FDC37C78_07 SMSC [SMSC Corporation], FDC37C78_07 Datasheet - Page 9

• Manufacturer Part Number: FDC37C78_07
• Description: Floppy Disk Controller
• Manufacturer: SMSC [SMSC Corporation]

BUFFER TYPE DESCRIPTIONS
Note: These values are for 3
7, 12, 19,
6, 18, 30,
PIN NO.
40
39
32
41
BUFFER TYPE
OCLK
OD20
I/O12
ICLK
O12
CLOCK 1
CLOCK 2
Power
Ground
IS
I
NAME
Input/output. 12 mA sink; 6 mA source
Output. 12 mA sink; 6 mA source
Open drain. 20 mA sink
Output to external crystal
Input to Crystal Oscillator Circuit (CMOS levels)
Input TTL compatible.
Input with Schmitt Trigger
X1
X2
V
GND
DESCRIPTION OF PIN FUNCTIONS
.3
CC
SYMBOL
V operation. See Operational Description for 3
MISCELLANEOUS
BUFFER
TYPE
OCLK
ICLK
9
DESCRIPTION
The
resonant
compatible oscillator is required if crystal is
not used.
24 MHz crystal. If an external clock is used,
this pin should not be connected. This pin
should not be used to drive any other drivers.
Positive Supply Voltage.
Ground Supply.
external
24
DESCRIPTION
MHz
connection
crystal.
.3
for
V/5V values.
a
A
parallel
CMOS