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28222-13

ATM Transmitter/Receiver with UTOPIA Interface

Conexant Systems 

CN8223

ATM Transmitter/Receiver with UTOPIA Interface

1.0 Product Description

1.3 Line Framing Functions

1.3.3 BIP-8 Code

The octet Bit Interleaved Parity (BIP-8) code is checked and error status

generated for the Far End Block Error (FEBE) function and yellow alarm. BIP-8

code violations and framing-octet errors are counted. OOF events are detected

and counted. The transmitter output can be looped to the receiver input for test

purposes and to perform startup self-tests and diagnostics.

In all PHY modes, an OOF input from the internal or external framer can be

used to indicate that the received signal is not being received correctly. This input

inhibits cell validation functions and initiates cycle stuffing, when required.

1.3.4 Alarm Detection/Generation

All line alarm and error conditions including BIP codes are monitored and

reported in status registers and event counters. Alarms and errors can be

configured to generate an interrupt to the microprocessor. The CN8223 can

transmit alarm and error conditions under microprocessor control.

100046C

Conexant

1-7

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