TS2GCF133 datasheet(9/81 Pages) TRANSCEND

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133X CompactFlash Card

Transcend Information Inc.

Signal Name

Dir.

Description

-IOWR

(PC Card Memory Mode)

-IOWR

(PC Card I/O Mode)

-IOWR

(True IDE Mode – Except

Ultra DMA Protocol Active)

STOP

(True IDE Mode – Ultra DMA

Protocol Active)

This signal is not used in this mode.

The I/O Write strobe pulse is used to clock I/O data on the Card Data bus into

the CompactFlash Storage Card controller registers when the CompactFlash

Storage Card is configured to use the I/O interface.

The clocking shall occur on the negative to positive edge of the signal (trailing

edge).

In True IDE Mode, while Ultra DMA mode protocol is not active, this signal has

the same function as in PC Card I/O Mode. When Ultra DMA mode protocol is

supported, this signal must be negated before entering Ultra DMA mode

protocol.

In True IDE Mode, while Ultra DMA mode protocol is active, the assertion of this

signal causes the termination of the Ultra DMA burst.

-OE

(PC Card Memory Mode)

-OE

(PC Card I/O Mode)

-ATA SEL

(True IDE Mode)

This is an Output Enable strobe generated by the host interface. It is used to

read data from the CompactFlash Storage Card in Memory Mode and to read

the CIS and configuration registers.

In PC Card I/O Mode, this signal is used to read the CIS and configuration

registers.

To enable True IDE Mode this input should be grounded by the host.

READY

(PC Card Memory Mode)

-IREQ

(PC Card I/O Mode)

INTRQ

(True IDE Mode)

In Memory Mode, this signal is set high when the CompactFlash Storage Card is

ready to accept a new data transfer operation and is held low when the card is

busy.

At power up and at Reset, the READY signal is held low (busy) until the

CompactFlash Storage Card has completed its power up or reset function. No

access of any type should be made to the CompactFlash Storage Card during

this time.

Note, however, that when a card is powered up and used with RESET

continuously disconnected or asserted, the Reset function of the RESET pin is

disabled. Consequently, the continuous assertion of RESET from the application

of power shall not cause the READY signal to remain continuously in the busy

state.

I/O Operation – After the CompactFlash Storage Card Card has been

configured for I/O operation, this signal is used as -Interrupt Request. This line is

strobed low to generate a pulse mode interrupt or held low for a level mode

interrupt.

In True IDE Mode signal is the active high Interrupt Request to the host.

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