MK5027 - ST Microelectronics

MK5027 SS7 SIGNALLING LINK CONTROLLER

The SGS-THOMSON Signalling System #7 Signalling Link Controller (MK5027) is a VLSI semiAugust 1989 DIP48 PLCC52 conductor device which provides a complete link control function conforming to the 1988 CCITT version of SS7. This includes frame formatting, transparency (so called ”bit-stufling”), error recovery by two types of retransmission, error monitorin.

Features

of the MK5027 is its buffer management which includes on-chip DMA. This feature allows users to handlq multiple packets of receive and transmit data at a time. (A conventional data linkcontrol chip plus a separate DMA chip would handle data for only a single block at a time.) The MK5027 may be used with any of several popular 16 and 8 bit microprocessors, such as 68000, 6800, Z8000, Z80, LSI-11, 8086, 8088, 8080, etc. Figure 1: Pin Connection. VSS-GND DAL07 DAL06 DAL05 DAL04 DAL03 DAL02 DAL01 DAL00 READ INTR DALI DALO DAS BMO, BYTE, BUSREL BMI, BUSAKO HOLD, BUSRQ ALE, AS HLDA CS ADR READY RESE.