NM95MS16 Datasheet | Fairchild Semiconductor

NM95MS16 Plug and Play Front-End Devices for ISA-BUS Systems July 1998 NM95MS16 Plug and Play Front-End Devices for ISA-BUS Systems General Description The NM95MS16 is the smaller of a family of devices designed to provide plete Plug and Play Capability for ISA bus systems. The NM95MS16 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 2 kbits of serial EEPROM for storing the resource data specified in the Plug and Play Standard. In addition, 4 kbits of 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 NM95MS16 supports one logical device with a flexible choice of DMA/IRQ selection and I/O Chipselect generation as well as offering 16-bit addressing in Mode 1. NM95MS16 is implemented using Fairchild’s Advanced CMOS process and operates single power supply. The NM95MS16 is available in a 48-pin TQFP package and 52-pin PLCC package. Features s plete Implementation of Plug and Play Standard - Direct interface to ISA bus s Two modes of operation - DMA mode - Extended Interrupt mode (Windows® 95 logo patible) s 6 or 8 ISA bus interrupt lines and 2 DRQ/DACK lines supported s On-chip EEPROM for resource request table s Additional 4 kbits of on-chip EEPROM available for external access s 24 m A Drivers for Data outputs s plete pliance to ISA Pn P specification (Ver. 1.0A) s 48-Pin TQFP, and 52-Pin PLCC Packages Block Diagram Osc. Rstdrv From ISA Bus Address Control State Machine EEPROM MICROWIRE Port Decoder & Control Register Block Data Buffer SD<0:7> ISA Bus Address From ISA Bus Control DACKx- LIRQx LDRQx Function Module Support Logic IOCS<0:2>- LDACKx- IRQx DRQx To ISA Bus DS012601-1 Windows® 95 is a registered trademark of Microsoft Corporation. © 1998 Fairchild Semiconductor Corporation .fa...