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USB2.0 ATA/ATAPI Controller with PD-DRM
Datasheet
Revision 0.2 (06-07-05)
10
SMSC USB2005
DATASHEET
Chapter 5 Pin Description
Table 5.1 USB2005 Pin Descriptions
DISK DRIVE INTERFACE
IDE DMA Request
IDE_DRQ
IS
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
IS
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
I
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.