MT8982 Datasheet | Mitel Networks Corporation

Features - ST-BUS/GCI patible switch matrix - 64 channel non-blocking time switch - 2 x 32 channel serial inputs and outputs - Per-channel tristate control - 4-pin serial microprocessor interface .. - Patented message mode - Low power consumption (10 m W) - Single 5 volt supply ISSUE 6 May 1995 Ordering Information MT8982AC 16 Pin Ceramic DIP MT8982AE 16 Pin Plastic DIP MT8982AS 16 Pin SOIC MT8982AN 20 Pin SSOP -40 to +85°C Description The MT8982 Small Digital Switch (Mini DX) is a nonblocking CMOS time switch with a capacity of up to 64 - 8 bit Time Division Multiplexed (TDM) encoded voice or data channels. It is a size-optimized version of MITEL's successful MT8980D Digital Switches, providing switching capability in cost sensitive applications such as telephone sets and digital key systems. The TDM interface to the device is via two pairs of 2048 kbit/s serial streams with 32 64 kbit/s channels per stream (ST-BUS). A serial microport provides access to the device for programming the required connections. The serial microport is patible with most mon microcontrollers. The unique message mode capability allows the MT8982 to act as a controller for other members of MITEL's ST-BUS family of ponents. Applications - - - - - - Cost sensitive digital switching applications Digital key telephone systems GCI/ST-BUS conversion ST-BUS device control interface ISDN telephone set support circuit Interprocessor munication STi0 STi1 Serial to Parallel Converter 64 x 8 Data Memory Output Mux Parallel to Serial Converter STo0 STo1 F0i C4i F0o Address Counters Address Mux Data Mux Rx D/CSTi0 Tx D/NC SCLK/CSTi1 CS/CMS MPS Address Mux ODE Serial Microport 64 x 9 Connect Memory 3-State Control Figure 1 - Functional Block Diagram 2-31 ISO-CMOS STi0 STi1 STo0 STo1 Rx D/CSTi0 Tx D/NC SCLK/CSTi1 VSS 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VDD ODE IC MPS F0o F0i C4i CS STi0 STi1 NC STo0 STo1 Rx D/CSTi0 Tx D/NC NC SCLK/CSTi1 VSS 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15...