NM95MS15 Datasheet | National Semiconductor

Features a Description D . w The NM95MS15 is one of the family of single chip solutions designed to provide plete 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 plete 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 Y Y Y Y Y U 4 t m o .c November 1996 NM95MS15 Plug and Play Front-End Device for ISA-Bus Systems Single chip implementation of plete 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 m A drivers for data outputs 64-pin TQFP package Block Diagram w w .D w TL D 12394 t a S a e h t e U 4 .c m o TL D 12394- 1 C1996 National Semiconductor Corporation RRD-B30M126 Printed in U S A http national w w w .D a S a t e e h U 4 t m o .c Connection Diagram TL D 12394- 2 mercial Temperature Range (0 C to a 70 C) Order Number NM95MS15S Signals SAk19 0l IORD IOWR AEN SDk7 0l OSC (Note 1) RSTDRV SK DI CS DO IRQOUTk5 0l IRQOUT6 DRQIN1 IRQOUT7 DACKOUT1 IRQINk1 0l DRQIN0 IOCS2 DACKOUT0 IOCS3 ISADRQk2 0l IRQOUTk10 8l ISADACKk2 0l IOCSk1 0l MEMCSk1 0l Means active low...