PEB2256HT datasheet(229/490 Pages) INFINEON

229 / 490 page

FALC56 V1.2

PEB 2256

E1 Registers

Data Sheet

229

2002-08-27

0 =

The AIS alarm is detected according to ETS300233.

Detection: An AIS alarm is detected if the incoming data stream

contains less than 3 zeros within a period of 512 bits and a loss

of frame alignment is indicated.

Recovery: The alarm is cleared if 3 or more zeros within 512

bits are detected or the FAS word is found.

1 =

The AIS alarm is detected according to ITU-T G.775

Detection: An AIS alarm is detected if the incoming data stream

contains less than 3 zeros in each doubleframe period of two

consecutive doubleframe periods (1024 bits).

Recovery: The alarm is cleared if 3 or more zeros are detected

within two consecutive doubleframe periods.

FRS

Force Resynchronization

A transition from low to high initiates a resynchronization procedure

of the pulse frame and the CRC-multiframe (if enabled by bit

FMR2.RFS1) starting directly after the old framing candidate.

SIM

Alarm Simulation

0 =

Normal operation.

1 =

Initiates internal error simulation of AIS, loss-of-signal, loss of

synchronization, remote alarm, slip, framing errors, CRC

errors, and code violations. The error counters FEC, CVC,

CEC1 are incremented.

SIM has to be held stable at high or low level for at least one receive

clock period before changing it again.

PEB2256HT Datasheet(PDF) 229 Page - Infineon Technologies AG