USB97CFDC2-MV-01P Standard Microsystems (SMSC), USB97CFDC2-MV-01P Datasheet - Page 10

• Manufacturer Part Number: USB97CFDC2-MV-01P
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB97CFDC2-MV-01P

• Lead Free Status / RoHS Status: Supplier Unconfirmed

SMSC DS – USB97CFDC2-01
1-7, 9-13, 23,
51, 78, 80,
83-87, 89-92,
94-100
8, 19, 27, 43,
14, 39, 60,
52, 66, 79,
PIN NO.
82, 93
81, 88
18
20
24
25
26
21
22
15
16
Crystal Output XTAL2
Drive Density
Output
Drive Ready
Drive Power
RESET input nRESET
Test output
Test input
Test Enable
ROM Enable ROMEN
NAME
HDO
nDRVRDY
nFDPWR
TSTOUT
nTEST
nTESTEN
VDD
GND
NC
SYMBOL
POWER, GROUND, AND NO CONNECTS
DATASHEET
BUFFER
OCLKx
TYPE
OD24
O8
IP
IS
I
I
I
I
Page 10
This is the other terminal of the crystal, or left open
when an external clock source is used to drive
XTAL1/CLKIN. It may not be used to drive any
external circuitry other than the crystal circuit.
program ROM is enabled. If tied low, external
program memory can be used for custom
applications.
In some configurations of the USB97CFDC, this
drive pin indicates if a 640/720K disk is inserted in
the drive. Polarity of this signal is determined by
the configuration selected by the OPT[3:0] pins at
reset. If this pin is not driven by the drive, it should
be tied low.
drive, after DS0 goes active, indicates that the
system may activate MTR0. If the drive does not
supply this signal, this pin should be tied low.
This active low signal is intended to activate an
external power switch, either in the drive or on the
system board, to supply power to the floppy disk
drive. It is active whenever the USB97CFDC2-01
is not in SUSPEND mode.
This active low signal is used by the system to
reset the chip. The active low pulse should be at
least 100ns wide.
This signal is used for testing the chip via an
internal XNOR chain. User should normally leave it
unconnected.
This signal is a manufacturing test pin. It should
be tied to VDD for normal operation.
This active low signal places the device into board
test mode using the XNOR chain. For normal
operation this pin should be tied high. See Board
Test Mode Operation on page 14
+3.3V power
Ground Reference
externally.
14.318Mhz Crystal
If this input is tied high or left open, the internal
An active low signal on this pin from the floppy disk
No Connect. These pins should not be connected
DESCRIPTION
Rev. 02-27-07