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PDF NM95MS15 Data sheet ( Hoja de datos )
| Número de pieza | NM95MS15 | |
| Descripción | Plug n Play Front-End Devices for ISA-Bus Systems | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NM95MS15 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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.com November 1996
NPalMutag95SaMnhSde1Pe5lta4yUFront-End Device for ISA-Bus SystemsGeneral Description
The NM95MS15 is one of the family of single chip solutions
.Ddesigned to provide complete Plug and Play capability for
ISA bus systems The NM95MS15 includes the necessary
w state machine logic to manage the Plug and Play protocol in
w addition to switches for steering Interrupt and DMA re-
quests It also features a built-in 4k bits of serial EEPROM
w for storing the resource data specified in the Plug and Play
Standard In addition 4k bits of the EEPROM is available for
muse by other on-board logic This device provides a truly
complete single-chip solution for implementing Plug and
oPlay on ISA-Bus adapter cards The NM95MS15 supports
two logical devices with a flexible choice of DMA IRQ selec-
.ction I O and MEMORY Chip Select generation
NM95MS15 is implemented using National’s advanced
CMOS process and operates from a single power supply
The NM95MS15 is available in a 64-pin TQFP package
Features
Y Single chip implementation of complete Plug and Play
Standard
Direct interface to ISA-bus
Y Three modes of operation
Normal DMA mode
Extended Interrupt mode
Extended DMA mode
Y 6 8 or 11 ISA-bus interrupt lines and 3 DRQ DACK
lines supported (IRQ’s and DRQ’s are mode
dependent)
Y On-chip EEPROM for resource request table
Y Additional 4k bits of on-chip EEPROM available for ex-
ternal access
Y 24 mA drivers for data outputs
Y 64-pin TQFP package
t4UBlock Diagram
www.DataShee www.DataSheet4U.comC1996NationalSemiconductorCorporation TL D 12394
TL D 12394– 1
RRD-B30M126 Printed in U S A
http www national com
1 page  
Resource Allocation Amongst the Two Logical Devices
NM95MS15 supports two Plug n Play logical devices Logical Device 0 and Logical Device 1 The total resource structure
supported by the NM95MS15 is allocated to each of these logical devices as follows
Mode ‘‘00’’
1) I O chipselects
2) Memory chipselects
3) Local IRQ input
4) Local DQR input
Mode ‘‘01’’
1) I O chipselects
2) Memory chipselects
3) Local IRQ input
Mode ‘‘10’’
1) I O chipselects
2) Memory chipselects
3) Local IRQ input
4) Local DQR input
Logical Device 0
IOCS0
MEMCS0
IRQIN0
DRQIN0
Logical Device 0
IOCS0 and IOCS2
MEMCS0
IRQIN0
Logical Device 0
IOCS0
MEMCS0
IRQIN0
DRQIN0
Logical Device 1
IOCS1
MEMCS1
IRQIN1
––
Logical Device 1
IOCS1 and IOCS3
MEMCS1
IRQIN1
Logical Device 1
IOCS1
MEMCS1
IRQIN1
DRQIN1
5 http www national com
5 Page 
This datasheet has been download from:
www.datasheetcatalog.com
Datasheets for electronics components.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet NM95MS15.PDF ] | |
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