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)： 16/152頁
文件大?。?/td> 621K
代理商： FDC37C666GT
16
DESCRIPTION OF PIN FUNCTIONS
BUFFER
TYPE
nIDEENHI
O8
PIN NO.
24
NAME
SYMBOL
DESCRIPTION
nIDE High Byte
Enable
S1CF0
I
This signal is active low only in the AT
mode, and when IO16CSB is also active.
The I/O addresses for which this pin reacts
are 1F0H-1F7H in primary address mode or
170H-177H in secondary address mode.
This pin is not used in XT mode.
FDC37C666GT (Adapter Mode): Primary
Serial Configuration 0. Read and latched
during reset active to define the address of
the Secondary Serial Port.
This is the Hard Disk Chip select
corresponding to addresses 1F0H-1F7H in
primary address mode or 170H-177H in
secondary address mode in the AT mode
and addresses 320H-323H in the XT mode.
25
nHard Disk Chip
Select
nHDCS0
IDEACF
O24
I
FDC37C666GT
Address Control. Refer to FDC37C666GT
hardware
configuration
information. Read and latched during
reset active.
This is the Hard Disk Chip select
corresponding to 3F6H,3F7H for primary
address mode or 376H,377H for secondary
address mode in the AT mode and
addresses 3F6H,3F7H in the XT mode.
(Adapter
Mode):
IDE
for
more
26
nHard Disk Chip
Select
nHDCS1
FACF
O24
I
FDC37C666GT (Adapter Mode): Floppy
Disk
Address
Control.
FDC37C666GT hardware configuration for
more information. Read and latched during
reset active.
This input indicates, in AT mode only, when
16 bit transfers are to take place. This
signal is generated by the hard disk
interface. Logic "0" = 16 bit mode; logic "1"
= 8 bit mode.
Refer
to
27
nI/O 16 Bit
Indicator
nIOCS16
nHDACK
I
I
In the XT mode, this is the Hard Disk
Controller DMA Acknowledge, low active.
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