User's Manual

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Transcend Information Inc.
V1.1
67
3-7 Reserved
Bits 15-12 are reserved.
 Word 164: CF Advanced PCMCIA I/O and Memory Timing Modes Capabilities and Settings
This word describes the capabilities and current settings for CFA defined advanced timing modes using
the Memory and PCMCIA I/O interface.
Notice! The use of PCMCIA I/O or Memory modes that are 100ns or faster impose significant
restrictions on the implementation of the host:
Additional Requirements for CF Advanced Timing Modes.
Bits 2-0: Maximum Advanced PCMCIA I/O Mode Support Indicates the maximum I/O timing mode
supported by the card.
Value Maximum PCMCIA IO timing mode Supported
0 255ns Cycle PCMCIA I/O Mode
1 120ns Cycle PCMCIA I/O Mode
2 100ns Cycle PCMCIA I/O Mode
3 80ns 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.
Bits 15-6: Reserved.
Value Maximum Memory timing mode Supported
0 250ns Cycle Memory Mode
1 120ns Cycle Memory Mode
2 100ns Cycle Memory Mode
3 80ns Cycle Memory Mode
4-7 Reserved
 Idle - 97h or E3h
This command causes the CompactFlash Storage Card to set BSY, enter the Idle 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 that this time base (5 msec) is different from the ATA specification.