USB2005 datasheet(10/21 Pages) SMSC

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USB2.0 ATA/ATAPI Controller with PD-DRM

Datasheet

Revision 0.2 (06-07-05)

SMSC USB2005

DATASHEET

Chapter 5 Pin Description

Table 5.1 USB2005 Pin Descriptions

DISK DRIVE INTERFACE

IDE DMA Request

IDE_DRQ

This pin is the active high DMA request from

the ATA/ATAPI interface.

IDE IO Read Strobe

IDE_nIOR

O20

This pin is the active low read signal for the

interface.

IDE Register

Address 1

IDE_SA1

O20

This pin is the register select address bit 1

signal for the ATA/ATAPI interface.

IDE Register

Address 0

IDE_SA0

O20

This pin is the register select address bit 0

signal for the ATA/ATAPI interface.

IDE Register

Address 2

IDE_SA2

O20

This pin is the register select address bit 2

signal for the ATA/ATAPI interface.

IDE Data

IDE_D15

IO20

This pin is the bi-directional data bus bit 15

signal for the ATA/ATAPI interface.

IDE IO Write Strobe

IDE_nIOW

O20

This pin is active low write signal for the

ATA/ATAPI interface.

IDE DMA

Acknowledge

IDE_nDACK

O20

This pin is the active low DMA acknowledge

signal for the ATA/ATAPI interface.

IDE Interrupt

Request

IDE_IRQ

This pin is the active high interrupt request

signal for the ATA/ATAPI interface.

IDE Data

IDE_D13

IO20

This pin is the bi-directional data bus bit 13

signal for the ATA/ATAPI interface.

IDE Data

IDE_D14

IO20

This pin is the bi-directional data bus bit 14

signal for the ATA/ATAPI interface.

IDE Chip Select 0

IDE_nCS0

O20

This pin is the active low chip select 0 signal for

the ATA/ATAPI interface.

IDE Chip Select 1 0

IDE_nCS1

O20

This pin is the active low select 1 signal for the

ATA/ATAPI interface.

IDE Data

IDE_D[0:12]

IO20

These pins are bits 0-12 of the ATA/ATAPI bi-

directional data bus.

IO Ready

IORDY

This pin is the active high IORDY signal from

the IDE drive.

USB INTERFACE

USB Bus Data

USB-

USB+

IO-U

These pins connect to the USB bus data

signals.

USB Transceiver

Filter

LOOPFLTR

This pin provides the ability to supplement the

internal filtering of the transceiver with an

external network, if required.

USB Transceiver

Bias

RBIAS

A 9.09 Kohm precision resistor is attached from

ground to this pin to set the transceiver’s

internal bias currents.

Termination Resistor

RTERM

A precision 1.5Kohm precision resistor is

attached to this pin from a 3.3V supply.

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