28392-BRF-001-A_15 Datasheet, PDF (1/4 Pages) M/A-COM Technology Solutions, Inc. – Quad/x16/Octal T1/E1/J1 Framers

™
A CONEXANT BUSINESS
Quad/x16/Octal T1/E1/J1 Framers
CX28392/8394/8398/8395
Fully-Featured T1/E1/J1 Framers
The highly integrated T1/E1/J1 framers from Mindspeed
Technologies™ drive down per-port framer costs,
support a scalable system roadmap, and provide a single
3.3 V chip for T1, E1 and J1 applications. They support
current ANSI, ETSI, ITU-T, TTC-JT and Bellcore standards.
Physical-layer support is provided for alarm generation
and detection, error monitoring, per-channel trunk
conditioning, and Facility Data Link (FDL) maintenance.
Data link layer support is provided for signaling channels
(LAPD/SS7) as well as robbed bit (T1) and time slot
16 (E1) Channel Associated Signaling buffers.
A serial Time Division Multiplex (TDM) system bus
interface allows the backplane Pulse Code Modulation
(PCM) data highway to operate at rates from 1.536 to
8.192 Mbps, with separate TDM buses or combinations
of up to four ports multiplexed onto a single TDM bus.
Provision of both transmit and receive slip buffers means
that the system interface may be connected to a common
backplane for both T1 and E1 services. An additional
benefit of this flexibility is that a gapped system interface
may be used, at clock rates up to 8.192 MHz.
> KEY FEATURES
> 2,4,8 or 16 T1/E1/J1 framers > Dual HDLC controllers
in one package
per framer
> T1: SF, ESF, SLC-96, T1DM,TTC > Two-frame transmit and
JT (J1)
receive PCM slip buffers
> E1: PCM-30, G.704, G.706, G.732, > Single 3.3 V power supply
ETS 300 011, INS 500
The parallel eight-bit microprocessor port supports
Intel- or Motorola-style interfaces. Control and status
registers may be memory-mapped and all interrupts from
real-time events may be separately masked and latched.
An embedded serial port is included in the CN8394 and
CN8398 as an extension of the parallel microprocessor
interface and may be used to control external line
interface units (LIUs) and other peripheral devices. The
framers may be connected directly to most LIUs for
non-multiplexed T1 or E1 connections, or to an external
mux for higher-rate connections, such as DS3 and E3.
Both unipolar (single-rail) non-return to zero (NRZ) and
bipolar encoded line interface formats are supported.
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