ELECTRICAL SPECIFICATION

 

 

SSD-CXXX(I)-3150 DATA SHEET

 

 

Table 8: Signal Descriptions (Continued)

 

 

 

 

 

 

 

 

Signal Name

Pin

Type

Description

 

 

 

 

 

 

 

 

-ATA SEL

 

 

To enable true IDE mode, this input

 

 

(True IDE mode)

 

 

should be grounded by the host.

 

 

 

 

 

 

 

 

-RDY/-BSY

37

O

In memory mode, this signal is:

 

 

(PC Card memory

 

 

• Set high when the SiliconDrive CF

 

 

mode)

 

 

is ready to accept a new data

 

 

 

 

 

transfer operation.

 

 

 

 

 

• Held low when the card is busy.

 

 

 

 

 

The host memory card socket must

 

 

 

 

 

provide a pull-up resistor.

 

 

 

 

 

At power-up and reset, the RDY/-BSY

 

 

 

 

 

signal is held low (busy) until the

 

 

 

 

 

SiliconDrive CF has completed its

 

 

 

 

 

power-up or reset function. No access

 

 

 

 

 

of any type should be made to the

 

 

 

 

 

SiliconDrive CF during this time. The

 

 

 

 

 

RDY/-BSY signal is held high

 

 

 

 

 

(disabled from being busy) whenever

 

 

 

 

 

the SiliconDrive CF has been

 

 

 

 

 

powered up with +RESET

 

 

 

 

 

continuously disconnected or

 

 

 

 

 

asserted.

 

 

 

 

 

 

 

 

-IREQ

 

 

I/O Operation. After the SiliconDrive

 

 

(PC Card I/O

 

 

CF has been configured for I/O

 

 

mode)

 

 

operation, this signal is used as

 

 

Input Acknowledge

 

 

-Interrupt Request. This line is strobed

 

 

 

 

low to generate a pulse mode

 

 

 

 

 

 

 

 

 

 

interrupt or held low for a level mode

 

 

 

 

 

interrupt.

 

 

 

 

 

 

 

 

-IREQ

 

 

In true IDE mode, this signal is the

 

 

(True IDE mode)

 

 

active high Interrupt Request to the

 

 

 

 

 

host.

 

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All unauthorized use and/or reproduction is prohibited.

3150C-10DSR

PAGE 11

FEBRUARY 2, 2009

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Image 21
Silicon Image SSD-C08G(I)-3150 manual Ata Sel, Rdy/-Bsy, Ireq