Introduction
Increasingly, enhanced telephony services are provided by equipment based on mass-market computer-telephony architectures. The H.100 timedivision multiplexed (TDM) bus has emerged as the industry standard used in these systems. The Ambassador T8100 is a single device that provides a complete interface for H.100/H.110-based systems.

Features
■ Complete solution for interfacing board-level circuitry to the H.100 telephony bus
■ H.100 compliant interface; all mandatory signals
■ Programmable connections to any of the 4096 time slots on the H.100 bus
■ Up to 16 local serial inputs and 16 local serial outputs, programmable for 2.048 Mbits/s, 4.096 Mbits/s, and 8.192 Mbits/s operation per CHI specifications
■ Programmable switching between local time slots, up to 1024 connections
■ Programmable switching between local time slots and H.100 bus, up to 256 connections
■ Choice of frame integrity or minimum latency switching on a per-time-slot basis
   — Frame integrity to ensure proper switching of wideband data
   — Minimum latency switching to reduce delay in voice channels
■ On-chip phase-locked loop (PLL) for H.100, MVIP, or SC-Bus clock operation in master or slave clock modes
■ Serial TDM bus rate and format conversion between most standard buses
■ Optional 8-bit parallel input and/or 8-bit parallel output for local TDM interfaces
■ High-performance microprocessor interface
   — Provides access to device configuration registers and to time-slot data
   — Supports both Motorola‡ nonmultiplexed and Intel§ multiplexed/nonmultiplexed modes
■ Two independently programmable groups of up to 12 framing signals each
■ 3.3 V supply with 5 V tolerant inputs and TTL-compatible outputs
■ Boundary-scan testing support
■ 208-pin, plastic SQFP package
■ 217-pin BGA package (industrial temperature range)