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參數(shù)資料
| 型號(hào)： | USB97C202-MN-05 |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 總線控制器 |
| 英文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PQFP100 |
| 封裝： | 12 X 12 MM, 1.40 MM HEIGHT, STQFP-100 |
| 文件頁(yè)數(shù)： | 2/20頁(yè) |
| 文件大小： | 343K |
| 代理商： | USB97C202-MN-05 |
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USB 2.0 ATA/ATAPI Controller
Datasheet
SMSC USB97C202
Page 10
Revision 1.6 (11-05-04)
DATASHEET
DISK DRIVE INTERFACE
IDE Chip
Select 0
IDE_nCS0
O20
This pin is the active low chip select 0 signal for
the ATA/ATAPI interface.
In part number USB97C202-MN-03 or later ROM
codes, this pin is high impedance when VBUS is
removed.
IDE Chip
Select 1 0
IDE_nCS1
O20
This pin is the active low select 1 signal for the
ATA/ATAPI interface.
In part number USB97C202-MN-03 or later ROM
codes, this pin is high impedance when VBUS is
removed.
IDE Data
IDE_D[0:12]
IO20
These pins are bits 0-12 of the ATA/ATAPI bi-
directional data bus.
In part number USB97C202-MN-03 or later ROM
codes, this pin is high impedance when VBUS is
removed.
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.
Full Speed
USB Data
FS-
FS+
IO-U
These pins connect to the USB- and USB+
pins through 31.6 ohm series resistors.
MEMORY/IO INTERFACE
Memory Data
Bus
MD[7:0]
IO12PU When ROMEN=0, these signals are used to
transfer data between the internal CPU and the
external program memory. When ROMEN=1, a
weak internal pull up is activated to prevent
these pins from floating.
Memory
Address Bus
MA[15:0]
O12
These signals address memory locations within
the external memory.
Memory Write
Strobe
nMWR
O12
Program Memory Write; active low
Memory Read
Strobe
nMRD
O12
Program Memory Read; active low
IO Read
Strobe
nIOR
O12
XDATA space Read; active low
IO Write
Strobe
nIOW
O12
XDATA space Write; active low
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