PEB2256HT datasheet(187/490 Pages) INFINEON

Part #	PEB2256HT

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

PDF	490 Pages

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Manufacturer	INFINEON [Infineon Technologies AG]

Direct Link	http://www.infineon.com

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187 / 490 page

FALC56 V1.2

PEB 2256

Functional Description T1/J1

Data Sheet

187

2002-08-27

5.7

J1-Feature Overview

The Japanese J1 standard is very similar to the T1 standard, but differs in some details.

To support these differences easily, the following features are provided within the

FALC56:

• CRC6 generation and checking according to ITU-JT G.706

(CRC checksum calculation includes FS/DL-bits, see Chapter 5.2.6.3 on page 146)

• Remote alarm handling according to ITU-JT G.704

(remote alarm pattern in DL-channel is "1111111111111111", see Chapter 5.2.6.2 on

page 146)

• NTT synchronization requirements in ESF framing mode

• Pulse shaping according to JT G.704

• Receive input thresholds according to ITU-JT G.703

J1 mode is globally selected by setting RC0.SJR = 1 (see page 357). For specific J1

framer initialization see Table 55 on page 199.

No special pulse mask setting is required, the described T1-settings also fulfill the J1

requirements.

PEB2256HT Datasheet(PDF) 187 Page - Infineon Technologies AG