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e e NM95MS15 h Plug S and Play Front-End Device for ISA-Bus Systems a t General Features a Description D . w
The N...
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e e NM95MS15 h Plug S and Play Front-End Device for ISA-Bus Systems a t General Features a Description D . w
The NM95MS15 is one of the family of single chip solutions designed to provide complete Plug and Play capability for ISA bus systems The NM95MS15 includes the necessary state machine logic to manage the Plug and Play protocol in addition to switches for steering Interrupt and DMA requests It also features a built-in 4k bits of serial EEPROM for storing the resource data specified in the Plug and Play Standard In addition 4k bits of the EEPROM is available for use by other on-board logic This device provides a truly complete single-chip solution for implementing Plug and Play on ISA-Bus adapter cards The NM95MS15 supports two logical devices with a flexible choice of DMA IRQ selection 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
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m o .c
November 1996
NM95MS15 Plug and Play Front-End Device for ISA-Bus Systems
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Single chip implementation of complete Plug and Play Standard Direct interface to ISA-bus Three modes of operation Normal DMA mode Extended Interrupt mode Extended DMA mode 6 8 or 11 ISA-bus interrupt lines and 3 DRQ DACK lines supported (IRQ’s and DRQ’s are mode dependent) On-chip EEPROM for resource request table Additional 4k bits of on-chip EEPROM available for external access 24 mA driv...
