Description The TTSI4K32T Time-Slot Interchanger (TSI) switches data between 32 full-duplex, serial, timedivision multiplexed highways. The TTSI4K32T can make any connection between 4096 input and output time slots. Features ■ Thirty-two full-duplex, serial time-division multiplexed (TDM) highways. ■ Full availability, nonblocking 4096-channel time/ space switch. ■ 2.048 Mbits/s (32 time slots), 4.096 Mbits/s (64 time slots), or 8.192 Mbits/s (128 time slots) data rates, independently programmable per highway. ■ 64 kbits/s granularity with optional 32 kbits/s (4-bit) and 16 kbits/s (2-bit) subrate switching, selectable per highway. ■ Low-latency mode for voice channels. ■ Frame integrity for wideband data applications. ■ Concentration highway interface (CHI) compatible with the IOM2, GCI, K2, SLD, MVIP*, ST-Bus, SC-Bus, and H.100. ■ Single highway clock and frame synchronization input. ■ Independently programmable bit and byte offsets with 1/4 bit resolution for all highways. ■ Capable of broadcasting data to the transmit highways from a variety of sources including host data. ■ High-impedance control per time slot. ■ Software-compatible family of 1K, 2K, and 4K timeslot interchangers. ■ Thirty-two independent high-impedance indicators (output enables) for transmit highways, allowing external drivers. ■ Direct access to device registers, connection store, and data store via microprocessor interface. ■ IEEE†1149.1 boundary scan (JTAG). ■ Test-pattern generation and checking for on-line system testing (PRBS, QRSS, or user-defined byte). ■ User-accessible BIST for data and connection stores. ■ 3.3 V power supply with 5 V tolerant I/O. ■ Low-power, high-density CMOS technology, and TTL compatible switching thresholds. ■ 217-pin PBGA package. ■ –40 °C to +85 °C operating temperature range. Applications ■ Small and medium digital switch matrices. ■ Computer telephony integration (CTI). ■ Access concentrators. ■ PABX. ■ Cellular infrastructure. ■ ISP modem banks. ■ T1/E1 multiplexers. ■ Digital cross connects. ■ Digital loop carriers. ■ Multiport DS1/E1 service cards. ■ LAN/WAN gateways. ■ TDM highway data rate adaptation.
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