Transcend TS32GCF133 Fiche technique télécharger pdf (Page 11)

133X CompactFlash Card

Transcend Information Inc.

Signal Name

Dir.

Description

-VS1

-VS2

(PC Card Memory Mode)

-VS1

-VS2

(PC Card I/O Mode)

-VS1

-VS2

(True IDE Mode)

Voltage Sense Signals. -VS1 is grounded on the Card and sensed by the Host so

that the CompactFlash Storage Card CIS can be read at 3.3 volts and -VS2 is

reserved by PCMCIA for a secondary voltage and is not connected on the Card.

This signal is the same for all modes.

-WAIT

(PC Card Memory Mode)

-WAIT

(PC Card I/O Mode)

IORDY

(True IDE Mode – Except

Ultra DMA Mode)

-DDMARDY

(True IDE Mode – Ultra DMA

Write Mode)

DSTROBE

(True IDE Mode – Ultra

DMA Read Mode)

42 The -WAIT signal is driven low by the CompactFlash Storage Card to signal the

host to delay completion of a memory or I/O cycle that is in progress.

This signal is the same as the PC Card Memory Mode signal.

In True IDE Mode, except in Ultra DMA modes, this output signal may be used as

IORDY.

In True IDE Mode, when Ultra DMA mode DMA Write is active, this signal is

asserted by the host to indicate that the device is read to receive Ultra DMA

data-in bursts. The device may negate -DDMARDY to pause an Ultra DMA

transfer.

In True IDE Mode, when Ultra DMA mode DMA Write is active, this signal is the

data out strobe generated by the device. Both the rising and falling edge of

DSTROBE cause data to be latched by the host. The device may stop

generating DSTROBE edges to pause an Ultra DMA data-out burst.

-WE

(PC Card Memory Mode)

-WE

(PC Card I/O Mode)

-WE

(True IDE Mode)

36 This is a signal driven by the host and used for strobing memory write data to the

registers of the CompactFlash Storage Card when the card is configured in the

memory interface mode. It is also used for writing the configuration registers.

In PC Card I/O Mode, this signal is used for writing the configuration registers.

In True IDE Mode, this input signal is not used and should be connected to VCC

by the host.

(PC Card Memory Mode)

Write Protect

-IOIS16

(PC Card I/O Mode)

-IOCS16

(True IDE Mode)

Memory Mode – The CompactFlash Storage Card does not have a write protect

switch. This signal is held low after the completion of the reset initialization

sequence.

I/O Operation – When the CompactFlash Storage Card is configured for I/O

Operation Pin 24 is used for the -I/O Selected is 16 Bit Port (-IOIS16) function. A

Low signal indicates that a 16 bit or odd byte only operation can be performed at

the addressed port.

In True IDE Mode this output signal is asserted low when this device is expecting

a word data transfer cycle.

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Transcend TS32GCF133 Fiche technique Page 11

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