory and PCMCIA I/O interface.
• Bits 2-0: Maximum Advanced PCMCIA I/O Mode Support
Indicates the maximum I/O timing mode supported by the card.
Value Maximum PCMCIA I/O Timing Mode Supported
0 255 ns Cycle PCMCIA I/O Mode
1 120 ns Cycle PCMCIA I/O Mode
2 100 ns Cycle PCMCIA I/O Mode
3 80 ns Cycle PCMCIA I/O Mode
4-7 Reserved
• Bits 5-3: Maximum Memory Timing Mode Supported
Indicates the Maximum Memory timing mode supported by the card.
Value Maximum Memory Timing Mode Supported
0 250 ns Cycle Memory Mode
1 120 ns Cycle Memory Mode
2 100 ns Cycle Memory Mode
3 80 ns Cycle Memory Mode
4-7 Reserved
• Bits 15-6: Reserved
5.1.6 Idle–97H, E3H
This command causes the card to set BSY, enter the Idle (Read) mode, clear BSY and generate
an interrupt. If the sector count is non-zero, it is interpreted as a timer count with each count
being 5 milliseconds and the automatic power down mode is enabled. If the sector count is
zero, the automatic power down mode is disabled.
NOTE: This time base (5 msec) is different from the ATA specification.
Table 5-13 Idle
Bit 7 6 5 4 3 2 1 0
Command (7) E3H or 97H
C/D/H (6) X Drive X
Cyl High (5) X
Cyl Low (4) X
Sec Num (3) X
Sec Cnt (2) Timer Count (5 ms increments)
Feature (1) X
© 2007 SanDisk Corporation 5-13 Rev. 12.0, 02/07
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