PEB2256HT datasheet(368/490 Pages) INFINEON

Part #	PEB2256HT

Description	E1/T1/J1 Framer and Line Interface Component for Long and Short Haul Applications

PDF	490 Pages

Scroll/Zoom	100%

Manufacturer	INFINEON [Infineon Technologies AG]

Direct Link	http://www.infineon.com

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368 / 490 page

FALC56 V1.2

PEB 2256

T1/J1 Registers

Data Sheet

368

2002-08-27

Pulse Count Recovery (Read/Write)

Value after reset: 00

PCR(7:0)

Pulse Count Recovery

A LOS alarm (red alarm) is cleared if a pulse-density is detected in the

received bit stream. The number of pulses M which must occur in the

predefined PCD time interval is programmable by the PCR register

and can be calculated as follows:

M = N+1; with 0

≤ N ≤ 255.

The time interval starts with the first detected pulse transition. With

every received pulse a counter is incremented and the actual counter

is compared to the contents of PCR register. If the pulse number

reaches or exceeds the PCR value the LOS alarm is reset otherwise

the alarm stays active. In this case the next detected pulse transition

starts a new time interval.

An additional loss-of-signal recovery condition is selected by register

LIM2.LOS1.

PCR

PCR7

PCR0

(39)

PEB2256HT Datasheet(PDF) 368 Page - Infineon Technologies AG