DESCRIPTION

The STLC5464 is a Subscriber line interface card controller for Central Office, Central Exchange, NT2 and PBX capable of handling :

- 16 U Interfacesor

- 2 Megabits line interface cards or

- 16 SLICs (Plain Old TelephoneService) or

- Mixed analogue and digital Interfaces (SLICs or U Interfaces)or

- 16 S Interfaces

- Switching Network with centralized processing

■ 32 TxHDLCs WITH BROADCASTING CAPABILITY AND/OR CSMA/CR FUNCTION WITH AUTOMATIC RESTART IN CASE OF TX FRAME ABORT

■ 32 RxHDLCs INCLUDING ADDRESS RECOGNITION

■ 16 COMMAND/INDICATE CHANNELS (4 OR 6-BIT PRIMITIVE)

■ 16 MONITOR CHANNELS PROCESSED IN ACCORDANCE WITH GCI OR V*

■ 256 x 256 SWITCHING MATRIX WITHOUT BLOCKING AND WITH TIME SLOT SEQUENCE INTEGRITY AND LOOPBACK PER BIDIRECTIONAL CONNECTION

■ DMA CONTROLLER FOR 32 Tx CHANNELS AND 32 Rx CHANNELS

■ HDLCs AND DMA CONTROLLER ARE CAPABLE OF HANDLING A MIX OF LAPD, LAPB, SS7,CASANDPROPRIETARYSIGNALLINGS

■ EXTERNAL SHARED MEMORY ACCESS BETWEEN DMA CONTROLLER AND MICROPROCESSOR

■ SINGLE MEMORY SHARED BETWEEN n x MULTI-HDLCs AND SINGLE MICROPROCESSOR ALLOWS TO HANDLE n x 32 CHANNELS

■ BUS ARBITRATION

■ INTERFACE FOR VARIOUS 8,16 OR 32 BIT MICROPROCESSORS

■ RAM CONTROLLER ALLOWS TO INTERFACE UP TO :

-16 MEGABYTES OF DYNAMIC RAM OR

-1 MEGABYTE OF STATIC RAM

■ INTERRUPT CONTROLLER TO STORE AUTOMATICALLY EVENTS IN SHARED MEMORY

■ PQFP160 PACKAGE