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37C669 参数 Datasheet PDF下载

37C669图片预览
型号: 37C669
PDF下载: 下载PDF文件 查看货源
内容描述: 98/99 PC兼容的超级I / O软盘控制器,红外支持 [PC 98/99 COMPLIANT SUPER I/O FLOPPY DISK CONTROLLER WITH INFRARED SUPPORT]
分类和应用: 控制器PC
文件页数/大小: 164 页 / 610 K
品牌: SMSC [ SMSC CORPORATION ]
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DESCRIPTION OF PIN FUNCTIONS  
BUFFER  
QFP/  
TQFP  
PIN NO.  
TYPE  
NAME  
SYMBOL  
DESCRIPTION  
63-66 Port Data  
68-71  
PD0-PD7  
The bi-directional parallel data bus is used  
to transfer information between CPU and  
peripherals.  
I/O24  
100  
IOCHRDY  
IOCHRDY  
In EPP mode, this pin is pulled low to  
extend the read/write command. This pin  
has an internal pull-up.  
OD24P  
IDE/ALT IR PINS  
24  
nIDE Enable  
nIDEEN  
IRQ_H  
This active low signal is active when the IDE  
(Note 1) is enabled and the I/O address is accessing  
an IDE register.  
O24P  
Interrupt  
Request H  
The interrupt request from a logical device  
or IRQIN may be output on the IRQH signal.  
Refer to the configuration registers for more  
information.  
024  
If EPP or ECP Mode is enabled, this output  
is pulsed low, then released to allow sharing  
of interrupts.  
OD24  
O24P  
25  
26  
nIDE Chip  
Select 0  
nHDCS0  
This is the Hard Disk Chip select  
(Note 1) corresponding to the eight control block  
addresses.  
IRRX2  
IRRX2  
I
Alternate IR Receive input  
nIDE Chip  
Select 1  
nHDCS1  
This is the Hard Disk Chip select  
O24P  
(Note 1) corresponding to the alternate status  
register.  
IR Transmit 2  
CLOCK 14  
IRTX2  
CLK14  
Alternate IR transmit output  
MISCELLANEOUS  
ICLK The external connection to a single source  
14.318 MHz clock.  
O24P  
20  
13