XRT75VL00D datasheet(16/92 Pages) EXAR

16 / 92 page

XRT75VL00D

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

REV. 1.0.3

LLB

Local Loop-back

This input pin along with RLB configures different Loop-Back modes.

NOTE:

This input pin is ignored and may be connected to GND if the

XRT75VL00D is operating in the HOST Mode.

RLB

Remote Loop-back

This input pin along with LLB configures different Loop-Back modes.

NOTE:

This input pin is ignored and should be connected to GND if the

XRT75VL00D is operating in the HOST Mode.

MICROPROCESSOR SERIAL INTERFACE - (HOST MODE)

PIN #SIGNAL NAME

TYPE

DESCRIPTION

CS/RxClkINV

Microprocessor Serial Interface - Chip Select

Tie this “Low” to enable the communication with Serial Microprocessor Inter-

face.

NOTE: If the XRT75VL00D is configured in Hardware Mode,this pin functions as

RxClkINV.

SCLK/TxClkINV

Serial Interface Clock Input

The data on the SDI pin is sampled on the rising edge of this signal. Addition-

ally, during Read operations the Microprocessor Serial Interface updates the

SDO output on the falling edge of this signal.

NOTE: If the XRT75VL00D is configured in Hardware Mode, this pin functions

as TxClkINV.

SDI/RxON

Serial Data Input:

Data is serially input through this pin.

The input data is sampled on the rising edge of the SCLK pin (pin 26).

NOTES:

This pin is internally pulled down

If the XRT75VL00D is configured in Hardware Mode, this pin functions

as RxON.

SDO/RxMON

Serial Data Output:

This pin serially outputs the contents of the specified Command Register during

Read Operations. The data is updated on the falling edge of the SCLK and this

pin is tri-stated upon completion of data transfer.

NOTE:

If the XRT75VL00D is configured in Hardware Mode, this pin functions

as RxMON.

CONTROL AND ALARM INTERFACE

RLB

Loopback Mode

Normal Operation

Analog Local

LLB

Remote

Digital

XRT75VL00D датащи(PDF) 16 Page - Exar Corporation

XRT75VL00D датащи(HTML) 16 Page - Exar Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92

датащи скачать

ссылки URL