描述 Description

Fully Integrated T1/E1 Framer and Line InterfaceThe Bt8370/8375/8376 is a family of single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces, operating at 1.544 Mbps or 2.048 Mbps. These devices combine a sophisticated framer, transmit and receive slip buffers, and an on-chip physical line interface to provide a complete T1/E1 transceiver.
The fully featured Bt8370 and short-haul Bt8375 and Bt8376 devices provide a programmable clock rate adapter for simplifying system bus interfacing. The adapter synthesizes standard clock signals from the receive or transmit line rate clocks or from an external referenceDistinguishing

特性 Features

? Single-chip T1/E1 framer with short/long-haul physical line interface
? Frames to popular T1/E1 standards:
?? – T1: SF, ESF, SLC? 96, T1DM
?? – E1: PCM-30, G.704, G.706, G.732 ISDN primary rate
? On-chip physical line interface compatible with:
?? – DSX-1/E1 short-haul signals
?? – DS-1 (T1.403) and ETSI long-haul signals
? Two-frame transmit and receive PCM slip buffers
? Clock rate adapter synthesizes jitter
?? attenuated system clocks from an internal or external reference
? Parallel 8-bit microprocessor port supports Intel or Motorola buses
? Automated Facility Data Link (FDL) management
? BERT generation and counting
? Two full-duplex HDLC controllers for data link and LAPD/SS7 signaling
? B8ZS/HDB3/Bit 7 zero suppression
? 80-pin MQFP surface-mount package
? Operates from a single +5 Vdc ±5% power supply
? Low-power CMOS technologyApplications
? T1/E1 Channel Service Unit/Data Service Unit (CSU/DSU)
? Digital Access Cross-Connect Systems (DACS)
? T1/E1 Multiplexer (MUX)
? PBXs and PCM channel bank
? T1/E1 HDSL terminal unit
? ISDN Primary Rate Access (PRA)

應(yīng)用 Application

? T1/E1 Channel Service Unit/Data Service Unit (CSU/DSU)
? Digital Access Cross-Connect Systems (DACS)
? T1/E1 Multiplexer (MUX)
? PBXs and PCM channel bank
? T1/E1 HDSL terminal unit
? ISDN Primary Rate Access (PRA)