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.