XRT75L03DIV View Datasheet(PDF) - Exar Corporation

Part Name

Description

Manufacturer

XRT75L03DIV

THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER

Exar Corporation 

XRT75L03D

áç

REV. 1.0.0 THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER

When the XRT75L03D is configured in Host mode, the following input pins,TxLEV_n, TAOS_n, RLB_n, LLB_n,

E3_n, STS-1/DS3_n, REQEN_n, JATx/Rx, JA0 and JA1 are disabled and must be connected to ground.

The Table 14 below illustrates the functions of the shared pins in either Host mode or in Hardware mode.

PIN NUMBER

66

67

68

69

71

TABLE 14: FUNCTIONS OF SHARED PINS

IN HOST MODE

CS

SClk

SDI

SDO

INT

IN HARDWARE MODE

RxClkINV

TxClkINV

RxON

RxMON

LOSMUT

NOTE: While configured in Host mode, the TxON_n input pins will be active if the TxON_n bits in the control register are set

to “1”, and can be used to turn on and off the transmit output drivers. This permits a system designed for

redundancy to quickly switch out a defective line card and switch-in the backup line card.

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