XRT83SL34 datasheet(52/80 Pages) EXAR

Teilenummer	XRT83SL34

Bauteilbeschribung	QUAD T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR

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Hersteller	EXAR [Exar Corporation]

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XRT83SL34

QUAD T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR

REV. P1.0.8

PRELIMINARY

TXON_n

Transmitter ON: Writing a “1” into this bit location turns on the

Transmit Section of channel n. Writing a “0” shuts off the

Transmit Section of channel n. In this mode, TTIP_n and

TRING_n driver outputs will be tri-stated for power reduction or

redundancy applications.

NOTE: This bit provides independent turn-off or turn-on control

for each transmitter channel.

R/W

LOOP2_n

Loop-Back control bit 2: This bit together with the LOOP1

and LOOP0 bits control the Loop-Back modes of the chip

according to the following table:

LOOP1_n

Loop-Back control bit 1: See description of bit D2 for the

function of this bit.

R/W

LOOP0_n

Loop-Back control bit 0: See description of bit D2 for the

function of this bit.

R/W

TABLE 21: MICROPROCESSOR REGISTER #2, BIT DESCRIPTION

LOOP2

LOOP1

LOOP0

Loop-Back Mode

No Loop-Back

Dual Loop-Back

Analog Loop-Back

Remote Loop-Back

Digital Loop-Back

XRT83SL34 Datenblatt(PDF) 52 Page - Exar Corporation