XRT83L34IV (Exar) PDF资料下载 Datasheet(46/99 页)

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参数资料

型号：	XRT83L34IV
厂商：	Exar Corporation
文件页数：	46/99页
文件大小：	0K
描述：	IC LIU T1/E1/J1 QUAD 128TQFP
标准包装：	72
类型：	线路接口装置（LIU）
驱动器/接收器数：	4/4
规程：	T1，E1，J1
电源电压：	3.135 V ~ 3.465 V
安装类型：	表面贴装
封装/外壳：	128-LQFP
供应商设备封装：	128-TQFP（14x20）
包装：	托盘

XRT83L34

REV. 1.0.1

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

REMOTE LOOP-BACK (RLOOP)

With Remote Loop-Back activated, receive data after the jitter attenuator (if selected in the receive path) is

looped back to the transmit path using RCLK as transmit timing. In this mode transmit clock and data are

ignored, while RCLK and receive data will continue to be available at their respective output pins. Remote

Loop-Back with jitter attenuator selected in the receive path is shown in Figure 21.

In the Remote Loop-Back mode if the jitter attenuator is selected in the transmit path, the receive data from the

Clock and Data Recovery block is looped back to the transmit path and is applied to the jitter attenuator using

RCLK as transmit timing. In this mode the transmit clock and data are also ignored, while RCLK and received

data will continue to be available at their respective output pins. Remote Loop-Back with the jitter attenuator

selected in the transmit path is shown in Figure 22.

FIGURE 21. REMOTE LOOP-BACK MODE WITH JITTER ATTENUATOR SELECTED IN RECEIVE PATH

FIGURE 22. REMOTE LOOP-BACK MODE WITH JITTER ATTENUATOR SELECTED IN TRANSMIT PATH

Decoder

Timing

Control

Data &

Clock

Recovery

TPOS

TNEG

TCLK

RCLK

RPOS

RNEG

Encoder

TTIP

TRING

RTIP

RRING

Decoder

Timing

Control

Clock &

Data