BT8376EPF datasheet(105/323 Pages) CONEXANT

Part #	BT8376EPF

Description	single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces

PDF	323 Pages

Scroll/Zoom	100%

Manufacturer	CONEXANT [Synaptics Incorporated.]

Direct Link	https://www.synaptics.com/

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105 / 323 page

Bt8370/8375/8376

2.0 Circuit Description

Fully Integrated T1/E1 Framer and Line Interface

2.9 Transmit Line Interface Unit

N8370DSE

Conexant

2-77

2.9.2.2 Output Jitter

The maximum output jitter generated on XTIP/XRING dependents on the

transmit clock source selected. Refer to CLAD and JAT descriptions.

2.9.3 Line Build Out

In the Bt8370 long haul device, three LBO filter networks can be enabled in the

TLIU to attenuate XTIP/XRING outputs in 7.5 dB steps, per the signal transfer

function defined by FCC Part 68 Regulations. (See LBO[1:0] in TLIU_CR.) The

number of LBO filters selected is based on the attached cable length. For short

line lengths, larger LBO attenuation prevents far-end crosstalk. For longer line

lengths, the appropriate line build-out must be selected. The following equation

lists the transfer function for each of the 7.5 dB LBO filters:

where:

out

----------

1Sn0

1Sd0

---------------------------------------------------------

1.6049

7.9861

–

9.2404

–

2.1612

1.7223

4.575

–

3.8307

–

Sj2

πf

frequency Hz

()

BT8376EPF Datasheet(PDF) 105 Page - Synaptics Incorporated.