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參數(shù)資料
| 型號： | NM95MS14 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Plug n Play Front-End Devices for ISA-Bus Systems |
| 中文描述： | 插銷N播放前端ISA設(shè)備，總線系統(tǒng) |
| 文件頁數(shù)： | 2/8頁 |
| 文件大小： | 162K |
| 代理商： | NM95MS14 |
Connection Diagram
Commercial Temperature Range (0
§
C to
a
70
§
C)
TL/D/12315–2
Order Number NM95MS14VBH
Signals
Type
Description
SA
k
11:0
l
I
Address inputs from the ISA bus.
IORD
*
I
I/O read strobe from the ISA bus.
IOWR
*
I
I/O write strobe from the ISA bus.
AEN
I
Address Enable from ISA BusDused in conjunction with DMA.
SD
k
7:0
l
I/O
Data busDlower byteDfrom/to the ISA bus.
OSC (Note 1)
I
‘‘OSC’’ Clock from the ISA busDused for internal state machines.
RSTDRV
I
Reset input from the ISA bus.
CS
I
Chip select for Microwire port.
There should be a pulldown resistor of 4.7k on CS pin if
unused externally or directly connected to GND.
SK, DI
I
Clock and Data input lines for Microwire bus connection to access a portion (4k) on chip
EEPROM.
DO
O
Data output line for the Microwire interface detailed above.
IRQOUT
k
5:0
l
O
Connection to ISA bus interrupt request pins. On-chip interrupt request(s) may be connected to
any 6 of the ISA IRQ lines.
IRQIN
k
1:0
l
I
Interrupt request from on-board logic
DRQin/IOCS2
*
I
DMA request from on-board logic, or Programmable chipselect (2) depending on mode
selected.
DACKOUT
*
/IOCS3
*
O
DMA Acknowledge for on-board logic or Programmable chipselect (3) depending on mode
selected.
ISADRQ
k
1:0
l
/
IRQOUT
k
7:6
l
O
Connection for two ISA bus DMA Request lines, or additional interrupt request lines depending
on the mode selected.
ISADACK
k
1:0
l
*
/
SA
k
13:12
l
I
DMA Acknowledge from the ISA bus or additional address lines depending on the mode
selected.
IOCS
k
1:0
l
*
O
Programmable chip selects to address on-board peripheral.
*
Signal name with a ‘‘
*
’’ means its an active low signal.
Note 1:
‘‘OSC’’ clock from ISA Bus is fixed at a standard frequency of 14.318 MHz. NM95MS14 is designed and tested for 14.318 MHz. However the NM95MS14
can handle frequencies up to 24 MHz though it is not 100% tested.
http://www.national.com
2
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| NM95MS14S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Plug-and-Play Controller |
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| NM95MS14VBH | 制造商:Texas Instruments 功能描述:PLUG-AND-PLAY CONTROLLER, 48 Pin, QFP |
| NM95MS15 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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