USB97C201-MN SMSC [SMSC Corporation], USB97C201-MN Datasheet - Page 11

• Manufacturer Part Number: USB97C201-MN
• Description: USB 2.0 ATA/ ATAPI Controller
• Manufacturer: SMSC [SMSC Corporation]

SMSC DS – USB97C201
USB Bus
Data
USB
Transceiver
Filter
USB
Transceiver
Bias
Termination
Resistor
Full Speed
USB Data
Memory Data
Bus
Memory
Address Bus
Memory Write
Strobe
Memory Read
Strobe
IO Read
Strobe
IO Write
Strobe
USB-
USB+
LOOPFLTR
RBIAS
RTERM
FS-
FS+
MD[7:0]
MA[15:0]
nMWR
nMRD
nIOR
nIOW
PRELIMINARY
MEMORY/IO INTERFACE
IO-U
IO-U
IO12
O12
O12
O12
O12
O12
USB INTERFACE
Page 11
These pins connect to the USB bus data
signals.
This pin provides the ability to supplement the
internal filtering of the transceiver with an
external network, if required.
A 9.09 Kohm precision resistor is attached
from ground to this pin to set the transceiver’s
internal bias currents.
A precision 1.5Kohm precision resistor is
attached to this pin from a 3.3V supply.
These pins connect to the USB- and USB+
pins through 31.6 ohm series resistors.
These signals are used to transfer data
between the internal CPU and the external
program memory.
These signals address memory locations
within the external memory.
Program Memory Write; active low
Program Memory Read; active low
XDATA space Read; active low
XDATA space Write; active low
Rev. 03/25/2002