BT8376EPF datasheet(74/323 Pages) CONEXANT

Part #	BT8376EPF

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

PDF	323 Pages

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Manufacturer	CONEXANT [Synaptics Incorporated.]

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

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74 / 323 page

2.0 Circuit Description

Bt8370/8375/8376

2.7 Transmit System Bus

Fully Integrated T1/E1 Framer and Line Interface

2-46

Conexant

N8370DSE

2.7 Transmit System Bus

The Transmit System Bus (TSB) consists of a timebase, slip buffer, signaling

buffer, and transmit framer (Figure 2-23). It provides a high-speed serial interface

between the XMTR and system bus. The system bus is compatible with the Mitel

ST-Bus, the PEB Bus, and the AT&T CHI Bus. TSB directly interfaces to other

Conexant devices with no need for external circuitry.

The TSB contains the following six pins: Transmit System Bus Clock

(TSBCKI), Transmit PCM Data (TPCMI), Transmit Signaling Data (TSIGI),

Transmit Frame Sync (TFSYNC), Transmit Multiframe Sync (TMSYNC), and

Transmit time slot Indicator (TINDO). See Figure 2-24 for the relationship

between these signals. These pins are further defined in Table 1-1, Hardware

Signal Definitions.

Figure 2-23. TSB Interface Block Diagram

TSIG

Local

TSIG

Buffer

TSIGI

TPCMI

TSLIP

Buffer

TINDO

TFSYNC

TMSYNC

Transmit

Framer

TSB

Timebase

TPHASE

Local

Channel

Loopback

Remote

Channel

Loopback

From

Transmitter

TNRZ

CLADO

CLADI

RSBCKI

TSBCKI

TXDATA

From CLADO Prior to

Output Buffer

I/O from Pins

BT8376EPF Datasheet(PDF) 74 Page - Synaptics Incorporated.

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