PCM16C00

· PCMCIA Bus Interface
· Compliant with multi-function extension to PCMCIA Standards 3X
· PCMCIA version 21 configuration registers
· Serial EEPROM interface compatible with MICROWIRE EEPROM protocol
· 2-kbyte on chip RAM for attribute memory which shad-o0ws the CIS and is used for loading static registers
· Address decoding and control for 2 IO functions
· Logic to support any two interrupt capable IO func-tions on a PCMCIA card
· Power management and clock control
· Programmable arbitration unit for PCMCIA host and two functions
· Common memory logic
· National DP83902A Ethernet LAN support logic
· 4 Bit direction programmable generic digital port
· ISA-like interface to card function

Note 1 Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired The databook specifications should be met without exception to ensure that the system design is reli-able over its power supply temperature and outputinput loading variables National does not recommend operation outside these specifications

National's PCM16C00 acts as a standard interface between the PCMCIA bus and card-side local bus for IO and memo-ry PCMCIA cards This device allows the card designer to focus on the design of the dual IO functions while providing a one-chip solution for IO memory window control concur-rent interrupt control EEPROM interfacing and power man-agement In addition to being configurable to interface to any two ISA compatible IO functions the PCM16C00 sup-ports logic necessary to simplify a design that uses the Na-tional DP83902A ST-NIC Ethernet Controller as one of the functions

The PCM16C00 is fully compliant with PCMCIA version 21 and is compatible with serial 4-kbit and 16-kbit EEPROMs with 8-bit and 16-bit organizations that use the MICROW-TM

IRE protocol This multi-function interface IC PCM16C00 allows the system software to setup IO decode windows and provides the Attribute memory decode control that allow attribute read and write data transfers