PEB2256HT datasheet(294/490 Pages) INFINEON

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FALC56 V1.2

PEB 2256

E1 Registers

Data Sheet

294

2002-08-27

Framer Receive Status Register 1 (Read)

EXZD

Excessive Zeros Detected

Significant only, if excessive zero detection has been enabled

(FMR0.EXZE = 1). Set after detection of more than 3 (HDB3 code) or

15 (AMI code) contiguous zeros in the received data stream.

This bit is cleared on read.

TS16RA

Receive Time Slot 16 Remote Alarm

This bit contains the actual information of the received remote alarm

bit RS1.2 in time slot 16. Setting and resetting of this bit causes an

interrupt status change ISR3.RA16.

TS16LOS

Receive Time Slot 16 Loss-of-Signal

This bit is set if the incoming TS16 data stream contains always zeros

for at least 16 contiguously received time slots. A one in a time slot 16

resets this bit.

TS16AIS

Receive Time Slot 16 Alarm Indication Signal

The detection of the alarm indication signal in time slot 16 is according

to ITU-T G.775.

This bit is set if the incoming TS16 contains less than 4 zeros in each

of two consecutive TS16 multiframe periods. This bit is cleared if two

consecutive received CAS multiframe periods contains more than 3

zeros or the multiframe pattern was found in each of them. This bit is

cleared if TS0 synchronization is lost.

TS16LFA

Receive Time Slot 16 Loss of Multiframe Alignment

0 =

The CAS controller is in synchronous state after frame

alignment is accomplished.

1 =

This bit is set if the framing pattern "0000" in 2 consecutive CAS

multiframes were not found or in all TS16 of the preceding

multiframe all bits were reset. An interrupt ISR3.LMFA16 is

generated.

FRS1

EXZD

TS16RA TS16LOS TS16AIS TS16LFA

XLS

XLO

(4D)

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