FDC37C669-MS Standard Microsystems (SMSC), FDC37C669-MS Datasheet - Page 111

• Manufacturer Part Number: FDC37C669-MS
• Manufacturer: Standard Microsystems (SMSC)

Specifications of FDC37C669-MS

• Pin Count: 100
• Lead Free Status / RoHS Status: Compliant

FDD Interface Pins
All pins in the FDD interface which can be connected
directly to the floppy disk drive itself are either DISABLED
or
TRISTATED.
Table 45 - State of Floppy Disk Drive Interface Pins in Powerdown
MOTEN[0:3]
DRATE[0:1]
FDD Pins
WRDATA
DSKCHG
DENSEL
RDATA
DS[0:3}
HDSEL
DRV2
TRK0
STEP
INDX
DIR
WP
WE
Pins
Output Pins
Input Pins
State in Auto Powerdown
111
used for local logic control or part programming are
unaffected. Table 47 depicts the state of the floppy disk
drive interface pins in the powerdown state.
Tristated
Tristated
Tristated
Tristated
Active
Active
Active
Active
Active
Input
Input
Input
Input
Input
Input