28370-BRF-001-A_15 Datasheet, PDF (1/4 Pages) M/A-COM Technology Solutions, Inc. – T1/E1 Framer and Line Interface

™
A CONEXANT BUSINESS
T1/E1 Framer and Line Interface
Bt8370/8375/8376
Fully Integrated T1/E1 Framer
and Line Interface
Conexant’s Bt8370 provides OEMs with a fully-featured
single chip framer and line interface implementation
for T1/E1 and Integrated Service Digital Network (ISDN)
primary rate interfaces operating at 1.544 Mbps or
2.048 Mbps.
> KEY FEATURES
> On-chip T1/E1 short-haul and > Two-frame, transmit and
long-haul line interface
receive PCM slip buffers
> On-chip Clock Rate Adapter > Dual HDLC controllers
(CLAD)/System Synchronizer
> Digital (crystal-less) jitter
attenuator selectable for
transmitter/receiver
By combining a sophisticated framer and transmit/
receive slip buffers with an on-chip short/long-haul
physical line interface, the Bt8370 delivers a reliable,
high performance system solution for T1/E1, HDSL
terminal units, Multiplexers, Channel/Data Service Units
(CSU/DSU), Digital Access Cross-Connect Systems
(DACS), PBXs, PCM channel banks and other applications.
A programmable clock rate adapter eases system bus
interfacing by synthesizing standard clock signals from
the receive or transmit line rate clocks or from an
external clock reference input.
For applications that do not require long-haul performance,
the Bt8375 and Bt8376 are available.
The following table summarizes the capabilities
of the Bt8370 family.
Feature
Single Chip T1/E1
T1 long-haul
Number of HDLC controllers
Clock Adapter output (KHz)
Bt8370
Yes
Yes
2
8-16384
Bt8375 Bt8376
Yes Yes
No
No
2
1
8-16384 None
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