參數(shù)資料
型號： FDC37C666GT
廠商： STANDARD MICROSYSTEMS CORP
元件分類： 存儲控制器/管理單元
英文描述： High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers
中文描述： 1 Mbps, IDE COMPATIBLE, FLOPPY DISK DRIVE CONTROLLER, PQFP100
封裝： QFP-100
文件頁數(shù)： 7/152頁
文件大小： 621K
代理商： FDC37C666GT
7
DESCRIPTION OF PIN FUNCTIONS
BUFFER
TYPE
PINTR1
O24
PIN NO.
39
NAME
SYMBOL
DESCRIPTION
Parallel Port
Interrupt
Request 1
OD24
This interrupt from the Parallel Port is
enabled/disabled via bit 4 of the Parallel
Port
Control
Register.
configuration registers CR1 and CR3 for
more information.
Refer
to
If EPP or ECP Mode is enabled, this output
is pulsed low, then released to allow sharing
of interrupts.
This
active
high
FDC37C665GT and must be valid for 500
ns minimum. The effect on the internal
registers is described in the appropriate
section. The configuration registers are not
affected
by
this
FDC37C666GT, the falling edge of reset
latches the jumper configuration. The
jumper select lines must be valid 50 ns prior
to this edge.
57
Reset
RST
IS
signal
resets
the
reset.
In
the
FLOPPY DISK INTERFACE
IS
16
nRead Disk Data nRDATA
Raw serial bit stream from the disk drive,
low active. Each falling edge represents a
flux transition of the encoded data.
This active low high current driver allows
current to flow through the write head. It
becomes active just prior to writing to the
diskette.
This active low high current driver provides
the encoded data to the disk drive. Each
falling edge causes a flux transition on the
media.
This high current output selects the floppy
disk side for reading or writing. A logic "1"
on this pin means side 0 will be accessed,
while a logic "0" means side 1 will be ac-
cessed.
10
nWrite
Gate
nWGATE
OD48
9
nWrite
Data
nWDATA
OD48
11
nHead
Select
nHDSEL
OD48
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