CompactFlash Memory Card Product Manual

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