ELECTRICAL SPECIFICATION

 

 

SSD-DXXX(I)-4210 DATA SHEET

 

 

Table 8:

Signal Descriptions (Continued)

 

 

 

 

 

 

Signal Name

Pin(s)

Type

Description

 

 

 

 

 

 

DMARQ#

 

 

This signal is a DMA request that is used

 

(UDMA

 

 

for DMA data transfers between the host

 

protocol

 

 

and device. This signal is asserted by the

 

active)

 

 

device when it is ready to transfer data to or

 

 

 

 

from the host.

 

 

 

 

For Multiword DMA transfers, the direction

 

 

 

 

of data transfer is controlled by -IORD and

 

 

 

 

-IOWR. This signal is used in a handshake

 

 

 

 

manner with -DMACK (i.e., the device waits

 

 

 

 

until the host asserts (-)DMACK before

 

 

 

 

negating (-)DMARQ, and reasserts

 

 

 

 

(-)DMARQ if there is more data to transfer).

 

 

 

 

In PCMCIA I/O mode, the -DMARQ is

 

 

 

 

ignored by the host while the host is

 

 

 

 

performing an I/O Read cycle to the device.

 

 

 

 

The host does not initiate an I/O Read cycle

 

 

 

 

while -DMARQ is asserted by the device.

 

 

 

 

In True IDE mode, DMARQ is not driven

 

 

 

 

when the device is not selected in the

 

 

 

 

Drive-Head register.

 

 

 

 

While a DMA operation is in progress, -CS0

 

 

 

 

(-CE1) and -CS1 (-CE2) are held negated

 

 

 

 

and the width of the transfers is 16 bits.

 

 

 

 

If there is no hardware support for True IDE

 

 

 

 

DMA mode in the host, this output signal is

 

 

 

 

not used and should not be connected at

 

 

 

 

the host. In this case, the BIOS must report

 

 

 

 

that DMA mode is not supported by the

 

 

 

 

host so that device drivers do not attempt

 

 

 

 

the DMA mode operation.

 

 

 

 

 

 

GND

2, 19, 22,

-

Ground. The device ground signal.

 

 

24, 26,

 

 

 

 

30, 40,

 

 

 

 

43

 

 

 

 

 

 

 

 

INTRQ

31

O

Interrupt Request. This signal is an active

 

 

 

 

high interrupt request to the host.

 

 

 

 

 

SILICONSYSTEMS PROPRIETARY

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All unauthorized use and/or reproduction is prohibited.

4210D-03DSR

PAGE 9

FEBRUARY 2, 2009

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Silicon Image SSD-DXXX(I)-4210 manual This signal is a DMA request that is used, For DMA data transfers between the host
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SSD-DXXX(I)-4210 specifications

The Silicon Image SSD-DXXX(I)-4210 is a cutting-edge solid-state drive designed for high-performance computing applications. Designed to cater to both consumer and enterprise markets, the SSD-DXXX(I)-4210 stands out for its robust features and advanced technologies, making it an ideal choice for those who demand reliability and speed.

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