參數(shù)資料
型號(hào): MX98905B
廠商: Electronic Theatre Controls, Inc.
英文描述: The MX98905 is designed for easy implementation of CSMA/CD local area networks,
中文描述: 該MX98905是專為易于實(shí)現(xiàn)的多址/光盤局域網(wǎng),
文件頁(yè)數(shù): 5/86頁(yè)
文件大?。?/td> 352K
代理商: MX98905B
5
P/N: PM0365
REV. 1.3, NOV 20 ,1995
MX98905B
A. ISA BUS INTERFACE
(Continued)
SYMBOL
PIN TYPE
PIN NUMBER
DESCRIPTION
RESET
I
126
RESET : Active high. Used to reset all devices on the bus. The
MX98905 will recognize this signal only when the duration of this
signal is larger than 400 ns.
CHRDY
O
123
CHANNEL READY: Used to insert wait states into system accesses.
AEN
I
122
DMA ACTIVE: Indicates that the address lines are driven by a DMA
controller.
INT0-INT3
O
89-92
INTERRUPT REQUEST: Activation or not of these 4 signals is
determined by Configuration Registers A and C. They can be used
to either directly drive the interrupt lines or used as a 3-bit code with
strobe to generate up to 8 interrupts.
ATXT
I
61
8/16 BIT SLOT SELECT: Indicates that the MX98905 is in 8- or 16-
bit ISA bus. It is in 16-bit mode when ATXT is high ATXT has internal
pulldown register; if left unconnected, 8-bit mode is the default mode.
ISACLK
I
93
ISA CLOCK: Clock from ISA bus.
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