XRT82L24A datasheet(6/39 Pages) EXAR

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XRT82L24A

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QUAD E1 LINE TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR

REV. 1.1.2

PIN DESCRIPTION

PIN DESCRIPTIONS

PIN #NAME

TYPE

DESCRIPTION

RECEIVER SECTIONS

RxCLK_0/RZData_0

RxCLK_1/RZData_1

RxCLK_2/RZData_2

RxCLK_3/RZData_3

Receiver_n Clock Output

Rzdata Output:

In Data Slicer Mode, (register 0, bit 7 = 1) or in Hardware Mode when MClk is

absent, this signal is OR-ed RZdata after the slicers.

RxLOS_0

RxLOS_1

RxLOS_2

RxLOS_3

Receiver_n Loss of Signal. This signal is asserted "High" to indicate loss of

signal at the receive input.

100

RxPOS_0/RData_0

RxPOS_1/RData_1

RxPOS_2/RData_2

RxPOS_3/RData_3

Receiver 1 Positive Data Output:

In dual-rail mode, this signal is the receive P-rail output data.

Receiver 1 NRZ Data Output:

In single-rail mode, this signal is the receive output data.

RxNEG_0/LCV_0

RxNEG_1/LCV_1

RxNEG_2/LCV_2

RxNEG_3/LCV_3

Receiver_n Negative Data Output:

In dual-rail mode, n-rail data are sent to the framer.

Line Code Violation Output - Channel_n:

In single-rail mode, this signal output "High" for one receive clock cycle to indi-

cate a code violation is detected in the received data. If AMI coding is selected,

every bipolar violation received will cause this pin to go "High".

RRing_0

RRing_1

RRing_2

RRing_3

Receiver_n Differential Negative Input.

RTIP_0

RTIP_1

RTIP_2

RTIP_3

Receiver_n Differential Positive Input.

RXMUTE

Hardware Mode, Receive Muting:

Connect this pin "High" to mute RxPOS/RxNEG output to a low state upon

receive LOS condition to prevent data chattering. Connect Low to disable mut-

ing function.

TRANSMITTER SECTIONS

TxNEG_0

TxNEG_1

TxNEG_2

TxNEG_3

Transmitter_n Negative NRZ Data Input. In dual-rail mode, this signal is the n-

rail input data for transmitter 0. In single-rail mode, this pin can be left uncon-

nected.

TxPOS_0/TData_0

TxPOS_1/TData_1

TxPOS_2/TData_2

TxPOS_3/TData_3

Transmitter_n Positive Data Input. In dual-rail mode, this signal is the p-rail

input data for transmitter 0.

Transmitter 0 Data Input. In single-rail mode, this pin is used as the NRZ input

data for transmitter 0.

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