XRT94L31 datasheet(9/133 Pages) EXAR

9 / 133 page

XRT94L31

REV. 1.0.1

3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC

TXLDATO_P

LVPEC

Transmit STS-3/STM-1 Data - Positive Polarity LVPECL Output:

This output pin, along with TXLDATO_N functions as the Transmit Data

Output (from the Transmit STS-3/STM-1 PECL Interface block), to the

Optical Transceiver (for transmission to remote terminal equipment) or to

the system back-plane (for transmission to some other System-Board).

For High-Speed Back-Plane Applications, data is output from these out-

put pins upon the rising/falling edge of TXLCLKO_P/TXLCLKO_N.

NOTE: For APS (Automatic Protection Switching) purposes, this output

pin, along with TXLDATO_N functions as the Primary Transmit

STS-3/STM-1 Data Output Port.

TXLDATO_N

LVPEC

Transmit STS-3/STM-1 Data - Negative Polarity LVPECL Output:

This output pin, along with TXLDATO_P functions as the Transmit Data

Output (from the Transmit STS-3/STM-1 PECL Interface block), to the

Optical Transceiver (for transmission to remote terminal equipment) or to

the system back-plane (for transmission to some other System board).

For High-Speed Back-Plane Applications, data is output from these out-

put pins upon the rising/falling edge of TXLCLKO_P/TXLCLKO_N.

NOTE: For APS (Automatic Protection Switching) purposes, this output

pin, along with TXLDATO_P functions as the Primary Transmit

STS-3/STM-1 Data Output Port.

TXLDATO_R_P

LVPEC

Transmit STS-3/STM-1 Data - Positive Polarity LVPECL Output -

Redundant Port:

This output pin, along with TXLDATO_R_N functions as the Transmit

Data Output (from the Transmit STS-3/STM-1 PECL Interface block), to

the Optical Transceiver or to the system back-plane.

For High-Speed Back-Plane Applications, data is output from these out-

put pins upon the rising/falling edge of TXLCLKO_R_P/

TXLCLKO_R_N).

NOTE: For APS (Automatic Protection Switching) purposes, this output

pin, along with TXLDATO_N functions as the Redundant

Transmit STS-3/STM-4 Data Output Port.

TXLDATO_R_N

LVPEC

Transmit STS-3/STM-1 Data - Negative Polarity LVPECL Output -

Redundant Port:

This output pin, along with TXLDATO_R_P functions as the Transmit

Data Output (from the Transmit STS-3/STM-1 PECL Interface block), to

the Optical Transceiver (for transmission to remote terminal equipment)

or to the system back-plane (for transmission to some other System

board).

For High-Speed Back-Plane Applications, data is output from these out-

put pins upon the rising/falling edge of TXLCLKO_R_P/

TXLCLKO_R_N).Note:

NOTE: For APS (Automatic Protection Switching) purposes, this output

pin, along with TXLDATO_R_P functions as the Redundant

Transmit STS-3/STM-1 Data Output Port.

PIN DESCRIPTION OF THE XRT94L31 (REV. B)

PIN #

SIGNAL NAME

I/O

TYPE

DESCRIPTION

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